Author: "Alessandra Lamastra" / Topic: magic (telescope) - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Alessandra Lamastra"' showing total 28 results

Start Over Author "Alessandra Lamastra" Topic magic (telescope)

28 results on '"Alessandra Lamastra"'

1. Searching for VHE gamma-ray emission associated with IceCube neutrino alerts using FACT, H.E.S.S., MAGIC, and VERITAS

Author: Konstancja, Satalecka, Acciari, Victor A., Stefano, Ansoldi, Lucio Angelo Antonelli, Axel Arbet Engels, Manuel, Artero, Katsuaki, Asano, Dominik, Baack, Ana, Babic, Andr('(e))s, Baquero, Ulisses Barres de Almeida, Juan Abel Barrio, Ivana, Batkovi('(c)), Josefa Becerra Gonzalez, Wlodek, Bednarek, Lorenzo, Bellizzi, Elisa, Bernardini, Maria-Isabel, Bernardos, Alessio, Berti, Jürgen, Besenrieder, Wrijupan, Bhattacharyya, Ciro, Bigongiari, Adrian, Biland, Oscar, Blanch, Hendrik, Bökenkamp, Giacomo, Bonnoli, Zeljka, Bosnjak, Giovanni, Busetto, Roberto, Carosi, Giovanni, Ceribella, Matteo, Cerruti, Yating, Chai, Ashot, Chilingarian, Stefan, Cikota, Sidika Merve Colak, Eduardo, Colombo, Jose Luis Contreras, Juan, Cortina, Stefano, Covino, Giacomo D( extquotesingle)Amico, Valerio D( extquotesingle)Elia, Paolo Da Vela, Francesco, Dazzi, Alessandro De Angelis, Barbara De Lotto, Manuel, Delfino, Jordi, Delgado, Carlos Delgado Mendez, Davide, Depaoli, Federico Di Pierro, Leonardo Di Venere, Elia Do Souto Espi(~(n))eira, Dijana Dominis Prester, Alice, Donini, Daniela, Dorner, Michele, Doro, Dominik, Elsaesser, Vandad Fallah Ramazani, Alicia, Fattorini, Maria Victoria Fonseca, Lluis, Font, Christian, Fruck, Satoshi, Fukami, Yasushi, Fukazawa, Garc('(i))a L('(o))pez, Ramon J., Markus, Garczarczyk, Sargis, Gasparyan, Markus, Gaug, Giglietto, Nicola, Francesco, Giordano, Pawel, Gliwny, Nikola, Godinovic, David, Green, Jarred Gershon Green, Daniela, Hadasch, Alexander, Hahn, Lea, Heckmann, Javier, Herrera, John, Hoang, Dario, Hrupec, Moritz, Hütten, Tomohiro, Inada, Kazuma, Ishio, Yuki, Iwamura, Irene Jim('(e))nez Mart('(i))nez, Jenni, Jormanainen, L('(e))a, Jouvin, Marie, Karjalainen, Daniel, Kerszberg, Yukiho, Kobayashi, Hidetoshi, Kubo, Junko, Kushida, Alessandra, Lamastra, Damir, Lelas, Francesco, Leone, Elina, Lindfors, Lena, Linhoff, Saverio, Lombardi, Francesco, Longo, Ruben, Lopez-Coto, Marcos, L('(o))pez-Moya, Alicia, L('(o))pez-Oramas, Loporchio, Serena, Bernardo Machado de Oliveira Fraga, Camilla, Maggio, Pratik, Majumdar, Martin, Makariev, Manuela, Mallamaci, Galina, Maneva, Marina, Manganaro, Karl, Mannheim, Laura, Maraschi, Mos(`(e)), Mariotti, Manel, Martinez, Daniel, Mazin, Stefano, Menchiari, Simone, Mender, Sa( (s))a Mi('(c))anovi('(c)), Davide, Miceli, Tjark, Miener, Jose Miguel Miranda, Razmik, Mirzoyan, Edgar, Molina, Abelardo, Moralejo, Daniel, Morcuende, Victoria, Moreno, Elena, Moretti, Takeshi, Nakamori, Lara, Nava, Vitaly, Neustroev, Cosimo, Nigro, Kari, Nilsson, Kyoshi, Nishijima, Koji, Noda, Seiya, Nozaki, Yoshiki, Ohtani, Tomohiko, Oka, Jorge, Otero-Santos, Simona, Paiano, Michele, Palatiello, David, Paneque, Riccardo, Paoletti, Paredes, Josep M., Lovro, Pavleti('(c)), Pablo, Pe(~(n))il, Massimo, Persic, Marine, Pihet, Pier Giorgio Prada Moroni, Elisa, Prandini, Chaitanya, Priyadarshi, Ivica, Puljak, Wolfgang, Rhode, Marc, Rib('(o)), Javier, Rico, Chiara, Righi, Andrea, Rugliancich, Narek, Sahakyan, Takayuki, Saito, Shunsuke, Sakurai, Francesco Gabriele Saturni, Bernd, Schleicher, Kevin, Schmidt, Thomas, Schweizer, Julian, Sitarek, Iva, ( (S))nidari('(c)), Dorota, Sobczy('(n))ska, Alessia, Spolon, Antonio, Stamerra, Jelena Stri( (s))kovi('(c)), Derek, Strom, Marcel, Strzys, Yusuke, Suda, Tihomir, Suri('(c)), Mitsunari, Takahashi, Ryuji, Takeishi, Fabrizio, Tavecchio, Petar, Temnikov, Tomislav, Terzic, Masahiro, Teshima, Luca, Tosti, Stefano, Truzzi, Antonio, Tutone, Santiago, Ubach, Juliane van Scherpenberg, Gaia, Vanzo, Monica VAZQUEZ ACOSTA, Sofia, Ventura, Vassil, Verguilov, Carlo Francesco Vigorito, Vincenzo, Vitale, Ievgen, Vovk, Martin, Will, Carolin, Wunderlich, Tokonatsu, Yamamoto, Darko, Zari('(c)), Matteo, Balbo, Thomas, Bretz, Jens, Buss, Laura, Eisenberger, Dorothee, Hildebrand, Roman, Iotov, Adelina, Kalenski, Dominik, Neise, Maximilian, Noethe, Aleksander, Paravac, Vitalii, Sliusar, Roland, Walter, Rasha, Abbasi, Markus, Ackermann, Jenni, Adams, Juanan, Aguilar, Ahlers, M., Maryon, Ahrens, Cyril Martin Alispach, Antonio Augusto Alves Junior, Najia Moureen Binte Amin, Rui, An, Karen, Andeen, Tyler, Anderson, Gisela, Anton, Carlos, Arguelles, Yosuke, Ashida, Spencer, Axani, Xinhua, Bai, Aswathi Balagopal, V., Anastasia Maria Barbano, Barwick, S. W., Benjamin, Bastian, Vedant, Basu, Sebastian, Baur, Bay, R. C., Beatty, J. J., Becker, K. -H., Julia Becker Tjus, Chiara, Bellenghi, Segev, Benzvi, Berley, D., Besson, D. Z., Gary, Binder, Daniel, Bindig, Blaufuss, E., Summer, Blot, Matthias, Boddenberg, Federico, Bontempo, Jurgen, Borowka, Boser, S., Olga, Botner, Jakob, Bottcher, Etienne, Bourbeau, Federica, Bradascio, Braun, J., Stephanie, Bron, Jannes, Brostean-Kaiser, Sally-Ann, Browne, Alexander, Burgman, Ryan, Burley, Raffaela, Busse, Michael, Campana, Erin, Carnie-Bronca, Chujie, Chen, Dmitry, Chirkin, Koun, Choi, Bryanlee, Clark, Kenneth, Clark, Lew, Classen, Alan, Coleman, Gabriel, Collin, Conrad, J. M., Paul, Coppin, Pablo, Correa, Cowen, D. F., Cross, R., Christian, Dappen, Pranav, Dave, Catherine DE CLERCQ, James, Delaunay, Hans, Dembinski, Kunal, Deoskar, Sam De Ridder, Abhishek, Desai, Paolo, Desiati, Krijn de Vries, Gwenhaël de Wasseige, Meike De With, Tyce, Deyoung, Sukeerthi, Dharani, Alejandro, Diaz, Juan Carlos Diaz-Velez, Markus, Dittmer, Hrvoje, Dujmovic, Matt, Dunkman, Michael, Duvernois, Emily, Dvorak, Thomas, Ehrhardt, Philipp, Eller, Ralph, Engel, Hannah, Erpenbeck, John, Evans, Evenson, P. A., Kwok Lung Fan, Fazely, A. R., Sebastian, Fiedlschuster, Aaron, Fienberg, Kirill, Filimonov, Chad, Finley, Leander, Fischer, Derek, B Fox, Anna, Franckowiak, Elizabeth, Friedman, Alexander, Fritz, Philipp, Furst, Gaisser, T. K., Jay, Gallagher, Erik, Ganster, Alfonso, Garcia, Simone, Garrappa, Gerhardt, L., Ava, Ghadimi, Christian, Glaser, Theo, Glauch, Thorsten, Glusenkamp, Goldschmidt, A., Javier, Gonzalez, Sreetama, Goswami, Darren, Grant, Timoth('(e))e, Gr('(e))goire, Spencer, Griswold, Mehmet, Gunduz, Christoph, Günther, Christian, Haack, Allan, Hallgren, Halliday, R., Halve, L., Halzen, F., Martin Ha Minh, Kael, Hanson, John, Hardin, Harnisch, Alexander A., Andreas, Haungs, Simon, Hauser, Dustin, Hebecker, Helbing, K., Felix, Henningsen, Hettinger, Emma C., Stephanie, Hickford, Joshua, Hignight, Colton, Hill, Hill, G. C., Kara, Hoffman, Ruth, Hoffmann, Tobias, Hoinka, Benjamin, Hokanson-Fasig, Hoshina, K., Feifei, Huang, Matthias, Huber, Thomas, Huber, Klas, Hultqvist, Mirco, Hunnefeld, Raamis, Hussain, Seongjin, In, Nad(`(e))ge, Iovine, Aya, Ishihara, Matti, Jansson, George, Japaridze, Minjin, Jeong, Ben, Jones, Donghwa, Kang, Woosik, Kang, Xinyue, Kang, Alexander, Kappes, David, Kappesser, Timo, Karg, Martina, Karl, Karle, A., Katz, U., Kauer, M., Moritz, Kellermann, Kelley, J. L., Ali, Kheirandish, Ken( extquotesingle)ichi Kin, Thomas, Kintscher, Joanna, Kiryluk, Spencer, Klein, Ramesh, Koirala, Hermann, Kolanoski, Tomas, Kontrimas, Lutz, Kopke, Claudio, Kopper, Sandro, Kopper, Koskinen, D. J., Paras, Koundal, Michael, Kovacevich, Marek, Kowalski, Tetiana, Kozynets, Emma, Kun, Naoko, Kurahashi, Neha, Lad, Cristina Lagunas Gualda, Justin, Lanfranchi, Michael, J Larson, Frederik Hermann Lauber, Jeffrey, Lazar, Jiwoong, Lee, Kayla, Leonard, Agnieszka, Leszczy('(n))ska, Yijia, Li, Massimiliano, Lincetto, Qinrui, Liu, Maria, Liubarska, Elisa, Lohfink, Cristian Jesus Lozano Mariscal, Lu, Lu, Francesco, Lucarelli, Andrew, Ludwig, William, Luszczak, Yang, Lyu, Wing Yan Ma, James, Madsen, Kendall, Mahn, Yuya, Makino, Sarah, Mancina, Ioana Codrina Maris, Maruyama, Reina H., Mase, K., Thomas, Mcelroy, Frank, Mcnally, James Vincent Mead, Meagher, K., Andres, Medina, Maximilian, Meier, Stephan, Meighen-Berger, Jessie, Micallef, Daniela, Mockler, Teresa, Montaruli, Roger, Moore, Morse, R., Marjon, Moulai, Richard, Naab, Ryo, Nagai, Uwe, Naumann, Jannis, Necker, Le Viet Nguyen, Hans, Niederhausen, Mehr, Nisa, Sarah, Nowicki, Dave, Nygren, Anna Obertacke Pollmann, Marie, Oehler, Olivas, A., Erin O( extquotesingle)Sullivan, Hershal, Pandya, Daria, Pankova, Nahee, Park, Grant, Parker, Ek Narayan Paudel, Larissa, Paul, Carlos Perez de los Heros, Lilly, Peters, Saskia, Philippen, Damian, Pieloth, Sarah, Pieper, Martin, Pittermann, Pizzuto, A., Plum, M., Yuiry, Popovych, Alessio, Porcelli, Maria Prado Rodriguez, Buford Price, P., Brandom, Pries, Gerald, Przybylski, Christoph, Raab, Amirreza, Raissi, Mohamed, Rameez, Rawlins, K., Immacolata Carmen Rea, Abdul, Rehman, Ren('(e)), Reimann, Giovanni, Renzi, Elisa, Resconi, Simeon, Reusch, Mike, Richman, Benedikt, Riedel, Ella, Roberts, Sally, Robertson, Gerrit, Roellinghoff, Martin, Rongen, Carsten, Rott, Tim, Ruhe, Dirk, Ryckbosch, Devyn Rysewyk Cantu, Ibrahim, Safa, Julian, Saffer, Sebastian Sanchez Herrera, Alexander, Sandrock, Joakim, Sandroos, Marcos, Santander, Subir, Sarkar, Sourav, Sarkar, Maximilian Karl Scharf, Merlin, Schaufel, Harald, Schieler, Sebastian, Schindler, Schlunder, P., Torsten, Schmidt, Austin, Schneider, Judith, Schneider, Schröder, Frank G., Lisa Johanna Schumacher, Georg, Schwefer, Steve, Sclafani, Seckel, D., Surujhdeo, Seunarine, Ankur, Sharma, Shefali, Shefali, Manuel, Silva, Barbara, Skrzypek, Ben, Smithers, Robert, Snihur, Jan, Soedingrekso, Dennis, Soldin, Christian, Spannfellner, Glenn, Spiczak, Christian, Spiering, Juliana, Stachurska, Michael, Stamatikos, Stanev, T., Robert, Stein, Joeran, Stettner, Steuer, A., Stezelberger, T., Timo, Sturwald, Thomas, Stuttard, Sullivan, G. W., Taboada, I., Frederik, Tenholt, Samvel, Ter-Antonyan, Tilav, S., Franziska, Tischbein, Kirsten, Tollefson, Christoph, Tönnis, Simona, Toscano, Delia, Tosi, Alexander, Trettin, Maria, Tselengidou, Chunfai, Tung, Andrea, Turcati, Roxanne, Turcotte, Colin, Turley, Jean Pierre Twagirayezu, Bunheng, Ty, Martin Unland Elorrieta, Nora, Valtonen-Mattila, Justin, Vandenbroucke, Nick van Eijndhoven, David, Vannerom, Jakob van Santen, Stef, Verpoest, Matthias, Vraeghe, Walck, C., Timothyblake, Watson, Chris, Weaver, Philip, Weigel, Andreas, Weindl, Matthew, Weiss, Jan, Weldert, Chris, Wendt, Johannes, Werthebach, Mark, Weyrauch, Nathan, Whitehorn, Wiebusch, C. H., Dawn, Williams, Martin, Wolf, Kurt, Woschnagg, Gerrit, Wrede, Johan, Wulff, Xianwu, Xu, Yiqian, Xu, Juan Pablo Yanez, Yoshida, S., Shiqi, Yu, Tianlu, Yuan, Zelong, Zhang, Weidong, Jin, Hassan, Abdalla, Felix, Aharonian, Faical, Ait-Benkhali, Oguzhan, Anguener, Cornelia, Arcaro, Celine, Armand, Tom, Armstrong, Halim, Ashkar, Michael, Backes, Vardan, Baghmanyan, Victor Barbosa Martins, Anna, Barnacka, Monica, Barnard, Rowan, Batzofin, Yvonne, Becherini, David, Berge, Konrad, Bernlöhr, Baiyang, Bi, Markus, Boettcher, Catherine, Boisson, Julien, Bolmont, Mathieu de Bony, Mischa, Breuhaus, Robert, Brose, Francois, Brun, Tomasz, Bulik, Thomas, Bylund, Floriane, Cangemi, Sami, Caroff, Sabrina, Casanova, Jaqueline, Catalano, Pauline, Chambery, Tej Bahadur Chand, Andrew, Chen, Garret, Cotter, Malgorzata, Curlo, Jean Damascene Mbarubucyeye, Isak Delberth Davids, James, Davies, Justine, Devin, Arache, Djannati-Ataï, Anton, Dmytriiev, Axel, Donath, Victor, Doroshenko, Lente, Dreyer, Louis Du Plessis, Connor, Duffy, Kathrin, Egberts, Sabrina, Einecke, Gabriel, Emery, Jean-Pierre, Ernenwein, Steven, Fegan, Kirsty, Feijen, Armand, Fiasson, Gaëtan Fichet de Clairfontaine, Gerard, Fontaine, Lott, Frans, Matthias, Fuessling, Stefan, Funk, Stefano, Gabici, Yves, Gallant, Shahede, Ghafourizade, Gianluca, Giavitto, Luca, Giunti, Dorit, Glawion, Jean-Francois, Glicenstein, Marie-H('(e))l(`(e))ne, Grondin, Sumari, Hattingh, Maria, Haupt, German, Hermann, Jim, Hinton, Werner, Hofmann, Clemens, Hoischen, Tim, Holch, Markus, Holler, Dieter, Horns, Zhiqiu, Huang, David, Huber, Mario, Hörbe, Marek, Jamrozy, Felix, Jankowsky, Vikas, Joshi, Ira, Jung, Eli, Kasai, Krzysztof, Katarzynski, Ul(`(i)), Katz, Dmitry, Khangulyan, Bruno, Khelifi, Stefan, Klepser, Wlodek, Kluzniak, Nukri, Komin, Ruslan, Konno, Karl, Kosack, Dmitriy, Kostunin, Michael, Kreter, Ga( (s))per Kukec Mezek, Anu, Kundu, Giovanni, Lamanna, S('(e))bastien Le Stum, Anne, Lemiere, Marianne, Lemoine-Goumard, Jean-Philippe, Lenain, Fabian, Leuschner, Christelle, Levy, Thomas, Lohse, Anna, Luashvili, Iryna, Lypova, Jonathan, Mackey, Jhilik, Majumdar, Denys, Malyshev, Dmitry, Malyshev, Vincent, Marandon, Paolo, Marchegiani, Alexandre, Marcowith, Arnaud, Mares, Guillem Marti( extquotesingle)i-Devesa, Ramin, Marx, Gilles, Maurin, Pieter, Meintjes, Manuel, Meyer, Alison, Mitchell, Rafal, Moderski, Lars, Mohrmann, Alessandro, Montanari, Chris, Moore, Paul, Morris, Emmanuel, Moulin, Jacques, Muller, Thomas, Murach, Kaori, Nakashima, Mathieu Naurois (de), Amid, Nayerhoda, Hambeleleni, Ndiyavala, Jacek, Niemiec, Angel, Noel, Paul O( extquotesingle)Brien, Laenita Lorraine Oberholzer, Stefan, Ohm, Laura, Olivera-Nieto, Emma Ona-Wilhelmi (de), Michal, Ostrowski, Sebastian, Panny, Michael, Panter, Dan, Parsons, Giada, Peron, Santiago, Pita, Vincent, Poireau, Dmitry, Prokhorov, Heike, Prokoph, Gerd, Puehlhofer, Michael, Punch, Andreas, Quirrenbach, Patrick, Reichherzer, Anita, Reimer, Olaf, Reimer, Quentin, Remy, Matthieu, Renaud, Brian, Reville, Frank, Rieger, Carlo, Romoli, Gavin, Rowell, Bronislaw, Rudak, Hector Rueda Ricarte, Edna Ruiz Velasco, Vardan, Sahakian, Simon, Sailer, Heiko, Salzmann, David, Sanchez, Andrea, Santangelo, Manami, Sasaki, Johannes, Schaefer, Hester, Schutte, Ullrich, Schwanke, Fabian, Schüssler, Mohanraj, Senniappan, Albert, Seyffert, Shapopi, Jimmy N. S., Kleopas, Shiningayamwe, Rachel, Simoni, Atreyee, Sinha, Helene, Sol, Hugh, Spackman, Andreas, Specovius, Samuel Timothy Spencer, Marion, Spir-Jacob, Lukasz, Stawarz, Riaan, Steenkamp, Christian, Stegmann, Simon, Steinmassl, Constantin, Steppa, Lei, Sun, Tadayuki, Takahashi, Takaaki, Tanaka, Thomas, Tavernier, Andrew, Taylor, Regis, Terrier, Hannes, Thiersen, Charles, Thorpe-Morgan, Martin, Tluczykont, Lenka, Tomankova, Michelle, Tsirou, Naomi, Tsuji, Richard, Tuffs, Yasunobu, Uchiyama, Johann van der Walt, Christopher van Eldik, Carlo van Rensburg, Brian van Soelen, George, Vasileiadis, Johannes, Veh, Christo, Venter, Pascal, Vincent, Jacco, Vink, Völk, Heinrich J., Stefan, Wagner, Jason John Watson, Felix, Werner, Richard, White, Alicja, Wierzcholska, Yu Wun Wong, Hend, Yassin, Anke, Yusafzai, Michael, Zacharias, Roberta, Zanin, Davit, Zargaryan, Andrzej, Zdziarski, Andreas, Zech, Sylvia, Zhu, Andreas, Zmija, Samuel, Zouari, Natalia, Zywucka, The FACT Collaboration, The H.E.S.S. Collaboration, The IceCube Collaboration, The MAGIC Collaboration, The VERITAS Collaboration, and Współautorami artykułu są członkowie Magic Collaboration, IceCube Collaboration, FACT Collaboration, H.E.S.S. Collaboration, VERITAS Collaboration w liczbie 808
Subjects: Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Point source, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, IACT, Astrophysics, law.invention, High Energy Physics - Experiment, Telescope, High Energy Physics - Experiment (hep-ex), law, HESS - Abteilung Hinton, ddc:530, High Energy Physics::Experiment, MAGIC (telescope), Neutrino, Blazar, Astrophysics - High Energy Astrophysical Phenomena, Cherenkov radiation
Abstract: The realtime follow-up of neutrino events is a promising approach to search for astrophysical neutrino sources. It has so far provided compelling evidence for a neutrino point source: the flaring gamma-ray blazar TXS 0506+056 observed in coincidence with the high-energy neutrino IceCube-170922A detected by IceCube. The detection of very-high-energy gamma rays (VHE, $\mathrm{E} > 100\,\mathrm{GeV}$) from this source helped establish the coincidence and constrained the modeling of the blazar emission at the time of the IceCube event. The four major imaging atmospheric Cherenkov telescope arrays (IACTs) - FACT, H.E.S.S., MAGIC, and VERITAS - operate an active follow-up program of target-of-opportunity observations of neutrino alerts sent by IceCube. This program has two main components. One are the observations of known gamma-ray sources around which a cluster of candidate neutrino events has been identified by IceCube (Gamma-ray Follow-Up, GFU). Second one is the follow-up of single high-energy neutrino candidate events of potential astrophysical origin such as IceCube-170922A. GFU has been recently upgraded by IceCube in collaboration with the IACT groups. We present here recent results from the IACT follow-up programs of IceCube neutrino alerts and a description of the upgraded IceCube GFU system., Presented at the 37th International Cosmic Ray Conference (ICRC 2021). See arXiv:2107.06966 for all IceCube contributions. See arXiv:2108.05257 for all H.E.S.S. contributions
Published: 2022

2. MAGIC observations of HESS J1809-193 using the Very Large Zenith Angle technique at energies above TeV

Author: Wrijupan Bhattacharyya, Chiara Righi, Jordi Delgado, M. I. Martínez, Giacomo D'Amico, Chaitanya Priyadarshi, Manuel Artero, Francesco Longo, Katsuaki Asano, Andrés Baquero, Tomislav Terzić, Maria Victoria Fonseca, Kevin Schmidt, Yusuke Suda, Sidika Merve Colak, Carlo Vigorito, Daniel Kerszberg, Jarred Gershon Green, Davide Depaoli, Monica Vazquez Acosta, Nikola Godinovic, Elia Do Souto Espiñeira, Lena Linhoff, Pratik Majumdar, Leonardo Di Venere, Louis Antonelli, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Stefano Menchiari, Michele Palatiello, Paolo Da Vela, Junko Kushida, David H. Green, Lovro Pavletić, Vandad Fallah Ramazani, Francesco Dazzi, Javier Rico, Tokonatsu Yamamoto, Martin Makariev, Josep M. Paredes, Antonio Stamerra, Martin Will, Vitaly Neustroev, Oscar Blanch, Tihomir Surić, Carolin Wunderlich, John Hoang, Marc Ribó, Santiago Ubach, Iva Šnidarić, Lorenzo Bellizzi, Jorge Otero-Santos, Luca Tosti, Ciro Bigongiari, Markus Garczarczyk, Kazuma Ishio, Seiya Nozaki, Manuel Delfino, Ulisses Barres de Almeida, Marina Manganaro, Manuela Mallamaci, Valerio D'Elia, Satoshi Fukami, Hidetoshi Kubo, Tomohiro Inada, Victor A. Acciari, Yating Chai, Dario Hrupec, Stefan Cikota, Alessandro De Angelis, G. Maneva, Abelardo Moralejo, Elisa Prandini, Elena Moretti, Pawel Gliwny, Nicola Giglietto, Mitsunari Takahashi, Masahiro Teshima, Massimo Persic, Adrian Biland, Konstancja Satalecka, Moritz Hütten, Juan Abel Barrio, Michele Doro, Serena Loporchio, Victoria Moreno, Karl Mannheim, Darko Zarić, Narek Sahakyan, Stefano Truzzi, Lluis Font, Tomohiko Oka, Ashot Chilingarian, Maria-Isabel Bernardos, Alice Donini, Josefa González, Alicia López-Oramas, Bernd Schleicher, Roberto Carosi, Carlos Delgado Mendez, Pablo Peñil, Marcel Strzys, Edgar Molina, Tjark Miener, Giacomo Bonnoli, Kyoshi Nishijima, David Paneque, Davide Miceli, Ana Babić, Simona Paiano, Thomas Schweizer, Simone Mender, Javier Herrera, P. G. Prada Moroni, Alessia Spolon, Alicia Fattorini, Léa Jouvin, Cosimo Nigro, Stefano Ansoldi, Jelena Strišković, Sofia Ventura, Alexander Hahn, Riccardo Paoletti, Markus Gaug, Lara Nava, Saša Mićanović, Alessandra Lamastra, Takeshi Nakamori, Daniel Morcuende, Jose Luis Contreras, Vassil Verguilov, Fabrizio Tavecchio, Barbara De Lotto, Camilla Maggio, Daniela Dorner, Alessio Berti, Eduardo Colombo, Ivana Batković, Vincenzo Vitale, Gaia Vanzo, Axel Arbet Engels, Juan Cortina, Marine Pihet, Petar Temnikov, Koji Noda, Elisa Bernardini, D. Dominis Prester, Hendrik Bökenkamp, Francesco Leone, Jenni Jormanainen, Sargis Gasparyan, Ryuji Takeishi, D. M. Strom, Kari Nilsson, Wolfgang Rhode, Bernardo Machado de Oliveira Fraga, Giovanni Busetto, Marcos López-Moya, Wlodek Bednarek, Federico Di Pierro, Ruben Lopez-Coto, Irene Jiménez Martínez, Shunsuke Sakurai, Jose Miguel Miranda, Juliane van Scherpenberg, Matteo Cerruti, Yasushi Fukazawa, Ievgen Vovk, Mosè Mariotti, Ivica Puljak, Saverio Lombardi, Andrea Rugliancich, Ramon J. García López, Marie Karjalainen, Dominik Elsaesser, Razmik Mirzoyan, Damir Lelas, Lea Heckmann, Francesco Gabriele Saturni, Dorota Sobczyńska, Zeljka Bosnjak, L. Maraschi, Elina Lindfors, Daniel Mazin, Stefano Covino, Giovanni Ceribella, Takashi Saito, Dominik Baack, Yukiho Kobayashi, Christian Fruck, Yuki Iwamura, Julian Sitarek, Daniela Hadasch, and Yoshiki Ohtani
Subjects: Astroparticle physics, Physics, Supernova, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Cosmic ray, MAGIC (telescope), Astrophysics, Zenith
Abstract: The origin of Galactic Cosmic rays (GCRs), whose spectrum extends to PeV energies, is one of the longest-standing problems in astroparticle physics. One of the main sources of GCRs are regarded to be Supernova remnants (SNRs). While SNRs are known to accelerate protons, so far there is no evidence that SNRs can accelerate CRs to PeV energies. Providing that ~10% of the parent Cosmic ray energy is converted to gamma rays, the gamma-ray spectrum extending up to ~100 TeV would be a signature of a so-called Galactic PeVatron, an object responsible for the production of protons up to the knee of the Cosmic ray spectrum. The current multi-wavelength data indicate that HESS J1809-193 is one of the most promising Galactic PeVatron candidates. So far, no firm identification on the source nature has been established as there are several possible counterparts at lower energies; one of them being SNR G11.0−0.0. We report here the results of an observational campaign performed by the MAGIC telescopes on HESS J1809-193 since 2019 in the very-high-energy gamma-ray domain (E>100 GeV). The data were obtained with the Very Large Zenith Angle (VLZA) technique, which increased the collection area significantly to about one square kilometer. We used ~60 hours of collected VLZA data to explore the spectrum and the morphology of the source at energies above several TeV., PoS: Proceedings of Science, 395, ISSN:1824-8039, 37th International Cosmic Ray Conference (ICRC 2021)
Published: 2022
Full Text: View/download PDF

3. Recent MAGIC results on Galactic binaries

Author: Pablo Peñil, Saša Mićanović, Ivana Batković, Francesco Longo, Sargis Gasparyan, Wolfgang Rhode, Giovanni Busetto, Daniel Kerszberg, Shunsuke Sakurai, Marie Karjalainen, Tomohiko Oka, Mosè Mariotti, Kyoshi Nishijima, Tihomir Surić, Giacomo Bonnoli, Takeshi Nakamori, P. G. Prada Moroni, Matteo Cerruti, Elia Do Souto Espiñeira, Pratik Majumdar, Barbara De Lotto, Yuki Iwamura, Camilla Maggio, Daniela Dorner, Alexander Hahn, Lena Linhoff, Tjark Miener, L. Maraschi, Elina Lindfors, Gaia Vanzo, Dominik Elsaesser, Razmik Mirzoyan, David Paneque, John Hoang, Christian Fruck, Thomas Schweizer, Marc Ribó, Daniel Mazin, Damir Lelas, Jelena Strišković, Yasushi Fukazawa, Daniel Morcuende, Jose Luis Contreras, Dario Hrupec, Manuela Mallamaci, Martin Will, Saverio Lombardi, Manuel Artero, Andrea Rugliancich, Stefano Ansoldi, Jorge Otero-Santos, Petar Temnikov, Koji Noda, Karl Mannheim, Massimo Persic, Lea Heckmann, Francesco Gabriele Saturni, Riccardo Paoletti, Marine Pihet, Marina Manganaro, Elisa Bernardini, Alessandro De Angelis, Markus Gaug, Martin Makariev, Hidetoshi Kubo, Tomohiro Inada, Dorota Sobczyńska, Mitsunari Takahashi, Oscar Blanch, Juan Cortina, Vandad Fallah Ramazani, Alicia López-Oramas, Josep M. Paredes, Louis Antonelli, Antonio Stamerra, Elena Moretti, D. Dominis Prester, Lluis Font, Tomislav Terzić, Seiya Nozaki, Konstancja Satalecka, Michele Doro, Julian Sitarek, Juliane van Scherpenberg, Michele Palatiello, Stefano Covino, Ivica Puljak, Serena Loporchio, Jenni Jormanainen, Daniela Hadasch, Katsuaki Asano, Giacomo D'Amico, Davide Depaoli, Hendrik Bökenkamp, Alice Donini, Bernardo Machado de Oliveira Fraga, Yoshiki Ohtani, Jordi Delgado, Maria Victoria Fonseca, Iva Šnidarić, Ž. Bošnjak, Roberto Carosi, Nikola Godinovic, Lara Nava, Ramon J. García López, Kevin Schmidt, Alessio Berti, Abelardo Moralejo, Giovanni Ceribella, Francesco Dazzi, Fabrizio Tavecchio, Ievgen Vovk, Davide Miceli, Jarred Gershon Green, Takashi Saito, Adrian Biland, Alessia Spolon, Eduardo Colombo, Junko Kushida, Lovro Pavletić, Léa Jouvin, Juan Abel Barrio, Marcel Strzys, Dominik Baack, Axel Arbet Engels, Narek Sahakyan, Vassil Verguilov, Yukiho Kobayashi, Carlos Delgado Mendez, Carolin Wunderlich, Ryuji Takeishi, Bernd Schleicher, Edgar Molina, D. M. Strom, Kari Nilsson, Simone Mender, Javier Herrera, Leonardo Di Venere, Andrés Baquero, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Manuel Delfino, Ulisses Barres de Almeida, Ana Babić, Ciro Bigongiari, Yusuke Suda, Carlo Vigorito, Wrijupan Bhattacharyya, Javier Rico, Tokonatsu Yamamoto, Vitaly Neustroev, Luca Tosti, Valerio D'Elia, G. Maneva, Victor A. Acciari, Moritz Hütten, Paolo Da Vela, David H. Green, Marcos López-Moya, Wlodek Bednarek, Federico Di Pierro, Ruben Lopez-Coto, Irene Jiménez Martínez, Jose Miguel Miranda, Alessandra Lamastra, Vincenzo Vitale, Josefa González, M. I. Martínez, Maria-Isabel Bernardos, Simona Paiano, Alicia Fattorini, Sidika Merve Colak, Francesco Leone, Monica Vazquez Acosta, Yating Chai, Stefan Cikota, Pawel Gliwny, Nicola Giglietto, Victoria Moreno, Darko Zarić, Satoshi Fukami, Lorenzo Bellizzi, Masahiro Teshima, Cosimo Nigro, Sofia Ventura, Markus Garczarczyk, Kazuma Ishio, Santiago Ubach, Chiara Righi, Elisa Prandini, Chaitanya Priyadarshi, Ashot Chilingarian, Stefano Menchiari, and Stefano Truzzi
Subjects: Physics, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Binary number, MAGIC (telescope), Astrophysics, Compact star, Radiation
Abstract: X-ray and gamma-ray binaries are systems consisting of a compact object and normally a non-degenerate companion star. Most of these sources have been shown to emit radiation in a broad frequency range, from radio up to X-rays and sometimes gamma rays. We report on recent results in very high-energy gamma rays above 100 GeV obtained by the MAGIC Collaboration for the Galactic X-ray binaries MAXI J1820+070 and 1A 0535+262, and the gamma-ray binary HESS J0632+057. Multiwavelength data at lower energies are also provided for a better contextualisation of the sources.
Published: 2022

4. Multi-messenger characterization of Mrk501 during historically low X-ray and gamma-ray activity

Author: Lluis Font, Marcel Strzys, Simone Mender, Javier Herrera, Stefano Covino, Christian Fruck, Tjark Miener, David Paneque, Francesco Dazzi, Andrés Baquero, Vandad Fallah Ramazani, Yusuke Suda, Josep M. Paredes, Antonio Stamerra, Cosimo Nigro, Carlo Vigorito, Jelena Strišković, M. I. Martínez, Giacomo D'Amico, Marcos López-Moya, Wlodek Bednarek, Jarred Gershon Green, Sofia Ventura, Javier Rico, Tokonatsu Yamamoto, Dario Hrupec, Mitsunari Takahashi, Giovanni Ceribella, Federico Di Pierro, Ruben Lopez-Coto, John Hoang, Lorenzo Bellizzi, Wrijupan Bhattacharyya, Vitaly Neustroev, Luca Tosti, Jordi Delgado, Manuel Artero, Kevin Schmidt, Marie Karjalainen, Irene Jiménez Martínez, Jose Miguel Miranda, Tihomir Surić, Michele Palatiello, Chiara Righi, Valerio D'Elia, Yuki Iwamura, Francesco Longo, Ciro Bigongiari, Tomislav Terzić, Daniela Dorner, Yating Chai, Stefan Cikota, Massimo Persic, Pawel Gliwny, Nicola Giglietto, G. Maneva, Iva Šnidarić, Giacomo Bonnoli, Gaia Vanzo, Lena Linhoff, P. G. Prada Moroni, Louis Antonelli, L. Maraschi, Elina Lindfors, Junko Kushida, Lovro Pavletić, Elia Do Souto Espiñeira, Alessandra Lamastra, Vincenzo Vitale, Juliane van Scherpenberg, Chaitanya Priyadarshi, Ivica Puljak, Karl Mannheim, Victoria Moreno, Alicia López-Oramas, Thomas Schweizer, Adrian Biland, Davide Depaoli, Marina Manganaro, Carolin Wunderlich, Darko Zarić, Daniel Mazin, Abelardo Moralejo, Satoshi Fukami, Francesco Leone, Ramon J. García López, Stefano Ansoldi, Julian Sitarek, Riccardo Paoletti, Martin Makariev, Petar Temnikov, Oscar Blanch, Leonardo Di Venere, Koji Noda, Elisa Bernardini, Daniela Hadasch, Katsuaki Asano, Ievgen Vovk, Markus Gaug, Masahiro Teshima, Maria Victoria Fonseca, Alessio Berti, Elena Moretti, Maria-Isabel Bernardos, Stefano Menchiari, Markus Garczarczyk, Konstancja Satalecka, Manuela Mallamaci, Jürgen Besenrieder, Dominik Elsaesser, Francesco Giordano, Antonio Tutone, Yoshiki Ohtani, Victor A. Acciari, Alessandro De Angelis, Bernd Schleicher, Edgar Molina, Paolo Da Vela, Razmik Mirzoyan, Josefa González, Michele Doro, Damir Lelas, Nikola Godinovic, Axel Arbet Engels, Sidika Merve Colak, Lea Heckmann, Francesco Gabriele Saturni, Monica Vazquez Acosta, Moritz Hütten, David H. Green, Takeshi Nakamori, Santiago Ubach, Barbara De Lotto, Dorota Sobczyńska, Zeljka Bosnjak, Tomohiko Oka, Roberto Carosi, Matteo Cerruti, Camilla Maggio, Simona Paiano, Kyoshi Nishijima, Alicia Fattorini, Kazuma Ishio, Yasushi Fukazawa, Elisa Prandini, Ashot Chilingarian, Davide Miceli, Alessia Spolon, Léa Jouvin, Vassil Verguilov, Pratik Majumdar, Daniel Kerszberg, Marc Ribó, Martin Will, Jorge Otero-Santos, Hidetoshi Kubo, Tomohiro Inada, Seiya Nozaki, Juan Abel Barrio, Narek Sahakyan, Carlos Delgado Mendez, Manuel Delfino, Ulisses Barres de Almeida, Ana Babić, Sargis Gasparyan, Daniel Morcuende, Jose Luis Contreras, Wolfgang Rhode, Giovanni Busetto, Juan Cortina, Stefano Truzzi, Pablo Peñil, Hendrik Bökenkamp, Saša Mićanović, Ivana Batković, Ryuji Takeishi, D. M. Strom, Kari Nilsson, Shunsuke Sakurai, Alice Donini, Lara Nava, Fabrizio Tavecchio, Eduardo Colombo, Serena Loporchio, D. Dominis Prester, Jenni Jormanainen, Bernardo Machado de Oliveira Fraga, Alexander Hahn, Marine Pihet, Takashi Saito, Dominik Baack, Yukiho Kobayashi, Mosè Mariotti, Saverio Lombardi, and Andrea Rugliancich
Subjects: Physics, Active galactic nucleus, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Flux, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy, Universe, Crab Nebula, MAGIC (telescope), Blazar, Astrophysics::Galaxy Astrophysics, media_common
Abstract: Blazars, together with other active galactic nuclei, are the most luminous persistent sources in our universe; and therefore a prime candidate for very-high-energy (>0.2 TeV, VHE) gamma-ray observations. For the two MAGIC telescopes, the Mrk501 galaxy is among the brightest observed blazars due to its proximity. We report a multi-wavelength and multi-messenger study of Mrk501 with data from 2017 to 2020, when Mrk501 showed a VHE flux typically below 10% that of the Crab Nebula. During this time, we performed three long observations with NuSTAR, which characterized the hard X-ray emission during three different low-activity flux levels. This Mrk501 dataset provided the unprecedented opportunity to study multi-wavelength variability and correlations with sensitive instruments during historically low X-ray and VHE gamma-ray emission (below 5% of the Crab Nebula flux in the VHE range), which could be considered as the baseline emission of Mrk501. We complemented the broadband spectral energy distributions (SED) of the identified historically low X-ray and VHE gamma-ray flux with data published by IceCube, in order to evaluate the potential existence of a hadronic component that is stable (or slowly variable), and less visible than the leptonic component that may dominate the emission during typical and flaring activity. In this contribution, we will also describe the evolution of the broadband SED comparing different theoretical scenarios., PoS: Proceedings of Science, 395, ISSN:1824-8039, 37th International Cosmic Ray Conference (ICRC 2021)
Published: 2022
Full Text: View/download PDF

5. BL Lac object 1ES 0647+250, a decade of MWL observations

Author: Francesco Longo, John Hoang, Cosimo Nigro, Abelardo Moralejo, Elia Do Souto Espiñeira, Sofia Ventura, Lluis Font, Alessandra Lamastra, Josefa González, Alexander Hahn, Manuel Artero, Vincenzo Vitale, Chiara Righi, Martin Makariev, Oscar Blanch, Maria-Isabel Bernardos, Tomislav Terzić, Dominik Elsaesser, Razmik Mirzoyan, Marcel Strzys, Daniel Kerszberg, Marine Pihet, Ryuji Takeishi, D. M. Strom, Kari Nilsson, Serena Loporchio, Damir Lelas, Simone Mender, Javier Herrera, Mosè Mariotti, Francesco Leone, Pratik Majumdar, Julian Sitarek, Davide Depaoli, Stefano Truzzi, Bernd Schleicher, Takeshi Nakamori, Lea Heckmann, Francesco Gabriele Saturni, Saverio Lombardi, Alice Donini, Andrea Rugliancich, Edgar Molina, D. Dominis Prester, Marc Ribó, Katsuaki Asano, Chaitanya Priyadarshi, Alessio Berti, Barbara De Lotto, Daniela Hadasch, Dorota Sobczyńska, Zeljka Bosnjak, Sidika Merve Colak, Monica Vazquez Acosta, Tomohiko Oka, Simona Paiano, Giacomo D'Amico, Lara Nava, Vandad Fallah Ramazani, Maria Victoria Fonseca, Martin Will, Hidetoshi Kubo, Tomohiro Inada, Jorge Otero-Santos, Pablo Peñil, Leonardo Di Venere, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Camilla Maggio, Satoshi Fukami, Alicia Fattorini, Fabrizio Tavecchio, Jenni Jormanainen, Josep M. Paredes, Louis Antonelli, L. Maraschi, Seiya Nozaki, Nikola Godinovic, Axel Arbet Engels, Eduardo Colombo, Adrian Biland, Antonio Stamerra, Elina Lindfors, Yoshiki Ohtani, Jordi Delgado, Marcos López-Moya, Ivica Puljak, Wlodek Bednarek, Federico Di Pierro, Giacomo Bonnoli, Kyoshi Nishijima, Bernardo Machado de Oliveira Fraga, Manuel Delfino, Ulisses Barres de Almeida, Tjark Miener, David Paneque, Daniel Mazin, Tihomir Surić, Ruben Lopez-Coto, Kazuma Ishio, Masahiro Teshima, Jarred Gershon Green, Yating Chai, Kevin Schmidt, P. G. Prada Moroni, Ramon J. García López, Stefan Cikota, Matteo Cerruti, Yusuke Suda, Irene Jiménez Martínez, Pawel Gliwny, Nicola Giglietto, Juan Abel Barrio, Narek Sahakyan, Carlo Vigorito, Ana Babić, Massimo Persic, Jelena Strišković, Marina Manganaro, Andrés Baquero, Jose Miguel Miranda, Victoria Moreno, Lena Linhoff, Saša Mićanović, Ivana Batković, Darko Zarić, Roberto Carosi, Daniel Morcuende, Carolin Wunderlich, Jose Luis Contreras, Elisa Prandini, Juan Cortina, Yasushi Fukazawa, Paolo Da Vela, Yuki Iwamura, Junko Kushida, Carlos Delgado Mendez, Karl Mannheim, Lovro Pavletić, Stefano Covino, Marie Karjalainen, David H. Green, Elena Moretti, Davide Miceli, Francesco Dazzi, Hendrik Bökenkamp, Daniela Dorner, Gaia Vanzo, Santiago Ubach, Konstancja Satalecka, Lorenzo Bellizzi, Alessia Spolon, Manuela Mallamaci, Ashot Chilingarian, Ievgen Vovk, Léa Jouvin, Michele Doro, Alessandro De Angelis, Dario Hrupec, M. I. Martínez, Michele Palatiello, Alicia López-Oramas, Giovanni Ceribella, Javier Rico, Tokonatsu Yamamoto, Vitaly Neustroev, Stefano Menchiari, Ciro Bigongiari, Mitsunari Takahashi, Vassil Verguilov, Luca Tosti, Petar Temnikov, Sargis Gasparyan, Koji Noda, Wrijupan Bhattacharyya, Valerio D'Elia, Iva Šnidarić, Elisa Bernardini, Markus Garczarczyk, G. Maneva, Takashi Saito, Juliane van Scherpenberg, Wolfgang Rhode, Giovanni Busetto, Dominik Baack, Yukiho Kobayashi, Christian Fruck, Shunsuke Sakurai, Thomas Schweizer, Stefano Ansoldi, Riccardo Paoletti, Victor A. Acciari, Markus Gaug, and Moritz Hütten
Subjects: Physics, Crab Nebula, Astrophysics::High Energy Astrophysical Phenomena, Flux, Spectral energy distribution, MAGIC (telescope), Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Blazar, Spectral line, Redshift, BL Lac object
Abstract: The high-peaked BL Lac object 1ES 0647+250 is one of the few distant blazars detected at very-high-energy (VHE, E>100 GeV) γ rays during non-flaring activity. Its redshift is still uncertain, with a recently proposed lower limit of z>0.29. This blazar was first detected by the MAGIC telescopes between 2009 and 2011 during its low state, displaying a flux of around 2% of the Crab Nebula above 100 GeV, but it has shown several periods of high activity, where the VHE γ-ray flux increased by more than one order of magnitude. The VHE spectra of four observed periods are characterized and the redshift of this source is estimated using the HE and VHE spectral shapes. The multi-wavelength data set collected from 2009 to 2020 introduced in this work will serve as the seed for further studies, including detailed studies of the broad-band spectral energy distribution for different activity levels and multi-band variability and correlation studies., PoS: Proceedings of Science, 395, ISSN:1824-8039, 37th International Cosmic Ray Conference (ICRC 2021)
Published: 2022

6. Search for Gamma-ray Line emission from Dark Matter annihilation in the Galactic Centre with the MAGIC telescopes

Author: Tomohiro Inada, Ana Babic, Andrés Baquero, Ivana Batković, Josefa Becerra Gonzalez, Jürgen Besenrieder, Hendrik Bökenkamp, Zeljka Bosnjak, Elia Do Souto Espiñeira, Ramon J. García López, Nikola Godinovic, Moritz Hütten, Irene Jiménez Martínez, Ruben Lopez-Coto, Marcos López-Moya, Alicia López-Oramas, Mosè Mariotti, Manel Martinez, Saša Mićanović, Lovro Pavletić, Pablo Peñil, Marc Ribó, Iva Šnidarić, Jelena Strišković, Tihomir Surić, Tomislav Terzic, Darko Zarić, Victor A. Acciari, Stefano Ansoldi, Lucio Angelo Antonelli, Axel Arbet Engels, Manuel Artero, Katsuaki Asano, Dominik Baack, Ana Babić, Ulisses Barres de Almeida, Juan Abel Barrio, Josefa Becerra González, Wlodek Bednarek, Lorenzo Bellizzi, Elisa Bernardini, Maria-Isabel Bernardos, Alessio Berti, Wrijupan Bhattacharyya, Ciro Bigongiari, Adrian Biland, Oscar Blanch, Giacomo Bonnoli, Željka Bošnjak, Giovanni Busetto, Roberto Carosi, Giovanni Ceribella, Matteo Cerruti, Yating Chai, Ashot Agassi Chilingarian, Stefan Cikota, Sidika Merve Colak, Eduardo Colombo, Jose Luis Contreras, Juan Cortina, Stefano Covino, Giacomo D'Amico, Valerio D'Elia, Paolo Da Vela, Francesco Dazzi, Alessandro De Angelis, Barbara De Lotto, Manuel Delfino, Jordi Delgado, Carlos Delgado Mendez, Davide Depaoli, Federico Di Pierro, Leonardo Di Venere, Dijana Dominis Prester, Alice Donini, Daniela Dorner, Michele Doro, Dominik Elsaesser, Vandad Fallah Ramazani, Alicia Fattorini, Maria Victoria Fonseca, Lluis Font, Christian Fruck, Satoshi Fukami, Yasushi Fukazawa, Markus Garczarczyk, Sargis Gasparyan, Markus Gaug, Nicola Giglietto, Francesco Giordano, Pawel Gliwny, Nikola Godinović, David Green, Jarred Gershon Green, Daniela Hadasch, Alexander Hahn, Lea Heckmann, Javier Herrera, John Hoang, Dario Hrupec, Kazuma Ishio, Yuki Iwamura, Irene Jimenez-Martinez, Jenni Jormanainen, Léa Jouvin, Marie Karjalainen, Daniel Kerszberg, Yukiho Kobayashi, Hidetoshi Kubo, Junko Kushida, Alessandra Lamastra, Damir LELAS, Francesco Leone, Elina Lindfors, Lena Linhoff, Saverio Lombardi, Francesco Longo, Rubén López-Coto, Serena Loporchio, Bernardo Machado de Oliveira Fraga, Camilla Maggio, Pratik Majumdar, Martin MAKARIEV, Manuela Mallamaci, Galina Maneva, Marina Manganaro, Karl Mannheim, Laura Maraschi, Manel Martínez, Daniel Mazin, Stefano Menchiari, Simone Mender, Davide Miceli, Tjark Miener, Jose Miguel Miranda, Razmik Mirzoyan, Edgar Molina, Abelardo Moralejo, Daniel Morcuende, Victoria Moreno, Elena Moretti, Takeshi Nakamori, Lara Nava, Vitaly Neustroev, Cosimo Nigro, Kari Nilsson, Kyoshi Nishijima, Koji Noda, Seiya Nozaki, Yoshiki Ohtani, Tomohiko Oka, Jorge Otero-Santos, Simona Paiano, Michele Palatiello, David Paneque, Riccardo Paoletti, Josep M. Paredes, Massimo Persic, Marine Pihet, Pier Giorgio Prada Moroni, Elisa Prandini, Chaitanya Priyadarshi, Ivica Puljak, Wolfgang Rhode, Javier Rico, Chiara Righi, Andrea Rugliancich, Narek Sahakyan, Takayuki Saito, Shunsuke Sakurai, Konstancja Satalecka, Francesco Gabriele Saturni, Bernd Schleicher, Kevin Schmidt, Thomas Schweizer, Julian Sitarek, Dorota Sobczyńska, Alessia Spolon, Antonio Stamerra, Derek Strom, Marcel C. Strzys, Yusuke Suda, Mitsunari Takahashi, Ryuji Takeishi, Fabrizio Tavecchio, Petar Temnikov, Tomislav Terzić, Masahiro Teshima, Luca Tosti, Stefano Truzzi, Antonio Tutone, Santiago Ubach, Juliane van Scherpenberg, Gaia Vanzo, Monica VAZQUEZ ACOSTA, Sofia Ventura, Vassil VERGUILOV, Carlo francesco Vigorito, Vincenzo Vitale, Ievgen Vovk, Martin Will, Carolin Wunderlich, Tokonatsu Yamamoto, and Daniele Ninci
Subjects: Physics, Annihilation, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy, Spectral line, Sky, MAGIC (telescope), Zenith, Astrophysics::Galaxy Astrophysics, media_common
Abstract: We present the first search for dark matter (DM) spectral lines in the Galactic centre (GC) region with the MAGIC telescopes. The MAGIC telescopes, located on the Canary island of La Palma (Spain), are sensitive to gamma rays in the energy range from 50 GeV to 50 TeV. MAGIC has performed indirect DM searches in various astrophysical targets, such as dwarf spheroidal galaxies and clusters of galaxies. Observations at high zenith angles significantly increase the telescopes' collection area and sensitivity for gamma rays in the TeV regime. We present the results obtained with more than 200 hours of high-zenith angle observations of the GC region with MAGIC, which allow us to probe promising heavy SUSY models, and to obtain competitive limits to the DM annihilation cross-section at high DM particle mass, compared to existing constraints. We will discuss how we exploit the data from a complex sky region to search for a line-like DM signature., PoS: Proceedings of Science, 395, ISSN:1824-8039, 37th International Cosmic Ray Conference (ICRC 2021)
Published: 2022
Full Text: View/download PDF

7. Investigation of the correlation patterns and the Compton dominance variability of Mrk 421 in 2017

Author: Katsuaki Asano, I. Jiménez, A. Fuentes, C. M. Raiteri, D. Dominis Prester, E. Molina, E. Colombo, Y. V. Troitskaya, Nikola Godinovic, Sidika Merve Colak, Jenni Jormanainen, Yuki Iwamura, Alessandra Lamastra, Lab Saha, Antoniya Valcheva, Sunay Ibryamov, Elena G. Larionova, B. De Lotto, Evgeni Ovcharov, D. Zarić, Kazuma Ishio, David A. Green, M. Villata, D. Horan, Givi N. Kimeridze, Alexander Hahn, S. Nozaki, M. Perri, Michael D. Joner, D. Neise, S. Loporchio, R. J. García López, Marcello Giroletti, Victor A. Acciari, V. Fallah Ramazani, Tomohiko Oka, Daniela Dorner, Narek Sahakyan, J. Kushida, M. Kopp, Lorenzo Bellizzi, Noah Biederbeck, Joseph Moody, M. Gaug, L. Schneider, A. López-Oramas, Daniel Morcuende, N. Rizzi, Jose Luis Contreras, G. Vanzo, Rodolfo Carosi, L. Maraschi, Andrés Baquero, M. I. Carnerero, R. Iotov, Mosè Mariotti, A. Paravac, John Hoang, Ashwani Pandey, Z. R. Weaver, Francesco Longo, F. D'Ammando, S. Paiano, Elina Lindfors, Moritz Hütten, J. Herrera, Koji Noda, Abelardo Moralejo, Laura Eisenberger, E. Moretti, Julian Sitarek, Marcos López-Moya, Wlodek Bednarek, L. Di Venere, Ashot Chilingarian, U. Barres de Almeida, Elisa Bernardini, I. Agudo, M. Feige, R. Z. Ivanidze, O. A. Merkulova, D. Depaoli, M. Spencer, Massimo Persic, J. van Scherpenberg, Pratik Majumdar, L. Kunkel, K. Nishijima, Stefano Ansoldi, Juan Cortina, Kai Phillip Schmidt, A. Berti, Riccardo Paoletti, Saverio Lombardi, Daniel Mazin, M. V. Fonseca, Damir Lelas, R. J. C. Vera, Sanae Inoue, Giacomo D'Amico, Dominik Baack, C. Perennes, A. A. Nikiforova, Yating Chai, Stefan Cikota, G. M. Madejski, A. Arbet Engels, Daniel Kerszberg, Manuel Artero, E. Do Souto Espiñeira, Tomislav Terzić, J. Becerra González, Martin Makariev, R. Mirzoyan, Yoshiki Ohtani, G. A. Borman, Pawel Gliwny, Jose Miguel Miranda, A. De Angelis, Vitaly Neustroev, Wara Chamani, Oscar Blanch, T. S. Grishina, Martin Will, M. Vazquez Acosta, Nicola Giglietto, L. V. Larionova, Lea Heckmann, Francesco Gabriele Saturni, Jorge Otero-Santos, R. A. Chigladze, M. Balbo, N. Marchili, D. Hadasch, P. G. Prada Moroni, A. A. Vasilyev, M. G. Nikolashvili, Jordi Delgado, V. Ramakrishnan, Christian Fruck, G. Busetto, Victoria Moreno, Luca Tosti, A. Rugliancich, C. Nigro, Marina Manganaro, Valeri M. Larionov, M. Balokovic, Manuel Delfino, A. Strigachev, J. M. Paredes, Manash R. Samal, Stefano Covino, I. Vovk, H. C. Lin, Ž. Bošnjak, Stefano Menchiari, Rumen Bachev, Marc Ribó, Dorota Sobczyńska, Carolin Wunderlich, Bernd Schleicher, M. Minev, Antonio Stamerra, Maria-Isabel Bernardos, I. S. Troitskiy, Merja Tornikoski, E. N. Kopatskaya, Shunsuke Sakurai, Camilla Maggio, Chiara Righi, F. Verrecchia, P. Temnikov, S. G. Jorstad, T. Schweizer, Hidetoshi Kubo, Lluis Font, A. Y. Lien, Toshiaki Inada, A. Scherbantin, Lorand A. Sigua, G. Maneva, Stefano Truzzi, B. Machado de Oliveira Fraga, V. Bozhilov, M. Palatiello, Alessandro Marchini, Chaitanya Priyadarshi, Alessia Spolon, Léa Jouvin, Konstancja Satalecka, Tomoki Saito, Giovanni Ceribella, Michele Doro, S. O. Kurtanidze, Carlo Vigorito, Pablo Peñil, D. Strom, Giacomo Bonnoli, Adrian Biland, Ana Babić, Alicia Fattorini, D. Hildebrand, Satoshi Fukami, G. Ferrara, Y. Kajiwara, Matteo Cerruti, P. Da Vela, Vassil Verguilov, Lovro Pavletić, C. Delgado Mendez, Emilia Järvelä, S. Mićanović, Sergey S. Savchenko, Ivica Puljak, M. Noethe, Simone Mender, Francesco Dazzi, V. Vitale, Manuela Mallamaci, Ivana Batković, F. Leone, M. I. Martínez, J. Rico, Alan P. Marscher, C. Lorey, S. Ventura, Tjark Miener, Anne Lähteenmäki, David Paneque, Masahiro Teshima, Jarred Gershon Green, Wrijupan Bhattacharyya, Kari Nilsson, R. Walter, M. Strzys, D. Reinhart, E. Zaharieva, Wen Ping Chen, Vitalii Sliusar, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Thomas Bretz, J. Buss, Alok C. Gupta, Simona Righini, O. M. Kurtanidze, Ciro Bigongiari, O. Vince, D. Elsaesser, C. Leto, M. Garczarczyk, Sargis Gasparyan, J. Kania, Dario Hrupec, R. López-Coto, Wolfgang Rhode, I. Snidaric, D. A. Morozova, Vladimir A. Hagen-Thorn, Mitsunari Takahashi, J. A. Acosta-Pulido, E. Prandini, Marie Karjalainen, D. Miceli, Goran Damljanović, Evgeni Semkov, Alice Donini, L. A. Antonelli, J. A. Barrio, Y. Suda, D. Carosati, V. D'Elia, Fabrizio Tavecchio, A. C. Sadun, Tihomir Surić, C. Casadio, Karl Mannheim, Santiago Ubach, Y. Kobayashi, F. Di Pierro, European Commission, European Research Council, Ministerio de Ciencia e Innovación (España), Generalitat de Catalunya, Federal Ministry of Education and Research (Germany), German Research Foundation, Swiss National Science Foundation, Croatian Science Foundation, Ministry of Education, Science and Technological Development (Serbia), Bulgarian National Science Fund, National Aeronautics and Space Administration (US), Acciari, V. A., Ansoldi, S., Antonelli, L. A., Arbet Engels, A., Artero, M., Asano, K., Babi??, A., Baquero, A., Barres de Almeida, U., Barrio, J. A., Batkovi??, I., Becerra Gonz??lez, J., Bednarek, W., Bellizzi, L., Bernardini, E., Bernardos, M., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Blanch, O., Bo??njak, ??., Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingarian, A., Cikota, S., Colak, S. M., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D???amico, G., D???elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Delgado Mendez, C., Depaoli, D., Di Pierro, F., Di Venere, L., Do Souto Espi??eira, E., Dominis Prester, D., Donini, A., Doro, M., Fallah Ramazani, V., Fattorini, A., Ferrara, G., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., Garc??a L??pez, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Gliwny, P., Godinovi??, N., Green, J. G., Green, D., Hadasch, D., Hahn, A., Heckmann, L., Herrera, J., Hoang, J., Hrupec, D., H??tten, M., Inada, T., Inoue, S., Ishio, K., Iwamura, Y., Jim??nez, I., Jormanainen, J., Jouvin, L., Kajiwara, Y., Karjalainen, M., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., L??pez-Coto, R., L??pez-Moya, M., L??pez-Oramas, A., Loporchio, S., Machado de Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Maraschi, L., Mariotti, M., Mart??nez, M., Mazin, D., Menchiari, S., Mender, S., Mi??anovi??, S., Miceli, D., Miener, T., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Neustroev, V., Nigro, C., Nilsson, K., Nishijima, K., Noda, K., Nozaki, S., Ohtani, Y., Oka, T., Otero-Santos, J., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavleti??, L., Pe??il, P., Perennes, C., Persic, M., Prada Moroni, P. G., Prandini, E., Priyadarshi, C., Puljak, I., Rib??, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Saturni, F. G., Schmidt, K., Schweizer, T., Sitarek, J., nidari??, I., Sobczynska, D., Spolon, A., Stamerra, A., Strom, D., Strzys, M., Suda, Y., Suri??, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzi??, T., Teshima, M., Tosti, L., Truzzi, S., Tutone, A., Ubach, S., van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Ventura, S., Verguilov, V., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Wunderlich, C., Zari??, D., Baack, D., Balbo, M., Biederbeck, N., Biland, A., Bretz, T., Buss, J., Dorner, D., Eisenberger, L., Elsaesser, D., Hildebrand, D., Iotov, R., Mannheim, K., Neise, D., Noethe, M., Paravac, A., Rhode, W., Schleicher, B., Sliusar, V., Walter, R., D???ammando, F., Horan, D., Lien, A. Y., Balokovi??, M., Madejski, G. M., Perri, M., Verrecchia, F., Leto, C., L??hteenm??ki, A., Tornikoski, M., Ramakrishnan, V., J??rvel??, E., Vera, R. J. C., Chamani, W., Villata, M., Raiteri, C. M., Gupta, A. C., Pandey, A., Fuentes, A., Agudo, I., Casadio, C., Semkov, E., Ibryamov, S., Marchini, A., Bachev, R., Strigachev, A., Ovcharov, E., Bozhilov, V., Valcheva, A., Zaharieva, E., Damljanovic, G., Vince, O., Larionov, V. M., Borman, G. A., Grishina, T. S., Hagen-Thorn, V. A., Kopatskaya, E. N., Larionova, E. G., Larionova, L. V., Morozova, D. A., Nikiforova, A. A., Savchenko, S. S., Troitskiy, I. S., Troitskaya, Y. V., Vasilyev, A. A., Merkulova, O. A., Chen, W. P., Samal, M., Lin, H. C., Moody, J. W., Sadun, A. C., Jorstad, S. G., Marscher, A. P., Weaver, Z. R., Feige, M., Kania, J., Kopp, M., Kunkel, L., Reinhart, D., Scherbantin, A., Schneider, L., Lorey, C., Acosta-Pulido, J. A., Carnerero, M. I., Carosati, D., Kurtanidze, S. O., Kurtanidze, O. M., Nikolashvili, M. G., Chigladze, R. A., Ivanidze, R. Z., Kimeridze, G. N., Sigua, L. A., Joner, M. D., Spencer, M., Giroletti, M., Marchili, N., Righini, S., Rizzi, N., Bonnoli, G., Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), MAGIC, FACT, Department of Electronics and Nanoengineering, Aalto-yliopisto, and Aalto University
Subjects: electron, PARTICLE-ACCELERATION, ELECTRON ACCELERATION, Radiation mechanisms: non-thermal, RAY, VHE [gamma ray], galaxies: active, BL Lacertae objects: individual: Mrk 421, radiation mechanisms: non-thermal, Electron, Astrophysics, GeV, 01 natural sciences, 7. Clean energy, LARGE-AREA TELESCOPE, law.invention, OBSERVATIONS, law, ultraviolet, optical, MAGIC (telescope), correlation [flux], 010303 astronomy & astrophysics, X-ray: flux, model: leptonic, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), BL-LACERTAE, individual: Mrk 421 [BL Lacertae objects], flux [X-ray], Gamma ray, flux: correlation, Galaxies: active, non-thermal [radiation mechanisms], Synchrotron, SWIFT OBSERVATIONS, active [galaxies], Spectral energy distribution, Física nuclear, Astrophysics - High Energy Astrophysical Phenomena, Lorentz, Flare, LOG-PARABOLIC SPECTRA, ACTIVE GALACTIC NUCLEI, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, radiation, mechanisms: non-thermal, LIGHT CURVES, X-RAY, MULTIWAVELENGTH, GLAST, leptonic [model], blazar, 0103 physical sciences, TeV, Blazar, 010308 nuclear & particles physics, Astronomy and Astrophysics, MAGIC, gamma ray: VHE, Space and Planetary Science, ddc:520, spectral, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Fermi Gamma-ray Space Telescope
Abstract: Full list of authors: Acciari, V. A.; Ansoldi, S.; Antonelli, L. A.; Arbet Engels, A.; Artero, M.; Asano, K.; Babić, A.; Baquero, A.; Barres de Almeida, U.; Barrio, J. A.; Batković, I.; Becerra González, J.; Bednarek, W.; Bellizzi, L.; Bernardini, E.; Bernardos, M.; Berti, A.; Besenrieder, J.; Bhattacharyya, W.; Bigongiari, C.; Blanch, O.; Bošnjak, Ž.; Busetto, G.; Carosi, R.; Ceribella, G.; Cerruti, M.; Chai, Y.; Chilingarian, A.; Cikota, S.; Colak, S. M.; Colombo, E.; Contreras, J. L.; Cortina, J.; Covino, S.; D'Amico, G.; D'Elia, V.; da Vela, P.; Dazzi, F.; de Angelis, A.; de Lotto, B.; Delfino, M.; Delgado, J.; Delgado Mendez, C.; Depaoli, D.; di Pierro, F.; di Venere, L.; Do Souto Espiñeira, E.; Dominis Prester, D.; Donini, A.; Doro, M.; Fallah Ramazani, V.; Fattorini, A.; Ferrara, G.; Fonseca, M. V.; Font, L.; Fruck, C.; Fukami, S.; García López, R. J.; Garczarczyk, M.; Gasparyan, S.; Gaug, M.; Giglietto, N.; Giordano, F.; Gliwny, P.; Godinović, N.; Green, J. G.; Green, D.; Hadasch, D.; Hahn, A.; Heckmann, L.; Herrera, J.; Hoang, J.; Hrupec, D.; Hütten, M.; Inada, T.; Inoue, S.; Ishio, K.; Iwamura, Y.; Jiménez, I.; Jormanainen, J.; Jouvin, L.; Kajiwara, Y.; Karjalainen, M.; Kerszberg, D.; Kobayashi, Y.; Kubo, H.; Kushida, J.; Lamastra, A.; Lelas, D.; Leone, F.; Lindfors, E.; Lombardi, S.; Longo, F.; López-Coto, R.; López-Moya, M.; López-Oramas, A.; Loporchio, S.; Machado de Oliveira Fraga, B.; Maggio, C.; Majumdar, P.; Makariev, M.; Mallamaci, M.; Maneva, G.; Manganaro, M.; Maraschi, L.; Mariotti, M.; Martínez, M.; Mazin, D.; Menchiari, S.; Mender, S.; Mićanović, S.; Miceli, D.; Miener, T.; Minev, M.; Miranda, J. M.; Mirzoyan, R.; Molina, E.; Moralejo, A.; Morcuende, D.; Moreno, V.; Moretti, E.; Neustroev, V.; Nigro, C.; Nilsson, K.; Nishijima, K.; Noda, K.; Nozaki, S.; Ohtani, Y.; Oka, T.; Otero-Santos, J.; Paiano, S.; Palatiello, M.; Paneque, D.; Paoletti, R.; Paredes, J. M.; Pavletić, L.; Peñil, P.; Perennes, C.; Persic, M.; Prada Moroni, P. G.; Prandini, E.; Priyadarshi, C.; Puljak, I.; Ribó, M.; Rico, J.; Righi, C.; Rugliancich, A.; Saha, L.; Sahakyan, N.; Saito, T.; Sakurai, S.; Satalecka, K.; Saturni, F. G.; Schmidt, K.; Schweizer, T.; Sitarek, J.; Šnidarić, I.; Sobczynska, D.; Spolon, A.; Stamerra, A.; Strom, D.; Strzys, M.; Suda, Y.; Surić, T.; Takahashi, M.; Tavecchio, F.; Temnikov, P.; Terzić, T.; Teshima, M.; Tosti, L.; Truzzi, S.; Tutone, A.; Ubach, S.; van Scherpenberg, J.; Vanzo, G.; Vazquez Acosta, M.; Ventura, S.; Verguilov, V.; Vigorito, C. F.; Vitale, V.; Vovk, I.; Will, M.; Wunderlich, C.; Zarić, D.; Baack, D.; Balbo, M.; Biederbeck, N.; Biland, A.; Bretz, T.; Buss, J.; Dorner, D.; Eisenberger, L.; Elsaesser, D.; Hildebrand, D.; Iotov, R.; Mannheim, K.; Neise, D.; Noethe, M.; Paravac, A.; Rhode, W.; Schleicher, B.; Sliusar, V.; Walter, R.; D'Ammando, F.; Horan, D.; Lien, A. Y.; Baloković, M.; Madejski, G. M.; Perri, M.; Verrecchia, F.; Leto, C.; Lähteenmäki, A.; Tornikoski, M.; Ramakrishnan, V.; Järvelä, E.; Vera, R. J. C.; Chamani, W.; Villata, M.; Raiteri, C. M.; Gupta, A. C.; Pandey, A.; Fuentes, A.; Agudo, I.; Casadio, C.; Semkov, E.; Ibryamov, S.; Marchini, A.; Bachev, R.; Strigachev, A.; Ovcharov, E.; Bozhilov, V.; Valcheva, A.; Zaharieva, E.; Damljanovic, G.; Vince, O.; Larionov, V. M.; Borman, G. A.; Grishina, T. S.; Hagen-Thorn, V. A.; Kopatskaya, E. N.; Larionova, E. G.; Larionova, L. V.; Morozova, D. A.; Nikiforova, A. A.; Savchenko, S. S.; Troitskiy, I. S.; Troitskaya, Y. V.; Vasilyev, A. A.; Merkulova, O. A.; Chen, W. P; Samal, M.; Lin, H. C.; Moody, J. W.; Sadun, A. C.; Jorstad, S. G.; Marscher, A. P.; Weaver, Z. R.; Feige, M.; Kania, J.; Kopp, M.; Kunkel, L.; Reinhart, D.; Scherbantin, A.; Schneider, L.; Lorey, C.; Acosta-Pulido, J. A.; Carnerero, M. I.; Carosati, D.; Kurtanidze, S. O.; Kurtanidze, O. M.; Nikolashvili, M. G.; Chigladze, R. A.; Ivanidze, R. Z.; Kimeridze, G. N.; Sigua, L. A.; Joner, M. D.; Spencer, M.; Giroletti, M.; Marchili, N.; Righini, S.; Rizzi, N.; Bonnoli, G.; MAGIC Collaboration; Fact Collaboration.-- This is an Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited., Aims. We present a detailed characterisation and theoretical interpretation of the broadband emission of the paradigmatic TeV blazar Mrk 421, with a special focus on the multi-band flux correlations. Methods. The dataset has been collected through an extensive multi-wavelength campaign organised between 2016 December and 2017 June. The instruments involved are MAGIC, FACT, Fermi-LAT, Swift, GASP-WEBT, OVRO, Medicina, and Metsahovi. Additionally, four deep exposures (several hours long) with simultaneous MAGIC and NuSTAR observations allowed a precise measurement of the falling segments of the two spectral components. Results. The very-high-energy (VHE; E 100 GeV) gamma rays and X-rays are positively correlated at zero time lag, but the strength and characteristics of the correlation change substantially across the various energy bands probed. The VHE versus X-ray fluxes follow dierent patterns, partly due to substantial changes in the Compton dominance for a few days without a simultaneous increase in the X-ray flux (i.e., orphan gamma-ray activity). Studying the broadband spectral energy distribution (SED) during the days including NuSTAR observations, we show that these changes can be explained within a one-zone leptonic model with a blob that increases its size over time. The peak frequency of the synchrotron bump varies by two orders of magnitude throughout the campaign. Our multi-band correlation study also hints at an anti-correlation between UV-optical and X-ray at a significance higher than 3. A VHE flare observed on MJD 57788 (2017 February 4) shows gamma-ray variability on multi-hour timescales, with a factor ten increase in the TeV flux but only a moderate increase in the keV flux. The related broadband SED is better described by a two-zone leptonic scenario rather than by a one-zone scenario.We find that the flare can be produced by the appearance of a compact second blob populated by high energetic electrons spanning a narrow range of Lorentz factors, from 0 min = 2104 to 0 max = 6105. © 2021 Georg Thieme Verlag. All rights reserved., The MAGIC Collaboration would like to thank the Instituto de Astrofísica de Canarias for the excellent working conditions at the Observatorio del Roque de los Muchachos in La Palma. The financial support of the German BMBF, MPG and HGF; the Italian INFN and INAF; the Swiss National Fund SNF; the ERDF under the Spanish Ministerio de Ciencia e Innovación (MICINN) (FPA2017-87859-P, FPA2017-85668-P, FPA2017-82729-C6-5-R, FPA2017-90566-REDC, PID2019-104114RB-C31, PID2019-104114RB-C32, PID2019-105510GB-C31,PID2019-107847RB-C41, PID2019-107847RB-C42, PID2019-107847RB-C44, PID2019-107988GB-C22); the Indian Department of Atomic Energy; the Japanese ICRR, the University of Tokyo, JSPS, and MEXT; the Bulgarian Ministry of Education and Science, National RI Roadmap Project DO1-268/16.12.2019 and the Academy of Finland grant nr. 320045 is gratefully acknowledged. This work was also supported by the Spanish Centro de Excelencia “Severo Ochoa” SEV-2016-0588, SEV-2017-0709 and CEX2019-000920-S, and “María de Maeztu” CEX2019-000918-M, the Unidad de Excelencia “María de Maeztu” MDM-2015-0509-18-2 and the “la Caixa” Foundation (fellowship LCF/BQ/PI18/11630012) and by the CERCA program of the Generalitat de Catalunya; by the Croatian Science Foundation (HrZZ) Project IP-2016-06-9782 and the University of Rijeka Project 13.12.1.3.02; by the DFG Collaborative Research Centers SFB823/C4 and SFB876/C3; the Polish National Research Centre grant UMO-2016/22/M/ST9/00382; and by the Brazilian MCTIC, CNPq and FAPERJ. The important contributions from ETH Zurich grants ETH-10.08-2 and ETH-27.12-1 as well as the funding by the Swiss SNF and the German BMBF (Verbundforschung Astro- und Astroteilchenphysik) and HAP (Helmoltz Alliance for Astroparticle Physics) are gratefully acknowledged. Part of this work is supported by Deutsche Forschungsgemeinschaft (DFG) within the Collaborative Research Center SFB 876 “Providing Information by Resource-Constrained Analysis”, project C3. We are thankful for the very valuable contributions from E. Lorenz, D. Renker and G. Viertel during the early phase of the project. We thank the Instituto de Astrofísica de Canarias for allowing us to operate the telescope at the Observatorio del Roque de los Muchachos in La Palma, the Max-Planck-Institut für Physik for providing us with the mount of the former HEGRA CT3 telescope, and the MAGIC collaboration for their support. The Fermi LAT Collaboration acknowledges generous ongoing support from a number of agencies and institutes that have supported both the development and the operation of the LAT as well as scientific data analysis. These include the National Aeronautics and Space Administration and the Department of Energy in the United States, the Commissariat à l’Energie Atomique and the Centre National de la Recherche Scientifique/Institut National de Physique Nucléaire et de Physique des Particules in France, the Agenzia Spaziale Italiana and the Istituto Nazionale di Fisica Nucleare in Italy, the Ministry of Education, Culture, Sports, Science and Technology (MEXT), High Energy Accelerator Research Organization (KEK) and Japan Aerospace Exploration Agency (JAXA) in Japan, and the K. A. Wallenberg Foundation, the Swedish Research Council and the Swedish National Space Board in Sweden. Additional support for science analysis during the operations phase is gratefully acknowledged from the Istituto Nazionale di Astrofisica in Italy and the Centre National d’Études Spatiales in France. This work performed in part under DOE Contract DE-AC02-76SF00515. This work made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration. We thank the NuSTAR Operations, Software, and Calibration teams for support with the execution and analysis of these observations. This research has made use of the NuSTAR Data Analysis Software (NuSTARDAS) jointly developed by the ASI Science Data Center (ASDC; Italy) and the California Institute of Technology (USA). This research has also made use of the XRT Data Analysis Software (XRTDAS) developed under the responsibility of the ASI Science Data Center (ASDC), Italy. A.A.E and D.P acknowledge support from the Deutsche Forschungs gemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy – EXC-2094 – 390783311. M. B. acknowledges support from the YCAA Prize Postdoctoral Fellowship and from the Black Hole Initiative at Harvard University, which is funded in part by the Gordon and Betty Moore Foundation (grant GBMF8273) and in part by the John Templeton Foundation. This publication makes use of data obtained at the Metsähovi Radio Observatory, operated by Aalto University in Finland. This research has made use of data from the OVRO 40-m monitoring program (Richards et al. 2011) which is supported in part by NASA grants NNX08AW31G, NNX11A043G, and NNX14AQ89G and NSF grants AST-0808050 and AST-1109911. I.A. acknowledges financial support from the Spanish “Ministerio de Ciencia e Innovación” (MCINN) through the “Center of Excellence Severo Ochoa” award for the Instituto de Astrofísica de Andalucía-CSIC (SEV-2017-0709). Acquisition and reduction of the MAPCAT data was supported in part by MICINN through grants AYA2016-80889-P and PID2019-107847RB-C44. The MAPCAT observations were carried out at the German-Spanish Calar Alto Observatory, which is jointly operated by Junta de Andalucía and Consejo Superior de Investigaciones Científicas. C.C. acknowledges support from the European Research Council (ERC) under the European Union Horizon 2020 research and innovation program under the grant agreement No 771282. This research was partially supported by the Bulgarian National Science Fund of the Ministry of Education and Science under grants KP-06-H28/3 (2018), KP-06-H38/4 (2019) and KP-06-KITAJ/2 (2020). We acknowledge support by Bulgarian National Science Fund under grant DN18-10/2017 and National RI Roadmap Projects DO1-277/16.12.2019 and DO1-268/16.12.2019 of the Ministry of Education and Science of the Republic of Bulgaria. This research was supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia (contract No 451-03-68/2020-14/200002). G.D. acknowledges observing grant support from the Institute of Astronomy and Rozhen NAO BAS through the bilateral joint research project “Gaia Celestial Reference Frame (CRF) and fast variable astronomical objects” (2020–2022, head – G. Damljanovic). The BU group was supported in part by NASA Fermi guest investigator program grants 80NSSC19K1505 and 80NSSC20K1566. This study was based in part on observations conducted using the 1.8 m Perkins Telescope Observatory (PTO) in Arizona, which is owned and operated by Boston University. This article is partly based on observations made with the LCOGT Telescopes, one of whose nodes is located at the Observatorios de Canarias del IAC on the island of Tenerife in the Observatorio del Teide. This article is also based partly on data obtained with the STELLA robotic telescopes in Tenerife, an AIP facility jointly operated by AIP and IAC. The Abastumani team acknowledges financial support by the Shota Rustaveli National Science Foundation under contract FR-19-6174. Based on observations with the Medicina telescope operated by INAF – Istituto di Radioastronomia.
Published: 2021
Full Text: View/download PDF

8. First detection of VHE gamma-ray emission from TXS 1515-273, study of its X-ray variability and spectral energy distribution

Author: M. I. Martínez, V. Neustroev, Francesco Longo, Maria-Isabel Bernardos, Alessandro Marchini, Alicia Fattorini, Tomohiko Oka, Katsuaki Asano, U. Barres de Almeida, Damir Lelas, Adrian Biland, D. Hadasch, D. Miceli, Sanae Inoue, Giacomo D'Amico, Yating Chai, Stefan Cikota, Pawel Gliwny, I. Vovk, David A. Green, R. J. García López, Narek Sahakyan, Stefano Covino, Lea Heckmann, Francesco Gabriele Saturni, J. Becerra González, Armin Nabizadeh, F. D'Ammando, J. Rico, M. Vazquez Acosta, Nicola Giglietto, Alexander Hahn, Nikola Godinovic, Dorota Sobczyńska, G. Ferrara, G. Busetto, E. Molina, Satoshi Fukami, Shunsuke Sakurai, Jarred Gershon Green, Elisabetta Bissaldi, C. Perennes, D. Strom, Yusuke Suda, E. Colombo, Lab Saha, Alice Donini, Kazuma Ishio, Massimo Persic, L. A. Antonelli, Martin Makariev, Dominik Baack, P. G. Prada Moroni, J. Kushida, Ivica Puljak, Victor Moreno, Oscar Blanch, S. Ventura, C. Nigro, Carlo Vigorito, F. Leone, D. Dominis Prester, Alessandra Lamastra, J. A. Barrio, John Hoang, V. Verguilov, Tomoki Saito, J. M. Paredes, Antonio Stamerra, Giovanni Ceribella, Rodolfo Carosi, I. Jiménez, V. D'Elia, Pratik Majumdar, M. V. Fonseca, Daniel Morcuende, Jose Luis Contreras, Jenni Jormanainen, Vincenzo Vitale, T. Schweizer, A. Arbet Engels, S. Loporchio, A. Rugliancich, Marina Manganaro, A. De Angelis, M. Karjalainen, Sargis Gasparyan, Stefano Menchiari, Y. Kajiwara, Fabrizio Tavecchio, M. Palatiello, Manuela Mallamaci, Masahiro Teshima, S. Paiano, Luca Tosti, I. Snidaric, Mosè Mariotti, Martin Will, M. Orienti, S. Mićanović, Ashot Chilingarian, Wolfgang Rhode, Lluis Font, B. Machado de Oliveira Fraga, Tihomir Surić, Manuel Artero, Juan Cortina, Toshiaki Inada, Yuki Iwamura, Stefano Truzzi, D. Zarić, Saverio Lombardi, Francesco Dazzi, Simone Mender, E. Do Souto Espiñeira, Tomislav Terzić, Dario Hrupec, Pablo Peñil, Konstancja Satalecka, L. Maraschi, Giacomo Bonnoli, Sidika Merve Colak, Elina Lindfors, Marcos López-Moya, G. Maneva, Karl Mannheim, Wlodek Bednarek, L. Di Venere, Mitsunari Takahashi, Michele Doro, J. van Scherpenberg, Stefano Ansoldi, Daniel Mazin, Riccardo Paoletti, Christian Fruck, Ivana Batković, E. Prandini, Wrijupan Bhattacharyya, Julian Sitarek, Santiago Ubach, Y. Kobayashi, F. Di Pierro, Jürgen Besenrieder, Lorenzo Bellizzi, Francesco Giordano, Antonio Tutone, J. Otero-Santos, K. Nishijima, Jose Miguel Miranda, Kai Phillip Schmidt, A. Berti, Yoshiki Ohtani, Tjark Miener, David Paneque, D. Elsaesser, Jordi Delgado, Ž. Bošnjak, Matteo Cerruti, Chiara Righi, V. Fallah Ramazani, V. A. Acciari, P. Temnikov, P. Da Vela, Manuel Delfino, Lovro Pavletić, Moritz Hütten, Chaitanya Priyadarshi, Carolin Wunderlich, Ana Babić, C. Delgado Mendez, M. Strzys, Kari Nilsson, Camilla Maggio, Daniela Dorner, Gaia Vanzo, M. Gaug, J. Herrera, Koji Noda, Elisa Bernardini, Alessia Spolon, Léa Jouvin, A. López-Oramas, S. Cutini, Daniel Kerszberg, Marc Ribó, B. De Lotto, S. Nozaki, Andrés Baquero, Hidetoshi Kubo, Abelardo Moralejo, E. Moretti, D. Depaoli, Bernd Schleicher, M. Minev, R. Mirzoyan, Ciro Bigongiari, M. Garczarczyk, R. López-Coto, German Research Foundation, Swiss National Science Foundation, Ministerio de Ciencia, Innovación y Universidades (España), Department of Atomic Energy (India), Institute for Cosmic Ray Research (Japan), University of Tokyo, Japan Society for the Promotion of Science, Ministry of Education, Culture, Sports, Science and Technology (Japan), Ministry of Education and Research (Romania), Academy of Finland, La Caixa, Croatian Science Foundation, University of Rijeka, Polish National Agency for Academic Exchange, European Commission, Ministerio de Economía y Competitividad (España), Istituto Nazionale di Astrofisica, Acciari, Va, Ansoldi, S, Antonelli, La, Engels, Aa, Artero, M, Asano, K, Baack, D, Babic, A, Baquero, A, de Almeida, Ub, Barrio, Ja, Batkovic, I, Gonzalez, Jb, Bednarek, W, Bellizzi, L, Bernardini, E, Bernardos, M, Berti, A, Besenrieder, J, Bhattacharyya, W, Bigongiari, C, Biland, A, Blanch, O, Bosnjak, Z, Busetto, G, Carosi, R, Ceribell, G, Cerruti, M, Chai, Y, Chilingarian, A, Cikota, S, Colak, Sm, Colombo, E, Contreras, Jl, Cortina, J, Covino, S, D'Amico, G, D'Elia, V, Da Vela, P, Dazzi, F, De Angelis, A, De Lotto, B, Delfino, M, Delgado, J, Mendez, Cd, Depaoli, D, Di Pierro, F, Di Venere, L, Espineira, Ed, Prester, Dd, Donini, A, Dorner, D, Doro, M, Elsaesser, D, Ramazani, Vf, Fattorini, A, Ferrara, G, Fonseca, Mv, Font, L, Fruck, C, Fukami, S, Lopez, Rjg, Garczarczyk, M, Gasparyan, S, Gaug, M, Giglietto, N, Giordano, F, Gliwny, P, Godinovic, N, Green, Jg, Green, D, Hadasch, D, Hahn, A, Heckmann, L, Herrera, J, Hoang, J, Hrupec, D, Hutten, M, Inada, T, Inoue, S, Ishio, K, Iwamura, Y, Jimenez, I, Jormanainen, J, Jouvin, L, Kajiwara, Y, Karjalainen, M, Kerszberg, D, Kobayashi, Y, Kubo, H, Kushida, J, Lamastra, A, Lelas, D, Leone, F, Lindfors, E, Lombardi, S, Longo, F, Lopez-Coto, R, Lopez-Moya, M, Lopez-Oramas, A, Loporchio, S, Fraga, Bmd, Maggio, C, Majumdar, P, Makariev, M, Mallamaci, M, Maneva, G, Manganaro, M, Mannheim, K, Maraschi, L, Mariotti, M, Martinez, M, Mazin, D, Menchiari, S, Mender, S, Micanovic, S, Miceli, D, Miener, T, Minev, M, Miranda, Jm, Mirzoyan, R, Molina, E, Moralejo, A, Morcuende, D, Moreno, V, Moretti, E, Neustroev, V, Nigro, C, Nilsson, K, Nishijima, K, Noda, K, Nozaki, S, Ohtani, Y, Oka, T, Otero-Santos, J, Paiano, S, Palatiello, M, Paneque, D, Paoletti, R, Paredes, Jm, Pavletic, L, Penil, P, Perennes, C, Moroni, Pgp, Prandini, E, Priyadarshi, C, Puljak, I, Rhode, W, Ribo, M, Rico, J, Righi, C, Rugliancich, A, Saha, L, Sahakyan, N, Saito, T, Sakurai, S, Satalecka, K, Saturni, Fg, Schleicher, B, Schmidt, K, Schweizer, T, Sitarek, J, Snidaric, I, Sobczynska, D, Spolon, A, Stamerra, A, Strom, D, Strzys, M, Suda, Y, Suric, T, Takahashi, M, Tavecchio, F, Temnikov, P, Terzic, T, Teshima, M, Tosti, L, Truzzi, S, Tutone, A, Ubach, S, Vanscherpenberg, J, Vanzo, G, Acosta, Mv, Ventura, S, Verguilov, V, Vigorito, Cf, Vitale, V, Vovk, I, Will, M, Wunderlich, C, Zaric, D, Bissaldi, E, Bonnoli, G, Cutini, S, D'Ammando, F, Nabizadeh, A, Marchini, A, and Orienti, M
Subjects: Photon, 010504 meteorology & atmospheric sciences, active [Galaxies], Radiation mechanisms: non-thermal, Astrophysics::High Energy Astrophysical Phenomena, galaxies: active, Objects: individual: TXS 1515–273, FOS: Physical sciences, Flux, Astrophysics, 01 natural sciences, 7. Clean energy, law.invention, law, objects: individual: TXS 1515-273, 0103 physical sciences, individual: TXS 1515-273 [Objects], MAGIC (telescope), Blazar, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, non-thermal [Radiation mechanisms], individual: TXS 1515–273 [objects], Gamma ray, Astronomy and Astrophysics, Synchrotron, Crab Nebula, Space and Planetary Science, ddc:520, Spectral energy distribution, Física nuclear, objects: individual: TXS 1515–273, Astrophysics - High Energy Astrophysical Phenomena
Abstract: Full list of authors: Acciari, V. A.; Ansoldi, S.; Antonelli, L. A.; Arbet Engels, A. ; Artero, M.; Asano, K.; Baack, D.; Babić, A.; Baquero, A.; Barres de Almeida, U.; Barrio, J. A.; Batković, I.; Becerra González, J.; Bednarek, W.; Bellizzi, L.; Bernardini, E.; Bernardos, M.; Berti, A.; Besenrieder, J.; Bhattacharyya, W.; Bigongiari, C.; Biland, A.; Blanch, O.; Bošnjak, Ž.; Busetto, G.; Carosi, R.; Ceribella, G.; Cerruti, M.; Chai, Y.; Chilingarian, A.; Cikota, S.; Colak, S. M.; Colombo, E.; Contreras, J. L.; Cortina, J.; Covino, S.; D'Amico, G.; D'Elia, V.; da Vela, P.; Dazzi, F.; de Angelis, A.; de Lotto, B.; Delfino, M.; Delgado, J.; Delgado Mendez, C.; Depaoli, D.; Pierro, F. Di; Venere, L. Di; Do Souto Espiñeira, E.; Dominis Prester, D.; Donini, A.; Dorner, D.; Doro, M.; Elsaesser, D.; Fallah Ramazani, V.; Fattorini, A.; Ferrara, G.; Fonseca, M. V.; Font, L.; Fruck, C.; Fukami, S.; García López, R. J.; Garczarczyk, M.; Gasparyan, S.; Gaug, M.; Giglietto, N.; Giordano, F.; Gliwny, P.; Godinović, N.; Green, J. G.; Green, D.; Hadasch, D.; Hahn, A.; Heckmann, L.; Herrera, J.; Hoang, J.; Hrupec, D.; Hütten, M.; Inada, T.; Inoue, S.; Ishio, K.; Iwamura, Y.; Jiménez, I.; Jormanainen, J.; Jouvin, L.; Kajiwara, Y.; Karjalainen, M.; Kerszberg, D.; Kobayashi, Y.; Kubo, H.; Kushida, J.; Lamastra, A.; Lelas, D.; Leone, F.; Lindfors, E.; Lombardi, S.; Longo, F.; López-Coto, R.; López-Moya, M.; López-Oramas, A.; Loporchio, S.; Machado de Oliveira Fraga, B.; Maggio, C.; Majumdar, P.; Makariev, M.; Mallamaci, M.; Maneva, G.; Manganaro, M.; Mannheim, K.; Maraschi, L.; Mariotti, M.; Martínez, M.; Mazin, D.; Menchiari, S.; Mender, S.; Mićanović, S.; Miceli, D.; Miener, T.; Minev, M.; Miranda, J. M.; Mirzoyan, R.; Molina, E.; Moralejo, A.; Morcuende, D.; Moreno, V.; Moretti, E.; Neustroev, V.; Nigro, C.; Nilsson, K.; Nishijima, K.; Noda, K.; Nozaki, S.; Ohtani, Y.; Oka, T.; Otero-Santos, J.; Paiano, S.; Palatiello, M.; Paneque, D.; Paoletti, R.; Paredes, J. M.; Pavletić, L.; Peñil, P.; Perennes, C.; Persic, M.; Prada Moroni, P. G.; Prandini, E.; Priyadarshi, C.; Puljak, I.; Rhode, W.; Ribó, M.; Rico, J.; Righi, C.; Rugliancich, A.; Saha, L.; Sahakyan, N.; Saito, T.; Sakurai, S.; Satalecka, K.; Saturni, F. G.; Schleicher, B.; Schmidt, K.; Schweizer, T.; Sitarek, J.; Šnidarić, I.; Sobczynska, D.; Spolon, A.; Stamerra, A.; Strom, D.; Strzys, M.; Suda, Y.; Surić, T.; Takahashi, M.; Tavecchio, F.; Temnikov, P.; Terzić, T.; Teshima, M.; Tosti, L.; Truzzi, S.; Tutone, A.; Ubach, S.; van Scherpenberg, J.; Vanzo, G.; Vazquez Acosta, M.; Ventura, S.; Verguilov, V.; Vigorito, C. F.; Vitale, V.; Vovk, I.; Will, M.; Wunderlich, C.; Zarić, D.; Bissaldi, E.; Bonnoli, G.; Cutini, S.; D'Ammando, F.; Nabizadeh, A.; Marchini, A.; Orienti, M.; MAGIC Collaboration., We report here on the first multiwavelength (MWL) campaign on the blazar TXS 1515-273, undertaken in 2019 and extending from radio to very-high-energy gamma-rays (VHE). Up until now, this blazar had not been the subject of any detailed MWL observations. It has a rather hard photon index at GeV energies and was considered a candidate extreme high-synchrotron-peaked source. MAGIC observations resulted in the first-time detection of the source in VHE with a statistical significance of 7.6σ. The average integral VHE flux of the source is 6 ± 1 per cent of the Crab nebula flux above 400 GeV. X-ray coverage was provided by Swift-XRT, XMM-Newton, and NuSTAR. The long continuous X-ray observations were separated by ∼9 h, both showing clear hour scale flares. In the XMM-Newton data, both the rise and decay time-scales are longer in the soft X-ray than in the hard X-ray band, indicating the presence of a particle cooling regime. The X-ray variability time-scales were used to constrain the size of the emission region and the strength of the magnetic field. The data allowed us to determine the synchrotron peak frequency and classify the source as a flaring high, but not extreme synchrotron-peaked object. Considering the constraints and variability patterns from the X-ray data, we model the broad-band spectral energy distribution. We applied a simple one-zone model, which could not reproduce the radio emission and the shape of the optical emission, and a two-component leptonic model with two interacting components, enabling us to reproduce the emission from radio to VHE band. © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society., The financial support of the German BMBF, MPG, and HGF; the Italian INFN and INAF; the Swiss National Fund SNF; the ERDF under the Spanish Ministerio de Ciencia e Innovacion (MICINN) (FPA201787859-P, FPA2017-85668-P, FPA2017-82729-C6-5-R, FPA201790566-REDC, PID2019-104114RB-C31, PID2019-104114RB-C32, PID2019-105510GB-C31, PID2019-107847RB-C41, PID2019107847RB-C42, PID2019-107847RB-C44, PID2019-107988GBC22); the Indian Department of Atomic Energy; the Japanese ICRR, the University of Tokyo, JSPS, and MEXT; the Bulgarian Ministry of Education and Science, National RI Roadmap Project DO1268/16.12.2019 and the Academy of Finland grant nr. 317637 and 320045 are gratefully acknowledged. This work was also supported by the Spanish Centro de Excelencia `Severo Ochoa' SEV-20160588, SEV-2017-0709 and CEX2019-000920-S, and `Maria de Maeztu' CEX2019-000918-M, the Unidad de Excelencia `Maria de Maeztu' MDM-2015-0509-18-2 and the `la Caixa' Foundation (fellowshipLCF/BQ/PI18/11630012), by the Croatian Science Foundation (HrZZ) Project IP-2016-06-9782 and the University of Rijeka Project 13.12.1.3.02, by the DFG Collaborative Research Centers SFB823/C4 and SFB876/C3, the Polish National Research Centre grant UMO-2016/22/M/ST9/00382 and by the Brazilian MCTIC, CNPq, and FAPERJ. The Fermi-LAT Collaboration acknowledges generous ongoing support from a number of agencies and institutes that have supported both the development and the operation of the LAT as well as scientific data analysis. These include the National Aeronautics and Space Administration and the Department of Energy in the United States, theCommissariat à l'Energie Atomique and the Centre National de la Recherche Scientifique/Institut National de Physique Nucleaire et de Physique des Particules in France, the Agenzia Spaziale Italiana and the Istituto Nazionale di Fisica Nucleare in Italy, the Ministry of Education, Culture, Sports, Science and Technology (MEXT), High Energy Accelerator Research Organization (KEK) and Japan Aerospace Exploration Agency (JAXA) in Japan, and the K. A. Wallenberg Foundation, the Swedish Research Council and the Swedish National Space Board in Sweden. Additional support for science analysis during the operations phase from the following agencies is also gratefully acknowledged: the Istituto Nazionale di Astrofisica in Italy and the Centre National d'Etudes Spatiales in France.
Published: 2021
Full Text: View/download PDF

9. MAGIC detection of Geminga: an Inverse Compton tail?

Author: Daniela Dorner, Gaia Vanzo, Louis Antonelli, Giacomo D'Amico, Carolin Wunderlich, Juliane van Scherpenberg, Katsuaki Asano, Mosè Mariotti, Juan Abel Barrio, Petar Temnikov, Jarred Gershon Green, Koji Noda, Serena Loporchio, Narek Sahakyan, Elisa Bernardini, D. Dominis Prester, Jenni Jormanainen, Bernardo Machado de Oliveira Fraga, Maria Victoria Fonseca, Manuel Artero, L. Maraschi, Elina Lindfors, Santiago Ubach, Massimo Persic, Alice Donini, Carlos Delgado Mendez, Daniel Mazin, Alexander Hahn, Marina Manganaro, Saverio Lombardi, Marine Pihet, Nikola Godinovic, Alessio Berti, Ievgen Vovk, Lara Nava, Wrijupan Bhattacharyya, Tomislav Terzić, Andrea Rugliancich, Elena Moretti, Fabrizio Tavecchio, Chiara Righi, Davide Depaoli, Axel Arbet Engels, Eduardo Colombo, Daniel Morcuende, Jose Luis Contreras, Takeshi Nakamori, Jordi Delgado, Giacomo Bonnoli, Tihomir Surić, P. G. Prada Moroni, M. I. Martínez, Pratik Majumdar, Juan Cortina, Barbara De Lotto, Konstancja Satalecka, Markus Garczarczyk, Michele Doro, Marie Karjalainen, Javier Rico, Tokonatsu Yamamoto, Vitaly Neustroev, Josefa González, Chaitanya Priyadarshi, Leonardo Di Venere, Camilla Maggio, Martin Will, Victor A. Acciari, Kevin Schmidt, Lena Linhoff, Karl Mannheim, Stefano Menchiari, Jorge Otero-Santos, John Hoang, Hendrik Bökenkamp, Luca Tosti, Shunsuke Sakurai, Satoshi Fukami, Vandad Fallah Ramazani, Takashi Saito, Stefano Truzzi, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Francesco Dazzi, Michele Palatiello, Alicia López-Oramas, Seiya Nozaki, Josep M. Paredes, Moritz Hütten, Matteo Cerruti, Pablo Peñil, Valerio D'Elia, Stefano Covino, Masahiro Teshima, Dominik Baack, Antonio Stamerra, Junko Kushida, Saša Mićanović, G. Maneva, Lluis Font, Lovro Pavletić, Cosimo Nigro, Ivana Batković, Yasushi Fukazawa, Roberto Carosi, Sofia Ventura, Francesco Longo, Adrian Biland, Kazuma Ishio, Maria-Isabel Bernardos, Ivica Puljak, Sidika Merve Colak, Iva Šnidarić, Monica Vazquez Acosta, Ryuji Takeishi, D. M. Strom, Kari Nilsson, Yukiho Kobayashi, Davide Miceli, Giovanni Ceribella, Julian Sitarek, Yusuke Suda, Elisa Prandini, Marcel Strzys, Simona Paiano, Alessia Spolon, Léa Jouvin, Alicia Fattorini, Christian Fruck, Ramon J. García López, Daniela Hadasch, Sargis Gasparyan, Manuela Mallamaci, Carlo Vigorito, Elia Do Souto Espiñeira, Ashot Chilingarian, Simone Mender, Javier Herrera, Alessandro De Angelis, Wolfgang Rhode, Giovanni Busetto, Yoshiki Ohtani, Manuel Delfino, Ulisses Barres de Almeida, Vassil Verguilov, Lorenzo Bellizzi, Tomohiko Oka, Kyoshi Nishijima, Ana Babić, Daniel Kerszberg, Martin Makariev, Oscar Blanch, Dominik Elsaesser, Razmik Mirzoyan, Tjark Miener, David Paneque, Yuki Iwamura, Yating Chai, Damir Lelas, Stefan Cikota, Pawel Gliwny, Nicola Giglietto, Marc Ribó, Lea Heckmann, Francesco Gabriele Saturni, Jelena Strišković, Victoria Moreno, Darko Zarić, Dorota Sobczyńska, Hidetoshi Kubo, Tomohiro Inada, Zeljka Bosnjak, Andrés Baquero, Thomas Schweizer, Stefano Ansoldi, Riccardo Paoletti, Markus Gaug, Ciro Bigongiari, Abelardo Moralejo, Bernd Schleicher, Edgar Molina, Dario Hrupec, Mitsunari Takahashi, Alessandra Lamastra, Vincenzo Vitale, Francesco Leone, Paolo Da Vela, David H. Green, Marcos López-Moya, Wlodek Bednarek, Federico Di Pierro, Ruben Lopez-Coto, Irene Jiménez Martínez, and Jose Miguel Miranda
Subjects: Physics, Range (particle radiation), Pulsar, Scattering, Astrophysics::High Energy Astrophysical Phenomena, Inverse, MAGIC (telescope), Astrophysics, Radiation, Curvature, Vela
Abstract: We report the detection of pulsed emission from the Geminga pulsar (PSR J0633+1746) with the MAGIC Telescopes. After the Crab and Vela pulsars, Geminga is the third one detected in the very high energy domain, and its estimated age of ~340 ky makes it the oldest one. The spectrum derived by MAGIC extends from ~15 GeV to 75 GeV and can be well modeled with a simple, soft power-law function. For energies below 40 GeV it overlaps with Fermi-LAT measurements. Joint fits to MAGIC and Fermi-LAT data disfavour the existence of a sub-exponential cut-off in this energy range. Our results are discussed in the framework of the outer gap accelerator model. Such power-law emission can be interpreted as the transition from curvature radiation to inverse Compton (IC) scattering of charges accelerated in the northern outer gap. The IC component is expected to continue towards higher energies. The model fails to fit the overall shape of the spectrum, indicating that a major review is required. The MAGIC Telescopes are two IACTs on the Canary Island of La Palma. In recent years they have significantly improved their performance below 100 GeV with the introduction of a novel trigger system, the Sum-Trigger-II, which halves the energy threshold of the system.
Published: 2021
Full Text: View/download PDF

10. MAGIC and H.E.S.S. detect VHE gamma rays from the blazar OT081 for the first time: a deep multiwavelength study

Author: Marina, Manganaro, Monica, Seglar-Arroyo, Josefa, Becerra-Gonz('(a))lez, David, Sanchez, Matteo, Cerruti, Fabrizio, Tavecchio, Vandad, Fallah-Ramazani, Ivan, Agudo, Stefano, Ciprini, Alexei Vladimir Filippenko, Esteban-Gutierrez, A., Talvikki, Hovatta, Helen, Jermak, Jorstad, Svetlana G., Kopatskaya, Evgenia N., Larionov, Valeri M., Larionova, L. V., Anne, Lähteenmäki, Alan, Marscher, Morozova, D. A., Marko, Pahljina, Merja, Tornikoski, Yuliya, Troitskaya, Troitsky, I., Francesco, Verrecchia, Xiao, H. B., Weaver, Z. R., Weikang, Zheng, Acciari, Victor A., Stefano, Ansoldi, Lucio Angelo Antonelli, Axel Arbet Engels, Manuel, Artero, Katsuaki, Asano, Dominik, Baack, Ana, Babic, Andr('(e))s, Baquero, Ulisses Barres de Almeida, Juan Abel Barrio, Ivana, Batkovi('(c)), Josefa Becerra Gonzalez, Wlodek, Bednarek, Lorenzo, Bellizzi, Elisa, Bernardini, Maria-Isabel, Bernardos, Alessio, Berti, Jürgen, Besenrieder, Wrijupan, Bhattacharyya, Ciro, Bigongiari, Adrian, Biland, Oscar, Blanch, Hendrik, Bökenkamp, Giacomo, Bonnoli, Zeljka, Bosnjak, Giovanni, Busetto, Roberto, Carosi, Giovanni, Ceribella, Yating, Chai, Ashot, Chilingarian, Stefan, Cikota, Sidika Merve Colak, Eduardo, Colombo, Jose Luis Contreras, Juan, Cortina, Stefano, Covino, Giacomo D( extquotesingle)Amico, Valerio D( extquotesingle)Elia, Paolo Da Vela, Francesco, Dazzi, Alessandro De Angelis, Barbara De Lotto, Manuel, Delfino, Jordi, Delgado, Carlos Delgado Mendez, Davide, Depaoli, Federico Di Pierro, Leonardo Di Venere, Elia Do Souto Espi(~(n))eira, Dijana Dominis Prester, Alice, Donini, Daniela, Dorner, Michele, Doro, Dominik, Elsaesser, Vandad Fallah Ramazani, Alicia, Fattorini, Maria Victoria Fonseca, Lluis, Font, Christian, Fruck, Satoshi, Fukami, Yasushi, Fukazawa, Garc('(i))a L('(o))pez, Ramon J., Markus, Garczarczyk, Sargis, Gasparyan, Markus, Gaug, Giglietto, Nicola, Francesco, Giordano, Pawel, Gliwny, Nikola, Godinovic, David, Green, Jarred Gershon Green, Daniela, Hadasch, Alexander, Hahn, Lea, Heckmann, Javier, Herrera, John, Hoang, Dario, Hrupec, Moritz, Hütten, Tomohiro, Inada, Kazuma, Ishio, Yuki, Iwamura, Irene Jim('(e))nez Mart('(i))nez, Jenni, Jormanainen, L('(e))a, Jouvin, Marie, Karjalainen, Daniel, Kerszberg, Yukiho, Kobayashi, Hidetoshi, Kubo, Junko, Kushida, Alessandra, Lamastra, Damir, Lelas, Francesco, Leone, Elina, Lindfors, Lena, Linhoff, Saverio, Lombardi, Francesco, Longo, Ruben, Lopez-Coto, Marcos, L('(o))pez-Moya, Alicia, L('(o))pez-Oramas, Loporchio, Serena, Bernardo Machado de Oliveira Fraga, Camilla, Maggio, Pratik, Majumdar, Martin, Makariev, Manuela, Mallamaci, Galina, Maneva, Karl, Mannheim, Laura, Maraschi, Mos(`(e)), Mariotti, Manel, Martinez, Daniel, Mazin, Stefano, Menchiari, Simone, Mender, Sa( (s))a Mi('(c))anovi('(c)), Davide, Miceli, Tjark, Miener, Jose Miguel Miranda, Razmik, Mirzoyan, Edgar, Molina, Abelardo, Moralejo, Daniel, Morcuende, Victoria, Moreno, Elena, Moretti, Takeshi, Nakamori, Lara, Nava, Vitaly, Neustroev, Cosimo, Nigro, Kari, Nilsson, Kyoshi, Nishijima, Koji, Noda, Seiya, Nozaki, Yoshiki, Ohtani, Tomohiko, Oka, Jorge, Otero-Santos, Simona, Paiano, Michele, Palatiello, David, Paneque, Riccardo, Paoletti, Paredes, Josep M., Lovro, Pavleti('(c)), Pablo, Pe(~(n))il, Massimo, Persic, Marine, Pihet, Pier Giorgio Prada Moroni, Elisa, Prandini, Chaitanya, Priyadarshi, Ivica, Puljak, Wolfgang, Rhode, Marc, Rib('(o)), Javier, Rico, Chiara, Righi, Andrea, Rugliancich, Narek, Sahakyan, Takayuki, Saito, Shunsuke, Sakurai, Konstancja, Satalecka, Francesco Gabriele Saturni, Bernd, Schleicher, Kevin, Schmidt, Thomas, Schweizer, Julian, Sitarek, Iva, ( (S))nidari('(c)), Dorota, Sobczy('(n))ska, Alessia, Spolon, Antonio, Stamerra, Jelena Stri( (s))kovi('(c)), Derek, Strom, Marcel, Strzys, Yusuke, Suda, Tihomir, Suri('(c)), Mitsunari, Takahashi, Ryuji, Takeishi, Petar, Temnikov, Tomislav, Terzic, Masahiro, Teshima, Luca, Tosti, Stefano, Truzzi, Antonio, Tutone, Santiago, Ubach, Juliane van Scherpenberg, Gaia, Vanzo, Monica VAZQUEZ ACOSTA, Sofia, Ventura, Vassil, Verguilov, Carlo Francesco Vigorito, Vincenzo, Vitale, Ievgen, Vovk, Martin, Will, Carolin, Wunderlich, Tokonatsu, Yamamoto, Darko, Zari('(c)), and And
Subjects: Physics, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Spectral energy distribution, Quasar, Astrophysics::Cosmology and Extragalactic Astrophysics, MAGIC (telescope), Astrophysics, Emission spectrum, Light curve, Blazar, Astrophysics::Galaxy Astrophysics, Fermi Gamma-ray Space Telescope
Abstract: OT 081 is a luminous blazar well known for its variability in many energy bands. The very-high-energy (VHE; E >100 GeV) gamma-ray emission from the source was discovered by MAGIC and H.E.S.S. during flaring activity in July 2016, after a trigger from the Large Area Telescope (LAT) onboard the Fermi satellite. By analysing the multiwavelength light curves andthe broadband spectral energy distribution (SED), we study the activity of the source and investigate four individual states of activity in the window from MJD 57575 to 57602. The intrinsic gamma-ray spectrum can be described by a power law with spectral indices of 3.27 ± 0.44(MAGIC)and 3.39 ± 0.58(H.E.S.S.) over energy ranges 60–300 GeV and 120–500 GeV, respectively. The combined contemporaneous high-energy (HE;E >100 MeV) through VHE SED shows curvatureand can be described by a log-parabola shape. A simple one-zone synchrotron self-Compton (SSC)model is not sufficient to describe the broadband SED. The presence of broad emission lines in the optical spectrum of the source challenges the categorisation of OT 081 as a BL Lac and, together with the emission scenarios tested, points to the possibility that the source is transitional in nature between a BL Lac and a flat-spectrum radio quasar.
Published: 2021
Full Text: View/download PDF

11. Follow-up observations of GW170817 with the MAGIC telescopes

Author: Antonio Stamerra, Om Sharan Salafia, Alessio Berti, Stefano Covino, Valerio D'Elia, Davide Miceli, Lara Nava, Barbara Patricelli, Chiara Righi, Susumu Inoue, Lucio Angelo Antonelli, Stefano Ansoldi, Barbara De Lotto, Francesco Longo, Fabrizio Tavecchio, Ana Babic, Josefa Becerra Gonzalez, Zeljka Bosnjak, Nikola Godinovic, Ruben Lopez-Coto, Manel Martinez, Tomislav Terzic, Victor A. Acciari, Axel Arbet Engels, Manuel Artero, Katsuaki Asano, Dominik Baack, Ana Babić, Andrés Baquero, Ulisses Barres de Almeida, Juan Abel Barrio, Ivana Batković, Josefa Becerra González, Wlodek Bednarek, Lorenzo Bellizzi, Elisa Bernardini, Maria-Isabel Bernardos, Jürgen Besenrieder, Wrijupan Bhattacharyya, Ciro Bigongiari, Adrian Biland, Oscar Blanch, Hendrik Bökenkamp, Giacomo Bonnoli, Željka Bošnjak, Giovanni Busetto, Roberto Carosi, Giovanni Ceribella, Matteo Cerruti, Yating Chai, Ashot Agassi Chilingarian, Stefan Cikota, Sidika Merve Colak, Eduardo Colombo, Jose Luis Contreras, Juan Cortina, Giacomo D'Amico, Paolo Da Vela, Francesco Dazzi, Alessandro De Angelis, Manuel Delfino, Jordi Delgado, Carlos Delgado Mendez, Davide Depaoli, Federico Di Pierro, Leonardo Di Venere, Elia Do Souto Espiñeira, Dijana Dominis Prester, Alice Donini, Daniela Dorner, Michele Doro, Dominik Elsaesser, Vandad Fallah Ramazani, Alicia Fattorini, Maria Victoria Fonseca, Lluis Font, Christian Fruck, Satoshi Fukami, Yasushi Fukazawa, Ramon J. García López, Markus Garczarczyk, Sargis Gasparyan, Markus Gaug, Nicola Giglietto, Francesco Giordano, Pawel Gliwny, Nikola Godinović, David Green, Jarred Gershon Green, Daniela Hadasch, Alexander Hahn, Lea Heckmann, Javier Herrera, John Hoang, Dario Hrupec, Moritz Hütten, Tomohiro Inada, Kazuma Ishio, Yuki Iwamura, Irene Jiménez Martínez, Jenni Jormanainen, Léa Jouvin, Marie Karjalainen, Daniel Kerszberg, Yukiho Kobayashi, Hidetoshi Kubo, Junko Kushida, Alessandra Lamastra, Damir LELAS, Francesco Leone, Elina Lindfors, Lena Linhoff, Saverio Lombardi, Rubén López-Coto, Marcos López-Moya, Alicia López-Oramas, Serena Loporchio, Bernardo Machado de Oliveira Fraga, Camilla Maggio, Pratik Majumdar, Martin MAKARIEV, Manuela Mallamaci, Galina Maneva, Marina Manganaro, Karl Mannheim, Laura Maraschi, Mosè Mariotti, Manel Martínez, Daniel Mazin, Stefano Menchiari, Simone Mender, Saša Mićanović, Tjark Miener, Jose Miguel Miranda, Razmik Mirzoyan, Edgar Molina, Abelardo Moralejo, Daniel Morcuende, Victoria Moreno, Elena Moretti, Takeshi Nakamori, Vitaly Neustroev, Cosimo Nigro, Kari Nilsson, Kyoshi Nishijima, Koji Noda, Seiya Nozaki, Yoshiki Ohtani, Tomohiko Oka, Jorge Otero-Santos, Simona Paiano, Michele Palatiello, David Paneque, Riccardo Paoletti, Josep M. Paredes, Lovro Pavletić, Pablo Peñil, Massimo Persic, Marine Pihet, Pier Giorgio Prada Moroni, Elisa Prandini, Chaitanya Priyadarshi, Ivica Puljak, Wolfgang Rhode, Marc Ribó, Javier Rico, Andrea Rugliancich, Narek Sahakyan, Takayuki Saito, Shunsuke Sakurai, Konstancja Satalecka, Francesco Gabriele Saturni, Bernd Schleicher, Kevin Schmidt, Thomas Schweizer, Julian Sitarek, Iva Šnidarić, Dorota Sobczyńska, Alessia Spolon, Jelena Strišković, Derek Strom, Marcel C. Strzys, Yusuke Suda, Tihomir Surić, Mitsunari Takahashi, Ryuji Takeishi, Petar Temnikov, Tomislav Terzić, Masahiro Teshima, Luca Tosti, Stefano Truzzi, Antonio Tutone, Santiago Ubach, Juliane van Scherpenberg, Gaia Vanzo, Monica VAZQUEZ ACOSTA, Sofia Ventura, Vassil VERGUILOV, Carlo francesco Vigorito, Vincenzo Vitale, Ievgen Vovk, Martin Will, Carolin Wunderlich, Tokonatsu Yamamoto, and Darko Zarić
Subjects: Physics, Neutron star, Gravitational wave, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, MAGIC (telescope), Maximum flux, Gamma-ray burst
Abstract: The discovery of the electromagnetic counterpart AT2017gfo and the GRB 170817A, associated to the binary neutron star merger GW170817, was one of the major advances in the study of gamma- ray bursts (GRBs) and the hallmark of the multi-messenger astronomy with gravitational waves. Another breakthrough in GRB physics is represented by the discovery of the highly energetic, teraelectronvolt (TeV) component in the GRB 190114C, possibly an universal component in all GRBs. This conclusion is also suggested by the hint of TeV emission in the short GRB 160821B and a few more events reported in the literature. The missing observational piece is the joint detection of TeV emission and gravitational waves from a short GRB and its progenitor. MAGIC observed the counterpart AT2017gfo as soon as the visibility conditions allowed it, namely from January to June 2018. These observations correspond to the maximum flux level observed in the radio and X-ray bands. The upper limits derived from TeV observations are compared with the modelling of the late non-thermal emission using the multi-frequency SED.
Published: 2021
Full Text: View/download PDF

12. Shedding light on the highest energy emission from GRBs with MAGIC observations

Author: Adrian Biland, Chiara Righi, D. Dominis Prester, Jenni Jormanainen, Tomohiko Oka, Tjark Miener, Chaitanya Priyadarshi, Bernardo Machado de Oliveira Fraga, Sargis Gasparyan, Dominik Elsaesser, Razmik Mirzoyan, David Paneque, Wolfgang Rhode, Damir Lelas, Jordi Delgado, Kyoshi Nishijima, Pratik Majumdar, Lea Heckmann, Giovanni Busetto, Daniela Dorner, Francesco Gabriele Saturni, Kevin Schmidt, Jelena Strišković, Dorota Sobczyńska, Zeljka Bosnjak, Yusuke Suda, Satoshi Fukami, Andrés Baquero, Julian Sitarek, Marina Manganaro, Daniela Hadasch, Yoshiki Ohtani, Carlo Vigorito, Martin Will, Junko Kushida, Gaia Vanzo, Ivica Puljak, Jorge Otero-Santos, Lovro Pavletić, Masahiro Teshima, Javier Rico, Tokonatsu Yamamoto, Kazuma Ishio, Seiya Nozaki, Elena Moretti, Ramon J. García López, Francesco Longo, Katsuaki Asano, Ciro Bigongiari, Vitaly Neustroev, Christian Fruck, Lena Linhoff, Daniel Morcuende, Jose Luis Contreras, Serena Loporchio, Wrijupan Bhattacharyya, Konstancja Satalecka, Michele Doro, M. I. Martínez, Santiago Ubach, Luca Tosti, Maria Victoria Fonseca, Juan Cortina, Petar Temnikov, Koji Noda, Juan Abel Barrio, Manuel Artero, Elisa Bernardini, Alexander Hahn, Abelardo Moralejo, Marie Karjalainen, Valerio D'Elia, Elisa Prandini, Narek Sahakyan, Nikola Godinovic, Tomislav Terzić, Louis Antonelli, Marine Pihet, Michele Palatiello, Manuela Mallamaci, Davide Depaoli, Bernd Schleicher, Hendrik Bökenkamp, Carlos Delgado Mendez, Alessandro De Angelis, G. Maneva, Edgar Molina, Carolin Wunderlich, Elia Do Souto Espiñeira, Daniel Kerszberg, Takashi Saito, Alice Donini, Leonardo Di Venere, Iva Šnidarić, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Victor A. Acciari, John Hoang, Dominik Baack, Matteo Cerruti, Ashot Chilingarian, Moritz Hütten, Lara Nava, Yukiho Kobayashi, Fabrizio Tavecchio, Eduardo Colombo, Takeshi Nakamori, Ryuji Takeishi, Barbara De Lotto, Martin Makariev, D. M. Strom, Kari Nilsson, Yuki Iwamura, Camilla Maggio, Mosè Mariotti, Oscar Blanch, Yasushi Fukazawa, Manuel Delfino, Ulisses Barres de Almeida, Ana Babić, Markus Garczarczyk, Saverio Lombardi, Josefa González, Juliane van Scherpenberg, Andrea Rugliancich, Alessandra Lamastra, Ievgen Vovk, Marc Ribó, Stefano Menchiari, Hidetoshi Kubo, Vincenzo Vitale, Tomohiro Inada, Maria-Isabel Bernardos, Francesco Leone, Simona Paiano, Alicia Fattorini, Massimo Persic, Roberto Carosi, Paolo Da Vela, Lluis Font, Giacomo Bonnoli, David H. Green, Davide Miceli, P. G. Prada Moroni, Marcel Strzys, Francesco Dazzi, Alessia Spolon, Léa Jouvin, Simone Mender, Javier Herrera, Marcos López-Moya, Wlodek Bednarek, Federico Di Pierro, Vassil Verguilov, Ruben Lopez-Coto, Irene Jiménez Martínez, Jose Miguel Miranda, Tihomir Surić, Yating Chai, Karl Mannheim, Stefan Cikota, Alicia López-Oramas, Pawel Gliwny, Nicola Giglietto, Cosimo Nigro, Sofia Ventura, Victoria Moreno, Darko Zarić, Alessio Berti, Axel Arbet Engels, Stefano Covino, Giovanni Ceribella, L. Maraschi, Elina Lindfors, Daniel Mazin, Sidika Merve Colak, Monica Vazquez Acosta, Giacomo D'Amico, Lorenzo Bellizzi, Jarred Gershon Green, Vandad Fallah Ramazani, Josep M. Paredes, Antonio Stamerra, Dario Hrupec, Mitsunari Takahashi, Thomas Schweizer, Stefano Ansoldi, Riccardo Paoletti, Markus Gaug, Stefano Truzzi, Pablo Peñil, Saša Mićanović, Ivana Batković, Susume Inoue, and Shunsuke Sakurai
Subjects: Physics, High energy, Experimental proof, Orders of magnitude (time), Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, MAGIC (telescope), Gamma-ray burst, Energy (signal processing), Cherenkov radiation, Afterglow
Abstract: On 14th January 2019, the MAGIC collaboration achieved the first significant detection at TeV energies of a gamma-ray burst (GRB), namely GRB 190114C. This observation sets the first experimental proof of very high energy (VHE, >~100 GeV) gamma-ray emission in GRBs, after more than 50 years from the first GRB detection and many searches with Cherenkov telescopes in the last decades. The data collected by MAGIC and by more than 20 other ground-based and space-borne instruments, spanning 17 orders of magnitude in energy, revealed a new GeV-TeV emission component in the GRB afterglow. This unprecedented multi-wavelength dataset, including VHE data for the first time, allowed a detailed study of the broadband emission. A one-zone synchrotron-self Compton scenario with internal $\gamma$-$\gamma$ absorption could be used to describe the broadband emission, using parameters compatible with those found in previous studies of GRB afterglows below the GeV energy range. This detection opened a new era in the studies of GRBs, leading to new questions such as the universality of TeV emission in different types of GRBs. In this contribution, we will present the GRB follow-up program performed by the MAGIC collaboration, which started more than 15 years ago. We will highlight the results on GRB 190114C, discuss the implications for GRB physics, and report the latest developments and the prospects for future observations of GRBs with the MAGIC telescopes.
Published: 2021
Full Text: View/download PDF

13. Upper limits on the WIMP annihilation cross section from a joint analysis of dwarf spheroidal satellite galaxy observations with the MAGIC telescopes

Author: Maria-Isabel Bernardos, Lena Linhoff, Simona Paiano, Alice Donini, Alicia Fattorini, Takashi Saito, M. I. Martínez, L. Maraschi, Daniela Dorner, Francesco Dazzi, Daniel Kerszberg, Ryuji Takeishi, Elina Lindfors, Lara Nava, Yating Chai, Francesco Longo, Gaia Vanzo, D. M. Strom, Dominik Baack, Dario Hrupec, Stefan Cikota, Pawel Gliwny, Stefano Menchiari, Daniel Mazin, D. Dominis Prester, Kari Nilsson, Nicola Giglietto, Chiara Righi, John Hoang, Mosè Mariotti, Fabrizio Tavecchio, Juliane van Scherpenberg, Yukiho Kobayashi, Mitsunari Takahashi, Eduardo Colombo, Tjark Miener, Ciro Bigongiari, Jenni Jormanainen, Tihomir Surić, Christian Fruck, Javier Rico, Tokonatsu Yamamoto, David Paneque, Victoria Moreno, Vitaly Neustroev, Lluis Font, Elia Do Souto Espiñeira, Darko Zarić, Matteo Cerruti, Bernardo Machado de Oliveira Fraga, Stefano Covino, Petar Temnikov, Jelena Strišković, Chaitanya Priyadarshi, Manuela Mallamaci, Yasushi Fukazawa, Michele Palatiello, Koji Noda, Saverio Lombardi, Marc Ribó, Elisa Bernardini, Marcel Strzys, Alessandro De Angelis, Martin Makariev, Giacomo Bonnoli, Luca Tosti, Andrea Rugliancich, Manuel Delfino, Ievgen Vovk, P. G. Prada Moroni, Satoshi Fukami, Ulisses Barres de Almeida, Oscar Blanch, Markus Garczarczyk, Giovanni Ceribella, Iva Šnidarić, Simone Mender, Javier Herrera, Josefa González, Sargis Gasparyan, Marina Manganaro, Valerio D'Elia, Thomas Schweizer, Hidetoshi Kubo, Tomohiro Inada, Karl Mannheim, Andrés Baquero, Masahiro Teshima, Julian Sitarek, Sidika Merve Colak, Ana Babić, Katsuaki Asano, Elena Moretti, Tomohiko Oka, Louis Antonelli, Konstancja Satalecka, Alexander Hahn, Michele Doro, Abelardo Moralejo, Monica Vazquez Acosta, Daniela Hadasch, Yuki Iwamura, Alicia López-Oramas, Wolfgang Rhode, Stefano Ansoldi, Maria Victoria Fonseca, Giovanni Busetto, Serena Loporchio, Marine Pihet, G. Maneva, Daniel Morcuende, Jose Luis Contreras, Yoshiki Ohtani, Kyoshi Nishijima, Riccardo Paoletti, Markus Gaug, Stefano Truzzi, Kazuma Ishio, Juan Cortina, Santiago Ubach, Nikola Godinovic, Lorenzo Bellizzi, Jordi Delgado, Bernd Schleicher, Takeshi Nakamori, Adrian Biland, Edgar Molina, Marie Karjalainen, Barbara De Lotto, Hendrik Bökenkamp, Vandad Fallah Ramazani, Massimo Persic, Pablo Peñil, Josep M. Paredes, Antonio Stamerra, Camilla Maggio, Kevin Schmidt, Junko Kushida, Lovro Pavletić, Saša Mićanović, Ivana Batković, D. Ninci, Roberto Carosi, Cosimo Nigro, Davide Miceli, Alessia Spolon, Sofia Ventura, Giacomo D'Amico, Léa Jouvin, Carolin Wunderlich, Vassil Verguilov, Shunsuke Sakurai, Jarred Gershon Green, Dominik Elsaesser, Razmik Mirzoyan, Damir Lelas, Lea Heckmann, Francesco Gabriele Saturni, Dorota Sobczyńska, Zeljka Bosnjak, Victor A. Acciari, Ivica Puljak, Moritz Hütten, Marcos López-Moya, Wlodek Bednarek, Federico Di Pierro, Ramon J. García López, Ruben Lopez-Coto, Irene Jiménez Martínez, Wrijupan Bhattacharyya, Jose Miguel Miranda, Alessandra Lamastra, Vincenzo Vitale, Alessio Berti, Pratik Majumdar, Yusuke Suda, Francesco Leone, Paolo Da Vela, Axel Arbet Engels, David H. Green, Martin Will, Jorge Otero-Santos, Carlo Vigorito, Seiya Nozaki, Juan Abel Barrio, Narek Sahakyan, Carlos Delgado Mendez, Davide Depaoli, Leonardo Di Venere, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Manuel Artero, Tomislav Terzić, Elisa Prandini, and Ashot Chilingarian
Subjects: Physics, Annihilation, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Coma (optics), Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Draco (constellation), WIMP, Satellite galaxy, MAGIC (telescope), Astrophysics::Galaxy Astrophysics, Cherenkov radiation
Abstract: Dwarf spheroidal galaxies (dSphs) are among the best candidates to perform indirect searches for DM, having the highest known mass-to-light ratio and being free of astrophysical gamma-ray emitting sources. The Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes, located on the Canary Island of La Palma, have observed a fair amount of optimal dSphs in the recent years. This is the outcome of diversifying the observation strategy in order to avoid possible biases in target selection and to improve previous results. In this contribution we will report on new MAGIC results obtained from 52.1 hours of observation of the Draco dSph in 2018 and 49.5 hours of the Coma Berenices dSph in 2019. We will also present the results of a joint analysis of Draco and Coma Berenices dSphs with other dSphs observed by MAGIC so far. The selected dataset accounts for 354.4 hours of good quality data, resulting in one of the largest dSphs samples ever collected by an array of Cherenkov telescopes. This allows us to derive the most constraining limits from dSphs, among Cherenkov telescopes, on the WIMP annihilation cross section for different annihilation channels in the WIMP mass range 70 GeV to 100 TeV.
Published: 2021
Full Text: View/download PDF

14. Upper limits on the very high energy emission from {GRBs} observed by {MAGIC}

Author: Longo, F., Alessio, Berti, Zeljka, Bosnjak, Alice, Donini, Satoshi, Fukami, Jarred Gershon Green, Davide, Miceli, Elena, Moretti, Lara, Nava, Koji, Noda, Acciari, Victor A., Stefano, Ansoldi, Lucio Angelo Antonelli, Axel Arbet Engels, Manuel, Artero, Katsuaki, Asano, Dominik, Baack, Ana, Babic, Andr('(e))s, Baquero, Ulisses Barres de Almeida, Juan Abel Barrio, Ivana, Batkovi('(c)), Josefa Becerra Gonzalez, Wlodek, Bednarek, Lorenzo, Bellizzi, Elisa, Bernardini, Maria-Isabel, Bernardos, Jürgen, Besenrieder, Wrijupan, Bhattacharyya, Ciro, Bigongiari, Adrian, Biland, Oscar, Blanch, Hendrik, Bökenkamp, Giacomo, Bonnoli, Giovanni, Busetto, Roberto, Carosi, Giovanni, Ceribella, Matteo, Cerruti, Yating, Chai, Ashot, Chilingarian, Stefan, Cikota, Sidika Merve Colak, Eduardo, Colombo, Jose Luis Contreras, Juan, Cortina, Stefano, Covino, Giacomo D( extquotesingle)Amico, Valerio D( extquotesingle)Elia, Paolo Da Vela, Francesco, Dazzi, Alessandro De Angelis, Barbara De Lotto, Manuel, Delfino, Jordi, Delgado, Carlos Delgado Mendez, Davide, Depaoli, Federico Di Pierro, Leonardo Di Venere, Elia Do Souto Espi(~(n))eira, Dijana Dominis Prester, Daniela, Dorner, Michele, Doro, Dominik, Elsaesser, Vandad Fallah Ramazani, Alicia, Fattorini, Maria Victoria Fonseca, Lluis, Font, Christian, Fruck, Yasushi, Fukazawa, Garc('(i))a L('(o))pez, Ramon J., Markus, Garczarczyk, Sargis, Gasparyan, Markus, Gaug, Giglietto, Nicola, Francesco, Giordano, Pawel, Gliwny, Nikola, Godinovic, David, Green, Daniela, Hadasch, Alexander, Hahn, Lea, Heckmann, Javier, Herrera, John, Hoang, Dario, Hrupec, Moritz, Hütten, Tomohiro, Inada, Kazuma, Ishio, Yuki, Iwamura, Irene Jim('(e))nez Mart('(i))nez, Jenni, Jormanainen, L('(e))a, Jouvin, Marie, Karjalainen, Daniel, Kerszberg, Yukiho, Kobayashi, Hidetoshi, Kubo, Junko, Kushida, Alessandra, Lamastra, Damir, Lelas, Francesco, Leone, Elina, Lindfors, Lena, Linhoff, Saverio, Lombardi, Francesco, Longo, Ruben, Lopez-Coto, Marcos, L('(o))pez-Moya, Alicia, L('(o))pez-Oramas, Loporchio, Serena, Bernardo Machado de Oliveira Fraga, Camilla, Maggio, Pratik, Majumdar, Martin, Makariev, Manuela, Mallamaci, Galina, Maneva, Marina, Manganaro, Karl, Mannheim, Laura, Maraschi, Mos(`(e)), Mariotti, Manel, Martinez, Daniel, Mazin, Stefano, Menchiari, Simone, Mender, Sa( (s))a Mi('(c))anovi('(c)), Tjark, Miener, Jose Miguel Miranda, Razmik, Mirzoyan, Edgar, Molina, Abelardo, Moralejo, Daniel, Morcuende, Victoria, Moreno, Takeshi, Nakamori, Vitaly, Neustroev, Cosimo, Nigro, Kari, Nilsson, Kyoshi, Nishijima, Seiya, Nozaki, Yoshiki, Ohtani, Tomohiko, Oka, Jorge, Otero-Santos, Simona, Paiano, Michele, Palatiello, David, Paneque, Riccardo, Paoletti, Paredes, Josep M., Lovro, Pavleti('(c)), Pablo, Pe(~(n))il, Massimo, Persic, Marine, Pihet, Pier Giorgio Prada Moroni, Elisa, Prandini, Chaitanya, Priyadarshi, Ivica, Puljak, Wolfgang, Rhode, Marc, Rib('(o)), Javier, Rico, Chiara, Righi, Andrea, Rugliancich, Narek, Sahakyan, Takayuki, Saito, Shunsuke, Sakurai, Konstancja, Satalecka, Francesco Gabriele Saturni, Bernd, Schleicher, Kevin, Schmidt, Thomas, Schweizer, Julian, Sitarek, Iva, ( (S))nidari('(c)), Dorota, Sobczy('(n))ska, Alessia, Spolon, Antonio, Stamerra, Jelena Stri( (s))kovi('(c)), Derek, Strom, Marcel, Strzys, Yusuke, Suda, Tihomir, Suri('(c)), Mitsunari, Takahashi, Ryuji, Takeishi, Fabrizio, Tavecchio, Petar, Temnikov, Tomislav, Terzic, Masahiro, Teshima, Luca, Tosti, Stefano, Truzzi, Antonio, Tutone, Santiago, Ubach, Juliane van Scherpenberg, Gaia, Vanzo, Monica VAZQUEZ ACOSTA, Sofia, Ventura, Vassil, Verguilov, Carlo Francesco Vigorito, Vincenzo, Vitale, Ievgen, Vovk, Martin, Will, Carolin, Wunderlich, Tokonatsu, Yamamoto, and Darko Zari('(c)) and
Subjects: Physics, High energy, MAGIC (telescope), Astrophysics
Published: 2021

15. Understanding the origin of the extended gamma-ray emission and the physical nature of {HESS} J1841-055 using observations at {TeV} energies with the {MAGIC} telescopes

Author: Jordi Delgado, Marcel Strzys, Kevin Schmidt, Josefa González, Ivica Puljak, Simone Mender, Javier Herrera, Lena Linhoff, Junko Kushida, Lovro Pavletić, Louis Antonelli, Ramon J. García López, Manuela Mallamaci, Vandad Fallah Ramazani, Francesco Longo, Alessandro De Angelis, Stefano Truzzi, Josep M. Paredes, Antonio Stamerra, Julian Sitarek, Pablo Peñil, Katsuaki Asano, Carolin Wunderlich, Stefano Menchiari, Maria Victoria Fonseca, Daniela Hadasch, Kazuma Ishio, Markus Garczarczyk, Elia Do Souto Espiñeira, Lab Saha, Elisa Prandini, Tihomir Surić, Yoshiki Ohtani, Nikola Godinovic, Saša Mićanović, Marcos López-Moya, Ashot Chilingarian, Christian Fruck, Yating Chai, Stefan Cikota, Alexander Hahn, Martin Makariev, Mosè Mariotti, John Hoang, Wlodek Bednarek, Federico Di Pierro, Oscar Blanch, Pawel Gliwny, Marine Pihet, Ivana Batković, Nicola Giglietto, Dominik Elsaesser, Serena Loporchio, Razmik Mirzoyan, Davide Depaoli, Damir Lelas, Tomohiko Oka, D. Dominis Prester, Karl Mannheim, Wrijupan Bhattacharyya, Massimo Persic, Ruben Lopez-Coto, Andrés Baquero, Alice Donini, Kyoshi Nishijima, Victoria Moreno, Jenni Jormanainen, Saverio Lombardi, Darko Zarić, Alicia López-Oramas, Lea Heckmann, Irene Jiménez Martínez, Francesco Gabriele Saturni, Juan Abel Barrio, Thomas Schweizer, Francesco Dazzi, Dorota Sobczyńska, Zeljka Bosnjak, Tjark Miener, David Paneque, Bernardo Machado de Oliveira Fraga, Lara Nava, Andrea Rugliancich, Victor A. Acciari, Maria-Isabel Bernardos, Narek Sahakyan, Stefano Ansoldi, Jose Miguel Miranda, Riccardo Paoletti, Fabrizio Tavecchio, Moritz Hütten, Markus Gaug, Ciro Bigongiari, Eduardo Colombo, Cosimo Nigro, Jelena Strišković, Marina Manganaro, Sofia Ventura, Leonardo Di Venere, Lorenzo Bellizzi, Abelardo Moralejo, Sargis Gasparyan, Marie Karjalainen, Carlos Delgado Mendez, Wolfgang Rhode, Giovanni Busetto, Simona Paiano, Alicia Fattorini, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Alessandra Lamastra, Elena Moretti, Bernd Schleicher, Giacomo Bonnoli, Edgar Molina, P. G. Prada Moroni, Konstancja Satalecka, M. I. Martínez, Alessio Berti, Vincenzo Vitale, Daniel Morcuende, Jose Luis Contreras, Michele Doro, Axel Arbet Engels, Shunsuke Sakurai, Juan Cortina, Sidika Merve Colak, Michele Palatiello, Monica Vazquez Acosta, Yuki Iwamura, Pratik Majumdar, Hendrik Bökenkamp, Francesco Leone, Martin Will, Jorge Otero-Santos, Iva Šnidarić, Yusuke Suda, Seiya Nozaki, Ryuji Takeishi, D. M. Strom, Kari Nilsson, Paolo Da Vela, Carlo Vigorito, David H. Green, Takashi Saito, Manuel Delfino, Ulisses Barres de Almeida, Dominik Baack, Yukiho Kobayashi, Ana Babić, Manuel Artero, Tomislav Terzić, Roberto Carosi, Davide Miceli, Alessia Spolon, Léa Jouvin, Vassil Verguilov, Daniel Kerszberg, Marc Ribó, Hidetoshi Kubo, Tomohiro Inada, Adrian Biland, Javier Rico, Tokonatsu Yamamoto, Vitaly Neustroev, Luca Tosti, Valerio D'Elia, G. Maneva, Daniela Dorner, Gaia Vanzo, Petar Temnikov, Koji Noda, Elisa Bernardini, Takeshi Nakamori, Barbara De Lotto, Camilla Maggio, Satoshi Fukami, Masahiro Teshima, Chiara Righi, Chaitanya Priyadarshi, Santiago Ubach, Giacomo D'Amico, Jarred Gershon Green, Dario Hrupec, Mitsunari Takahashi, Stefano Covino, Giovanni Ceribella, L. Maraschi, Elina Lindfors, Daniel Mazin, Matteo Cerruti, Yasushi Fukazawa, Juliane van Scherpenberg, Ievgen Vovk, and Lluis Font
Subjects: Physics, Wavelength, Previous generation, High energy, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, MAGIC (telescope), Astrophysics
Abstract: With the improved sensitivity with respect to the previous generation, current space-borne and ground-based gamma-ray telescopes have made the number of γ-ray sources detected at GeV- TeV energies increase many folds over the last decade. Many of the detected extended gamma-ray sources are not associated with any known sources at other wavelengths. Understanding the nature of these sources and the origin of the observed high energy gamma-ray emission remains a great challenge. Using the MAGIC telescopes, we have observed one such unassociated gamma-ray source, named HESS J1841-055 at TeV energies. We investigate the physical nature and origin of the γ-ray emission from this extended source. In this paper, we present the results of our detailed investigation on this source using MAGIC data and other multi-waveband information on nearby sources. The results included in this proceeding and shown in this presentation were published in ref. [1]. The details about the analysis, interpretation and modelling can be found in the aforementioned reference.
Published: 2021

16. Very-high-energy gamma-ray emission from {GRB} 201216C detected by {MAGIC}

Author: Ramon J. García López, Marie Karjalainen, Alessio Berti, Takeshi Nakamori, Manuel Artero, Dominik Elsaesser, Razmik Mirzoyan, Damir Lelas, Barbara De Lotto, Lea Heckmann, Francesco Gabriele Saturni, Dorota Sobczyńska, Axel Arbet Engels, Manuel Delfino, Ulisses Barres de Almeida, Javier Rico, Tokonatsu Yamamoto, Camilla Maggio, Lorenzo Bellizzi, Lena Linhoff, Alice Donini, Juliane van Scherpenberg, Tomislav Terzić, Stefano Covino, Tihomir Surić, Dario Hrupec, D. Dominis Prester, Vitaly Neustroev, Daniela Dorner, Gaia Vanzo, Stefano Menchiari, Davide Depaoli, Mitsunari Takahashi, Pratik Majumdar, Kazuma Ishio, Luca Tosti, Chiara Righi, Ana Babić, Lara Nava, Martin Will, Jenni Jormanainen, Roberto Carosi, M. I. Martínez, Ciro Bigongiari, Valerio D'Elia, Alessandra Lamastra, Karl Mannheim, Katsuaki Asano, Yating Chai, Vincenzo Vitale, Jorge Otero-Santos, Francesco Longo, Shunsuke Sakurai, Petar Temnikov, Daniel Kerszberg, Fabrizio Tavecchio, Matteo Cerruti, Elisa Prandini, Bernardo Machado de Oliveira Fraga, G. Maneva, Chaitanya Priyadarshi, Stefan Cikota, Pawel Gliwny, Manuela Mallamaci, Nicola Giglietto, Eduardo Colombo, Seiya Nozaki, Koji Noda, Giovanni Ceribella, Elisa Bernardini, Daniel Morcuende, Jose Luis Contreras, Leonardo Di Venere, Alicia López-Oramas, Alessandro De Angelis, Maria Victoria Fonseca, Tjark Miener, Abelardo Moralejo, Sargis Gasparyan, Juan Cortina, Marc Ribó, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Yasushi Fukazawa, Victoria Moreno, David Paneque, Nikola Godinovic, Massimo Persic, Wolfgang Rhode, Francesco Leone, Giovanni Busetto, Adrian Biland, Santiago Ubach, Juan Abel Barrio, Narek Sahakyan, Elia Do Souto Espiñeira, Stefano Truzzi, Pablo Peñil, Ashot Chilingarian, Hidetoshi Kubo, Tomohiro Inada, Giacomo Bonnoli, Serena Loporchio, Hendrik Bökenkamp, Takashi Saito, Josefa González, John Hoang, Davide Miceli, Tomohiko Oka, Cosimo Nigro, Carlos Delgado Mendez, Lluis Font, Saša Mićanović, Ivana Batković, Dominik Baack, Satoshi Fukami, Bernd Schleicher, P. G. Prada Moroni, Jelena Strišković, Kyoshi Nishijima, Maria-Isabel Bernardos, Edgar Molina, Yukiho Kobayashi, Martin Makariev, Oscar Blanch, Yusuke Suda, Thomas Schweizer, Sofia Ventura, Marcos López-Moya, Ryuji Takeishi, Christian Fruck, L. Maraschi, Elina Lindfors, Stefano Ansoldi, Wlodek Bednarek, Federico Di Pierro, D. M. Strom, Kari Nilsson, Marcel Strzys, Carlo Vigorito, Masahiro Teshima, Alessia Spolon, Léa Jouvin, Vassil Verguilov, Riccardo Paoletti, Daniel Mazin, Simone Mender, Javier Herrera, Markus Gaug, Ievgen Vovk, Alexander Hahn, Giacomo D'Amico, Ruben Lopez-Coto, Andrés Baquero, Francesco Dazzi, Jordi Delgado, Vandad Fallah Ramazani, Josep M. Paredes, Jarred Gershon Green, Marina Manganaro, Marine Pihet, Yuki Iwamura, Antonio Stamerra, Ž. Bošnjak, Markus Garczarczyk, Irene Jiménez Martínez, Elena Moretti, Simona Paiano, Kevin Schmidt, Konstancja Satalecka, Michele Doro, Alicia Fattorini, Jose Miguel Miranda, Michele Palatiello, Junko Kushida, Lovro Pavletić, Paolo Da Vela, Iva Šnidarić, Julian Sitarek, David H. Green, Daniela Hadasch, Yoshiki Ohtani, Louis Antonelli, Carolin Wunderlich, Victor A. Acciari, Moritz Hütten, Wrijupan Bhattacharyya, Darko Zarić, Mosè Mariotti, Saverio Lombardi, Sidika Merve Colak, Monica Vazquez Acosta, Andrea Rugliancich, and Ivica Puljak
Subjects: Physics, High energy, Range (particle radiation), Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Astrophysics, MAGIC (telescope), Electron, Astrophysics::Cosmology and Extragalactic Astrophysics, Gamma-ray burst, Redshift
Abstract: Gamma-ray bursts (GRBs) are the most energetic phenomena in the Universe. Many aspects of GRB physics are still under debate, such as the origin of their gamma-ray emission above the GeV energy range. In 2019, MAGIC detected TeV gamma rays from the long GRB 190114C, whose emission can be well explained by synchrotron-self Compton emission by relativistic electrons. However, it is still unclear whether such a process is common in GRBs, given the reduced number of GRBs detected until now at the very high energies (VHE). GRB 201216C is a long GRB and is the second one detected by MAGIC in this energy range. After receiving the alert provided by Swift-BAT, MAGIC automatically slewed to the GRB position, starting observations 56 seconds after the GRB onset. In the offline analyses of the collected data, we confirmed the detection of gamma-ray emission with a significance above 5 sigma. Following measurements from optical facilities, the redshift of this GRB was estimated to be 𝑧� = 1.1. This makes GRB 201216C the most distant object ever detected by ground-based gamma-ray telescopes. In this contribution we will show the analysis results of the MAGIC data, also in comparison with past detected GRBs in the same energy range. Finally, accounting for available multi-wavelength observations, we will comment on the possible origin of the VHE emission detected by MAGIC., PoS: Proceedings of Science, 395, ISSN:1824-8039, 37th International Cosmic Ray Conference (ICRC 2021)
Published: 2021

17. Discovery of TXS 1515-273 at VHE gamma-rays and modelling of its Spectral Energy Distribution

Author: Daniel Kerszberg, Marie Karjalainen, Katsuaki Asano, Alexander Hahn, Davide Depaoli, Tomohiko Oka, Monica Orienti, Sara Cutini, Daniel Morcuende, Maria Victoria Fonseca, Marc Ribó, Jose Luis Contreras, Marine Pihet, Kyoshi Nishijima, Juan Cortina, Nikola Godinovic, Abelardo Moralejo, Hidetoshi Kubo, Tomohiro Inada, Tihomir Surić, Pratik Majumdar, Leonardo Di Venere, Jürgen Besenrieder, Hendrik Bökenkamp, Martin Will, Jorge Otero-Santos, Francesco Giordano, Antonio Tutone, Seiya Nozaki, Dominik Elsaesser, Juan Abel Barrio, Stefano Covino, Stefano Menchiari, Lena Linhoff, Davide Miceli, Dario Hrupec, Mitsunari Takahashi, Narek Sahakyan, Razmik Mirzoyan, Damir Lelas, Lluis Font, Lea Heckmann, Alessia Spolon, Léa Jouvin, Matteo Cerruti, Satoshi Fukami, Carlos Delgado Mendez, Alice Donini, Karl Mannheim, D. Dominis Prester, Bernd Schleicher, Edgar Molina, Jordi Delgado, Takeshi Nakamori, Jenni Jormanainen, Francesco Gabriele Saturni, Manuel Delfino, Ulisses Barres de Almeida, Dorota Sobczyńska, Zeljka Bosnjak, Armin Nabizadeh, Maria-Isabel Bernardos, Giovanni Ceribella, Vassil Verguilov, Bernardo Machado de Oliveira Fraga, Marcel Strzys, Simone Mender, Javier Herrera, Yusuke Suda, Barbara De Lotto, Kevin Schmidt, Yasushi Fukazawa, Alicia López-Oramas, John Hoang, Carlo Vigorito, Camilla Maggio, Daniela Dorner, Lara Nava, Ana Babić, Sidika Merve Colak, Gaia Vanzo, Elisabetta Bissaldi, Ivica Puljak, Ciro Bigongiari, Manuela Mallamaci, Simona Paiano, Thomas Schweizer, Fabrizio Tavecchio, Monica Vazquez Acosta, Eduardo Colombo, Sargis Gasparyan, Junko Kushida, Alessio Berti, Ievgen Vovk, Ramon J. García López, Ryuji Takeishi, D. M. Strom, Stefano Ansoldi, Masahiro Teshima, Alicia Fattorini, Manuel Artero, Riccardo Paoletti, Markus Gaug, Lovro Pavletić, L. Maraschi, Kari Nilsson, Marcos López-Moya, Axel Arbet Engels, M. I. Martínez, Elina Lindfors, Vandad Fallah Ramazani, Josep M. Paredes, Daniel Mazin, Tomislav Terzić, Julian Sitarek, Antonio Stamerra, Francesco Longo, Massimo Persic, Giacomo D'Amico, Daniela Hadasch, Francesco Dazzi, Roberto Carosi, Wolfgang Rhode, Giovanni Busetto, Serena Loporchio, Lorenzo Bellizzi, Cosimo Nigro, Yoshiki Ohtani, Wlodek Bednarek, Federico Di Pierro, Ruben Lopez-Coto, Sofia Ventura, Elia Do Souto Espiñeira, Jarred Gershon Green, Juliane van Scherpenberg, Irene Jiménez Martínez, F. D'Ammando, Andrés Baquero, Jose Miguel Miranda, Martin Makariev, Yating Chai, Oscar Blanch, Paolo Da Vela, Giacomo Bonnoli, Stefan Cikota, Pawel Gliwny, Nicola Giglietto, David H. Green, P. G. Prada Moroni, Victoria Moreno, Darko Zarić, Santiago Ubach, Shunsuke Sakurai, Alessandra Lamastra, Vincenzo Vitale, Francesco Leone, Stefano Truzzi, Pablo Peñil, Saša Mićanović, Mosè Mariotti, Ivana Batković, Chiara Righi, Chaitanya Priyadarshi, Adrian Biland, Saverio Lombardi, Andrea Rugliancich, Javier Rico, Tokonatsu Yamamoto, Vitaly Neustroev, Luca Tosti, Valerio D'Elia, G. Maneva, Victor A. Acciari, Moritz Hütten, Kazuma Ishio, Wrijupan Bhattacharyya, Elisa Prandini, Louis Antonelli, Carolin Wunderlich, Ashot Chilingarian, Josefa González, Takashi Saito, Dominik Baack, Yukiho Kobayashi, Christian Fruck, Yuki Iwamura, Markus Garczarczyk, Michele Palatiello, Iva Šnidarić, Tjark Miener, David Paneque, Jelena Strišković, Marina Manganaro, Elena Moretti, Konstancja Satalecka, Michele Doro, Petar Temnikov, Koji Noda, Elisa Bernardini, and Alessandro De Angelis
Subjects: Physics, law, Astrophysics::High Energy Astrophysical Phenomena, Broadband, Gamma ray, Spectral energy distribution, Astrophysics, MAGIC (telescope), Peak location, Blazar, Synchrotron, law.invention
Abstract: In February 2019, a flaring state of the extreme blazar candidate TXS 1515-273 was registered by the Fermi-LAT, which triggered observations with the MAGIC telescopes and the X-ray satellites Swift, XMM-Newton and NuStar. The observations led to the discovery of the source at very-high-energy (VHE, 100 GeV < E < $ 100 TeV) gamma-ray energies and the detection of short time scales of variability (1 h) in several X-ray bands. The analysis of the observed variability helped us to constrain the physical parameters of the emission region. Thanks to the high-quality X-ray data, the synchrotron peak location was determined. The source was classified as a high synchrotron peaked source during the flaring activity. We constructed the broadband spectral energy distribution from radio to TeV. We interpreted it assuming leptonic emission and taking into account the constraints from the X-ray variability. We tested two scenarios: a simple one-zone model and a two-component model. Both models were found to describe the data well from X-ray to VHE gamma ray, but the two-zone model allows for a more accurate modelling of the emission at radio and optical energies.
Published: 2021

18. Protons Spectrum from {MAGIC} Telescopes data

Author: Javier Rico, Tokonatsu Yamamoto, Serena Loporchio, Lorenzo Bellizzi, Vitaly Neustroev, Daniela Dorner, Ivica Puljak, Chiara Righi, Alessandra Lamastra, Alice Donini, Takashi Saito, Lara Nava, Fabrizio Tavecchio, Eduardo Colombo, Davide Depaoli, Luca Tosti, Vincenzo Vitale, Gaia Vanzo, Ryuji Takeishi, D. M. Strom, Lena Linhoff, Dominik Baack, Kari Nilsson, Valerio D'Elia, Kazuma Ishio, Ciro Bigongiari, Jordi Delgado, Wrijupan Bhattacharyya, Ramon J. García López, Stefano Menchiari, Stefano Covino, Leonardo Di Venere, G. Maneva, Francesco Leone, Chaitanya Priyadarshi, Ž. Bošnjak, Yukiho Kobayashi, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Daniel Morcuende, Jose Luis Contreras, Thomas Schweizer, Kevin Schmidt, Juan Abel Barrio, Manuela Mallamaci, Juan Cortina, Lluis Font, Stefano Ansoldi, Riccardo Paoletti, Markus Gaug, Alessandro De Angelis, Giacomo D'Amico, Paolo Da Vela, Adrian Biland, David H. Green, Giovanni Ceribella, Narek Sahakyan, Petar Temnikov, Koji Noda, Sidika Merve Colak, Elisa Bernardini, Hendrik Bökenkamp, Shunsuke Sakurai, Dominik Elsaesser, Satoshi Fukami, Razmik Mirzoyan, Roberto Carosi, Alexander Hahn, Monica Vazquez Acosta, Marcel Strzys, M. I. Martínez, Elisa Prandini, Daniel Kerszberg, Victor A. Acciari, Damir Lelas, Junko Kushida, Tomohiko Oka, Simone Mender, Manuel Artero, Lovro Pavletić, Javier Herrera, Andrés Baquero, Carlos Delgado Mendez, Marine Pihet, Lea Heckmann, Francesco Gabriele Saturni, Vandad Fallah Ramazani, Cosimo Nigro, Josep M. Paredes, L. Maraschi, Yuki Iwamura, Tomislav Terzić, Elina Lindfors, Kyoshi Nishijima, Manuel Delfino, Ulisses Barres de Almeida, Daniel Mazin, Moritz Hütten, Jarred Gershon Green, Yating Chai, Stefano Truzzi, D. Dominis Prester, Dorota Sobczyńska, Masahiro Teshima, Antonio Stamerra, Sofia Ventura, Abelardo Moralejo, Pablo Peñil, Stefan Cikota, Ana Babić, Pawel Gliwny, Nicola Giglietto, Julian Sitarek, Ashot Chilingarian, Josefa González, Yusuke Suda, Marcos López-Moya, Christian Fruck, Jenni Jormanainen, Victoria Moreno, Francesco Longo, Daniela Hadasch, Wlodek Bednarek, Marc Ribó, Federico Di Pierro, Carlo Vigorito, Maria-Isabel Bernardos, Louis Antonelli, Ruben Lopez-Coto, Pratik Majumdar, Bernardo Machado de Oliveira Fraga, Saša Mićanović, Darko Zarić, Ivana Batković, Giacomo Bonnoli, Yoshiki Ohtani, Santiago Ubach, Massimo Persic, Irene Jiménez Martínez, P. G. Prada Moroni, Marie Karjalainen, Bernd Schleicher, Carolin Wunderlich, Alessio Berti, Martin Will, Hidetoshi Kubo, Tomohiro Inada, Simona Paiano, Edgar Molina, Alicia Fattorini, Davide Miceli, Jorge Otero-Santos, Axel Arbet Engels, Dario Hrupec, Seiya Nozaki, Tihomir Surić, Francesco Dazzi, Alessia Spolon, Mitsunari Takahashi, Léa Jouvin, Elia Do Souto Espiñeira, Sargis Gasparyan, Markus Garczarczyk, Mosè Mariotti, Karl Mannheim, Vassil Verguilov, Wolfgang Rhode, Giovanni Busetto, Alicia López-Oramas, Martin Makariev, Saverio Lombardi, Oscar Blanch, Andrea Rugliancich, Katsuaki Asano, Maria Victoria Fonseca, Nikola Godinovic, John Hoang, Michele Palatiello, Matteo Cerruti, Iva Šnidarić, Marina Manganaro, Yasushi Fukazawa, Elena Moretti, Ievgen Vovk, Takeshi Nakamori, Konstancja Satalecka, Barbara De Lotto, Camilla Maggio, Michele Doro, Tjark Miener, David Paneque, Jelena Strišković, Juliane van Scherpenberg, and Jose Miguel Miranda
Subjects: Physics, COSMIC cancer database, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Astronomy, Cosmic ray, MAGIC (telescope), Nuclear Experiment, Proton energy, Cherenkov radiation, Spectral line
Abstract: Imaging Atmospheric Cherenkov telescopes (IACTs) are designed to detect cosmic gamma rays. As a by-product, IACTs detect Cherenkov flashes generated by millions of hadronic air showers every night. We present the proton energy spectrum from several hundred GeV to several hundred TeV, retrieved from the hadron induced showers detected by the MAGIC telescopes. The protons are discriminated from He and other heavy nuclei by means of using machine learning classification. The energy estimation is based on a specially developed deep neural network regressor. In the last decade, Deep Learning methods gained much interest in the scientific community for their ability to extract complex relations in data and process large datasets in a short time. The proton energy spectrum obtained in this work is compared to the spectra obtained by dedicated cosmic ray experiments.
Published: 2021

19. Analysis of the W 44 Supernova Remnant and its surroundings with Fermi-{LAT} and {MAGIC}

Author: Leonardo Di Venere, Riccardo Di Tria, Francesco, Giordano, David, Green, Alexander, Hahn, Pantaleo, Francesca Romana, Marcel, Strzys, Acciari, Victor A., Stefano, Ansoldi, Lucio Angelo Antonelli, Axel Arbet Engels, Manuel, Artero, Katsuaki, Asano, Dominik, Baack, Ana, Babic, Andr('(e))s, Baquero, Ulisses Barres de Almeida, Juan Abel Barrio, Ivana, Batkovi('(c)), Josefa Becerra Gonzalez, Wlodek, Bednarek, Lorenzo, Bellizzi, Elisa, Bernardini, Maria-Isabel, Bernardos, Alessio, Berti, Jürgen, Besenrieder, Wrijupan, Bhattacharyya, Ciro, Bigongiari, Adrian, Biland, Oscar, Blanch, Hendrik, Bökenkamp, Giacomo, Bonnoli, Zeljka, Bosnjak, Giovanni, Busetto, Roberto, Carosi, Giovanni, Ceribella, Matteo, Cerruti, Yating, Chai, Ashot, Chilingarian, Stefan, Cikota, Sidika Merve Colak, Eduardo, Colombo, Jose Luis Contreras, Juan, Cortina, Stefano, Covino, Giacomo D( extquotesingle)Amico, Valerio D( extquotesingle)Elia, Paolo Da Vela, Francesco, Dazzi, Alessandro De Angelis, Barbara De Lotto, Manuel, Delfino, Jordi, Delgado, Carlos Delgado Mendez, Davide, Depaoli, Federico Di Pierro, Elia Do Souto Espi(~(n))eira, Dijana Dominis Prester, Alice, Donini, Daniela, Dorner, Michele, Doro, Dominik, Elsaesser, Vandad Fallah Ramazani, Alicia, Fattorini, Maria Victoria Fonseca, Lluis, Font, Christian, Fruck, Satoshi, Fukami, Yasushi, Fukazawa, Garc('(i))a L('(o))pez, Ramon J., Markus, Garczarczyk, Sargis, Gasparyan, Markus, Gaug, Giglietto, Nicola, Pawel, Gliwny, Nikola, Godinovic, Jarred Gershon Green, Daniela, Hadasch, Lea, Heckmann, Javier, Herrera, John, Hoang, Dario, Hrupec, Moritz, Hütten, Tomohiro, Inada, Kazuma, Ishio, Yuki, Iwamura, Irene Jim('(e))nez Mart('(i))nez, Jenni, Jormanainen, L('(e))a, Jouvin, Marie, Karjalainen, Daniel, Kerszberg, Yukiho, Kobayashi, Hidetoshi, Kubo, Junko, Kushida, Alessandra, Lamastra, Damir, Lelas, Francesco, Leone, Elina, Lindfors, Lena, Linhoff, Saverio, Lombardi, Francesco, Longo, Ruben, Lopez-Coto, Marcos, L('(o))pez-Moya, Alicia, L('(o))pez-Oramas, Loporchio, Serena, Bernardo Machado de Oliveira Fraga, Camilla, Maggio, Pratik, Majumdar, Martin, Makariev, Manuela, Mallamaci, Galina, Maneva, Marina, Manganaro, Karl, Mannheim, Laura, Maraschi, Mos(`(e)), Mariotti, Manel, Martinez, Daniel, Mazin, Stefano, Menchiari, Simone, Mender, Sa( (s))a Mi('(c))anovi('(c)), Davide, Miceli, Tjark, Miener, Jose Miguel Miranda, Razmik, Mirzoyan, Edgar, Molina, Abelardo, Moralejo, Daniel, Morcuende, Victoria, Moreno, Elena, Moretti, Takeshi, Nakamori, Lara, Nava, Vitaly, Neustroev, Cosimo, Nigro, Kari, Nilsson, Kyoshi, Nishijima, Koji, Noda, Seiya, Nozaki, Yoshiki, Ohtani, Tomohiko, Oka, Jorge, Otero-Santos, Simona, Paiano, Michele, Palatiello, David, Paneque, Riccardo, Paoletti, Paredes, Josep M., Lovro, Pavleti('(c)), Pablo, Pe(~(n))il, Massimo, Persic, Marine, Pihet, Pier Giorgio Prada Moroni, Elisa, Prandini, Chaitanya, Priyadarshi, Ivica, Puljak, Wolfgang, Rhode, Marc, Rib('(o)), Javier, Rico, Chiara, Righi, Andrea, Rugliancich, Narek, Sahakyan, Takayuki, Saito, Shunsuke, Sakurai, Konstancja, Satalecka, Francesco Gabriele Saturni, Bernd, Schleicher, Kevin, Schmidt, Thomas, Schweizer, Julian, Sitarek, Iva, ( (S))nidari('(c)), Dorota, Sobczy('(n))ska, Alessia, Spolon, Antonio, Stamerra, Jelena Stri( (s))kovi('(c)), Derek, Strom, Yusuke, Suda, Tihomir, Suri('(c)), Mitsunari, Takahashi, Ryuji, Takeishi, Fabrizio, Tavecchio, Petar, Temnikov, Tomislav, Terzic, Masahiro, Teshima, Luca, Tosti, Stefano, Truzzi, Antonio, Tutone, Santiago, Ubach, Juliane van Scherpenberg, Gaia, Vanzo, Monica VAZQUEZ ACOSTA, Sofia, Ventura, Vassil, Verguilov, Carlo Francesco Vigorito, Vincenzo, Vitale, Ievgen, Vovk, Martin, Will, Carolin, Wunderlich, Tokonatsu, Yamamoto, Darko, Zari('(c)), and And
Subjects: Physics, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Angular resolution, Cosmic ray, MAGIC (telescope), Astrophysics, Diffusion (business), Supernova remnant, Spectral line, Fermi Gamma-ray Space Telescope
Abstract: The well-known supernova remnant (SNR) W 44 is observed in high-energy gamma rays and widely studied to investigate cosmic ray (CR) acceleration. Several analyses of the W 44 surroundings showed the presence of gamma-ray emission offset from the radio SNR shell. This emission is thought to originate from escaped high-energy CRs. We present a detailed analysis of the W 44 region as seen by Fermi-LAT, focusing on the spatial and spectral characteristics of both W44 SNR and its surroundings. The spatial analysis was limited to energies above 1 GeV in order to exploit the improved angular resolution of the instrument, deriving a detailed description of the region morphology. Observations of the north-western region of W 44, also known as SRC-1 from previous works, were conducted with the MAGIC telescopes in the very high-energy gamma-ray band. We analysed MAGIC data exploiting the spatial information derived with the Fermi-LAT analysis at GeV energies. Here we show the results of both analyses and the combined Fermi-LAT and MAGIC spectra, thus obtaining constraining information on the diffusion of the escaped CRs.
Published: 2021

20. H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016

Author: A. Yusafzai, J. van Scherpenberg, M. Büchele, B. Boccardi, S. Caroff, S. J. Fegan, Daniela Dorner, T. Schweizer, Mosè Mariotti, Gaia Vanzo, Tom Armstrong, Nu. Komin, Pratik Majumdar, M. V. Fonseca, Matteo Cerruti, A. Lemiere, F. Eichhorn, J. Devin, C. Trichard, Michael Punch, Stefano Gabici, M. Palatiello, V. A. Acciari, F. Schüssler, Sylvia Zhu, P. J. Meintjes, Werner Hofmann, Samuel Timothy Spencer, Y. Kajiwara, J. Zorn, D. Dominis Prester, S. Bonnefoy, Constantin Steppa, G. Maurin, Adrian Biland, J. M. Paredes, Antonio Stamerra, U. Barres de Almeida, Tadayuki Takahashi, Damir Lelas, Victor Doroshenko, Davide Depaoli, Dmitriy Kostunin, R. Mirzoyan, T. Surić, D. Gottschall, M. Füßling, Moritz Hütten, Lea Heckmann, M. Gaug, J. Herrera, Ullrich Schwanke, C. Arcaro, H. Abdalla, Lorenzo Bellizzi, Thomas P. Krichbaum, Francesco Dazzi, John Hoang, Martin Will, Dominik Baack, L. Maraschi, Elina Lindfors, M. A. Kastendieck, R. Rauth, V. Baghmanyan, D. Ninci, Koji Noda, Michael Backes, S. Raab, Sanae Inoue, Giacomo D'Amico, Manuel Meyer, Q. Remy, L. Olivera-Nieto, Dorota Sobczyńska, Elisa Bernardini, M. Filipovic, Riaan Steenkamp, Davit Zargaryan, Hambeleleni Ndiyavala, Stefan Klepser, G. Vasileiadis, G. Lamanna, S. G. Jorstad, Daniel Mazin, Jacek Niemiec, Kirsty Feijen, Alessandro Montanari, Tim Holch, Seiya Nozaki, Anna Barnacka, M. Hörbe, Giacomo Bonnoli, D. Strom, T. Tavernier, Takeshi Oka, Axel Donath, J. Rico, A. W. Chen, J. Dyks, T. Chand, Jim Hinton, F. Niederwanger, Olaf Reimer, Daniel Kerszberg, Manuel Delfino, Krzysztof Katarzynski, Ivica Puljak, S. Sailer, Dmitry Khangulyan, Christian Fruck, Gavin Rowell, D. A. Sanchez, Maria Haupt, Julian Sitarek, Alan P. Marscher, Stefano Truzzi, Pablo Peñil, E. O. Angüner, Catherine Boisson, S. Ventura, Dieter Horns, M. Bryan, V. Barbosa Martins, L. Sun, Rachel Simoni, Gerard Fontaine, Jacco Vink, P. Reichherzer, Jim Davies, G. Hermann, Regis Terrier, Clemens Hoischen, A. A. Zdziarski, G. Ferrara, Francois Brun, G. Emery, M. de Bony de Lavergne, P. Vincent, Kyoshi Nishijima, Alessandra Lamastra, G. Fichet de Clairfontaine, E. de Oña Wilhelmi, P. Munar-Adrover, Yoshiki Ohtani, Carlo Romoli, Jordi Delgado, Wrijupan Bhattacharyya, L. Di Venere, D. Zarić, Zorawar Wadiasingh, F. Di Pierro, Ž. Bošnjak, Hester Schutte, Isak Delberth Davids, Roberta Zanin, Karl Mannheim, M. Strzys, Łukasz Stawarz, R. J. Tuffs, V. Fallah Ramazani, B. Bi, Marc Ribó, Sabrina Casanova, H. Prokoph, A. Carosi, Stefano Covino, D. J. van der Walt, Thomas Murach, Yating Chai, Saša Mićanović, Jae-Young Kim, V. Vitale, Francesco Longo, R. Konno, Alicia Fattorini, Narek Sahakyan, Y. A. Gallant, R. J. García López, Junko Kushida, Jürgen Besenrieder, Dario Hrupec, P. Da Vela, S. Steinmassl, P. G. Prada Moroni, Jonathan Mackey, Rafal Moderski, Stefan Cikota, Hidetoshi Kubo, Armelle Jardin-Blicq, Monica Barnard, J. Otero-Santos, Mischa Breuhaus, J. Becerra González, Yu. W. Wong, V. Joshi, Samuel Zouari, N. Shafi, Natalia Żywucka, E. Prandini, M. A. Lopez, Gianluca Giavitto, Katsuaki Asano, Mitsunari Takahashi, T. Vuillaume, M. Curyło, P. Morris, K. Egberts, Stefano Ansoldi, M. de Naurois, Pawel Gliwny, L. Pavletić, C. Moore, Alessia Spolon, M. Vazquez Acosta, D. Elsaesser, Tomoki Saito, Giovanni Ceribella, Riccardo Paoletti, Celine Armand, Jhilik Majumdar, Stefan Ohm, G. Busetto, Léa Jouvin, Ana Babić, Frank M. Rieger, A. Dmytriiev, Dorit Glawion, Z. R. Weaver, Włodek Kluźniak, S. Chandra, V. Marandon, A. Djannati-Ataï, E. Moulin, Tomasz Bulik, Alessio Berti, M. Seglar-Arroyo, H. Odaka, Christian Stegmann, Stefan Wagner, C. Perennes, Pierre Brun, Yasunobu Uchiyama, A. Fiasson, U. Colin, David A. Green, Kazuma Ishio, A. Arbet Engels, A. De Angelis, Wlodek Bednarek, Nikola Godinovic, F. Ait Benkhali, Vassil Verguilov, Camilla Maggio, L. Mohrmann, Jean-Pierre Ernenwein, M. Spir-Jacob, M. Karjalainen, Vitaly Neustroev, P. deWilt, M. Scalici, Victoria Moreno, A. Priyana Noel, A. López-Oramas, M. Lemoine-Goumard, N. Torres-Albà, Martin Makariev, C. van Rensburg, Oscar Blanch, S. Pita, Alexander Hahn, V. Sahakian, Yusuke Suda, S. Schwemmer, Thomas Lohse, Misao Sasaki, Daniel Morcuende, Johannes Veh, D. Jankowsky, Michael Kreter, D. Berge, Luca Tosti, R. Marx, F. Werner, V. Poireau, Andrea Santangelo, C. Nigro, Andreas Quirrenbach, Jose Luis Contreras, E. Ruiz-Velasco, Thomas Bylund, M. Tluczykont, V. D'Elia, A. S. Seyffert, Jose Miguel Miranda, Massimo Persic, L. Dirson, Efthalia Traianou, Carlo Vigorito, Sargis Gasparyan, Y. Kobayashi, Jacques Muller, Jeffrey A. Hodgson, Marek Jamrozy, Christoph Deil, I. Jung-Richardt, Joachim Hahn, Mohanraj Senniappan, A. Rugliancich, Marina Manganaro, K. Nakashima, Kleopas Shiningayamwe, Alice Donini, Michelle Tsirou, Yuki Iwamura, G. Maneva, L. A. Antonelli, Juan Cortina, Markus Holler, Michal Ostrowski, Wolfgang Rhode, L. Rinchiuso, Felix Jankowsky, Sebastian Panny, M. I. Martínez, Michael Zacharias, Ferdinando Giordano, Felix Aharonian, Lluis Font, J.-P. Lenain, Merja Tornikoski, B. Machado de Oliveira Fraga, M.-H. Grondin, Lenka Tomankova, Markus Böttcher, Alison Mitchell, Chiara Righi, E. Do Souto Espiñeira, Tomislav Terzić, Alexandre Marcowith, P. Temnikov, Helene Sol, Sabrina Einecke, Iryna Lypova, Toshiaki Inada, Rodolfo Carosi, R. D. Parsons, Yvonne Becherini, Shunsuke Sakurai, L. Giunti, A. Nayerhoda, Arnaud Mares, Chaitanya Priyadarshi, Satoshi Fukami, Konstancja Satalecka, Stefan Funk, Johan Bregeon, Sidika Merve Colak, Alicja Wierzcholska, R. J. White, F. Leone, Michele Doro, D. Huber, Carolina Casadio, Anne Lähteenmäki, Masahiro Teshima, Domenico Tiziani, D. Malyshev, M. Panter, U. Katz, Heinrich J. Völk, G. Martí-Devesa, C. Levy, M. Renaud, J. A. Barrio, Kai Phillip Schmidt, L. Oakes, N. Giglietto, Simone Mender, Paolo Marchegiani, Ashot Chilingarian, Tjark Miener, James E. M. Watson, David Paneque, J. Bolmont, Manuela Mallamaci, Halim Ashkar, A. Sinha, Fabrizio Tavecchio, Kari Nilsson, B. van Soelen, B. Rudak, R. Adam, D. Miceli, M. Mohamed, Saverio Lombardi, E. Molina, P. T. O'Brien, E. Colombo, Lab Saha, Luca Foffano, C. van Eldik, G. Peron, Garret Cotter, D. Hadasch, D. A. Prokhorov, K. Kosack, Konrad Bernlöhr, B. Peyaud, I. Vovk, G. Pühlhofer, A. Reimer, J. F. Glicenstein, Bruno Khelifi, Serena Loporchio, I. Snidaric, Abelardo Moralejo, Andreas Specovius, E. Moretti, Bernd Schleicher, M. Minev, B. De Lotto, Andrés Baquero, A.M. Taylor, J. Damascene Mbarubucyeye, Christo Venter, Ciro Bigongiari, A. Zech, M. Garczarczyk, R. López-Coto, Q. Piel, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Laboratoire Univers et Particules de Montpellier (LUPM), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), H.E.S.S., MAGIC, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), German Research Foundation, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Astrofisica, Swiss National Science Foundation, Ministerio de Economía y Competitividad (España), Department of Atomic Energy (India), Academy of Finland, University of Tokyo, La Caixa, Croatian Science Foundation, University of Rijeka, Polish National Agency for Academic Exchange, Abdalla, H., Adam, R., Aharonian, F., Ait Benkhali, F., Ang??ner, E. O., Arcaro, C., Armand, C., Armstrong, T., Ashkar, H., Backes, M., Baghmanyan, V., Barbosa Martins, V., Barnacka, A., Barnard, M., Becherini, Y., Berge, D., Bernl??hr, K., Bi, B., B??ttcher, M., Boisson, C., Bolmont, J., Bonnefoy, S., de Bony de Lavergne, M., Bregeon, J., Breuhaus, M., Brun, F., Brun, P., Bryan, M., B??chele, M., Bulik, T., Bylund, T., Caroff, S., Carosi, A., Casanova, S., Chand, T., Chandra, S., Chen, A., Cotter, G., Cury??o, M., Damascene Mbarubucyeye, J., Davids, I. D., Davies, J., Deil, C., Devin, J., Dewilt, P., Dirson, L., Djannati-Ata??, A., Dmytriiev, A., Donath, A., Doroshenko, V., Dyks, J., Egberts, K., Eichhorn, F., Einecke, S., Emery, G., Ernenwein, J. -P., Feijen, K., Fegan, S., Fiasson, A., Fichet de Clairfontaine, G., Filipovic, M., Fontaine, G., Funk, S., F????ling, M., Gabici, S., Gallant, Y. A., Giavitto, G., Giunti, L., Glawion, D., Glicenstein, J. F., Gottschall, D., Grondin, M. -H., Hahn, J., Haupt, M., Hermann, G., Hinton, J. A., Hofmann, W., Hoischen, C., Holch, T. L., Holler, M., H??rbe, M., Horns, D., Huber, D., Jamrozy, M., Jankowsky, D., Jankowsky, F., Jardin-Blicq, A., Joshi, V., Jung-Richardt, I., Kastendieck, M. A., Katarzy??ski, K., Katz, U., Khangulyan, D., Kh??lifi, B., Klepser, S., Klu??niak, W., Komin, Nu., Konno, R., Kosack, K., Kostunin, D., Kreter, M., Lamanna, G., Lemi??re, A., Lemoine-Goumard, M., Lenain, J. -P., Levy, C., Lohse, T., Lypova, I., Mackey, J., Majumdar, J., Malyshev, D., Marandon, V., Marchegiani, P., Marcowith, A., Mares, A., Mart??-Devesa, G., Marx, R., Maurin, G., Meintjes, P. J., Meyer, M., Mitchell, A. M. W., Moderski, R., Mohamed, M., Mohrmann, L., Montanari, A., Moore, C., Morris, P., Moulin, E., Muller, J., Murach, T., Nakashima, K., Nayerhoda, A., de Naurois, M., Ndiyavala, H., Niederwanger, F., Niemiec, J., Oakes, L., O???brien, P., Odaka, H., Ohm, S., Olivera-Nieto, L., de Ona Wilhelmi, E., Ostrowski, M., Panter, M., Panny, S., Parsons, R. D., Peron, G., Peyaud, B., Piel, Q., Pita, S., Poireau, V., Priyana Noel, A., Prokhorov, D. A., Prokoph, H., P??hlhofer, G., Punch, M., Quirrenbach, A., Raab, S., Rauth, R., Reichherzer, P., Reimer, A., Reimer, O., Remy, Q., Renaud, M., Rieger, F., Rinchiuso, L., Romoli, C., Rowell, G., Rudak, B., Ruiz-Velasco, E., Sahakian, V., Sailer, S., Sanchez, D. A., Santangelo, A., Sasaki, M., Scalici, M., Sch??ssler, F., Schutte, H. M., Schwanke, U., Schwemmer, S., Seglar-Arroyo, M., Senniappan, M., Seyffert, A. S., Shafi, N., Shiningayamwe, K., Simoni, R., Sinha, A., Sol, H., Specovius, A., Spencer, S., Spir-Jacob, M., Stawarz, ??., Sun, L., Steenkamp, R., Stegmann, C., Steinmassl, S., Steppa, C., Takahashi, T., Tavernier, T., Taylor, A. M., Terrier, R., Tiziani, D., Tluczykont, M., Tomankova, L., Trichard, C., Tsirou, M., Tuffs, R., Uchiyama, Y., van der Walt, D. J., van Eldik, C., van Rensburg, C., van Soelen, B., Vasileiadis, G., Veh, J., Venter, C., Vincent, P., Vink, J., V??lk, H. J., Vuillaume, T., Wadiasingh, Z., Wagner, S. J., Watson, J., Werner, F., White, R., Wierzcholska, A., Wong, Yu. W., Yusafzai, A., Zacharias, M., Zanin, R., Zargaryan, D., Zdziarski, A. A., Zech, A., Zhu, S. J., Zorn, J., Zouari, S., ywucka, N., Acciari, V. A., Ansoldi, S., Antonelli, L. A., Arbet Engels, A., Asano, K., Baack, D., Babi??, A., Baquero, A., Barres de Almeida, U., Barrio, J. A., Becerra Gonz??lez, J., Bednarek, W., Bellizzi, L., Bernardini, E., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Bo??njak, ??., Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingarian, A., Cikota, S., Colak, S. M., Colin, U., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D???amico, G., D???elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Depaoli, D., Di Pierro, F., Di Venere, L., Do Souto Espi??eira, E., Dominis Prester, D., Donini, A., Dorner, D., Doro, M., Elsaesser, D., Fallah Ramazani, V., Fattorini, A., Ferrara, G., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., Garc??a L??pez, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Gliwny, P., Godinovi??, N., Green, D., Hadasch, D., Hahn, A., Heckmann, L., Herrera, J., Hoang, J., Hrupec, D., H??tten, M., Inada, T., Inoue, S., Ishio, K., Iwamura, Y., Jouvin, L., Kajiwara, Y., Karjalainen, M., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., L??pez, M., L??pez-Coto, R., L??pez-Oramas, A., Loporchio, S., Machado de Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Mart??nez, M., Mazin, D., Mender, S., Mi??anovi??, S., Miceli, D., Miener, T., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Munar-Adrover, P., Neustroev, V., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nozaki, S., Ohtani, Y., Oka, T., Otero-Santos, J., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavleti??, L., Pe??il, P., Perennes, C., Persic, M., Prada Moroni, P. G., Prandini, E., Priyadarshi, C., Puljak, I., Rhode, W., Rib??, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Schleicher, B., Schmidt, K., Schweizer, T., Sitarek, J., nidari??, I., Sobczynska, D., Spolon, A., Stamerra, A., Strom, D., Strzys, M., Suda, Y., Suri??, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzi??, T., Teshima, M., Torres-Alb??, N., Tosti, L., Truzzi, S., van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Ventura, S., Verguilov, V., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Zari??, D., Jorstad, S. G., Marscher, A. P., Boccardi, B., Casadio, C., Hodgson, J., Kim, J. -Y., Krichbaum, T. P., L??hteenm??ki, A., Tornikoski, M., Traianou, E., Weaver, Z. R., Gravitation and Astroparticle Physics Amsterdam, High Energy Astrophys. & Astropart. Phys (API, FNWI), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), Department of Electronics and Nanoengineering, Aalto-yliopisto, and Aalto University
Subjects: non-thermal, quasars: individual: PKS 1510−089, galaxies: active, relativistic processes, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies [radiation mechanisms], Photon, individual: PKS 1510−089 [quasars], Astrophysics::High Energy Astrophysical Phenomena, Flux, radiation mechanisms: non-thermal / quasars: individual: PKS 1510−089 / galaxies: active / relativistic processes, radiation mechanisms: non-thermal, quasars: individual: PKS 1510-089, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, law, 0103 physical sciences, Galaxies: Active, Quasars: Individual: Pks 1510-089, Radiation mechanisms: Non-thermal, Relativistic processes, individual: PKS 1510-089 [quasars], MAGIC (telescope), 010303 astronomy & astrophysics, Physics, [PHYS]Physics [physics], 010308 nuclear & particles physics, Astronomy and Astrophysics, Quasar, Light curve, non-thermal [radiation mechanisms], relativistic processes [radiation mechanisms], Extragalactic background light, Space and Planetary Science, active [galaxies], ddc:520, Física nuclear, quasars: individual: PKS 1510��089, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Fermi Gamma-ray Space Telescope, Flare
Abstract: The flat spectrum radio quasar (FSRQ) PKS 1510−089 is known for its complex multiwavelength behaviour and it is one of only a few FSRQs detected in very-high-energy (VHE, E > 100 GeV) γ rays. The VHE γ-ray observations with H.E.S.S. and MAGIC in late May and early June 2016 resulted in the detection of an unprecedented flare, which revealed, for the first time, VHE γ-ray intranight variability for this source. While a common variability timescale of 1.5 h has been found, there is a significant deviation near the end of the flare, with a timescale of ∼20 min marking the cessation of the event. The peak flux is nearly two orders of magnitude above the low-level emission. For the first time, a curvature was detected in the VHE γ-ray spectrum of PKS 1510–089, which can be fully explained by the absorption on the part of the extragalactic background light. Optical R-band observations with ATOM revealed a counterpart of the γ-ray flare, even though the detailed flux evolution differs from the VHE γ-ray light curve. Interestingly, a steep flux decrease was observed at the same time as the cessation of the VHE γ-ray flare. In the high-energy (HE, E > 100 MeV) γ-ray band, only a moderate flux increase was observed with Fermi-LAT, while the HE γ-ray spectrum significantly hardens up to a photon index of 1.6. A search for broad-line region (BLR) absorption features in the γ-ray spectrum indicates that the emission region is located outside of the BLR. Radio very-long-baseline interferometry observations reveal a fast-moving knot interacting with a standing jet feature around the time of the flare. As the standing feature is located ∼50 pc from the black hole, the emission region of the flare may have been located at a significant distance from the black hole. If this is indeed a true correlation, the VHE γ rays must have been produced far down in the jet, where turbulent plasma crosses a standing shock., Astronomy & Astrophysics, 648, ISSN:0004-6361, ISSN:1432-0746
Published: 2021
Full Text: View/download PDF

21. Study of the variable broadband emission of Markarian 501 during the most extreme Swift X-ray activity

Author: Francesco Longo, Yuki Iwamura, Susumu Inoue, L. Nogués, M. I. Martínez, G. Pedaletti, Thomas Bretz, J. Buss, A. Rugliancich, Marina Manganaro, D. Galindo, Merja Tornikoski, Sabrina Einecke, Martin Makariev, Oscar Blanch, C. Leto, Ciro Bigongiari, Adrian Biland, D. Zarić, Andrii Neronov, M. Garczarczyk, Sargis Gasparyan, Konstancja Satalecka, Michele Doro, Marc Ribó, M. Noethe, J. Becerra González, Kazuma Ishio, J. Rico, Christian Fruck, Kyoshi Nishijima, Abelardo Moralejo, E. Moretti, Wolfgang Rhode, Christoph Wendel, Dominik Baack, Satoshi Masuda, Hidetoshi Kubo, Nikola Godinovic, B. Machado de Oliveira Fraga, Alexander Hahn, Manuel Delfino, Daniela Dorner, P. Giammaria, A. Niedzwiecki, Alessio Berti, U. Barres de Almeida, F. Verrecchia, G. Busetto, Lena Linhoff, D. Fidalgo, Damir Lelas, G. Ferrara, Alicia Fattorini, D. Hildebrand, David Paneque, V. A. Acciari, Bernd Schleicher, Gaia Vanzo, M. Peresano, Rodolfo Carosi, M. Perri, Alessandra Lamastra, John Hoang, Marcel Strzys, M. Gaug, Chiara Righi, M. Armas Padilla, D. Ninci, Ana Babić, Michael Blank, Dorota Sobczyńska, D. Dominis Prester, A. De Angelis, Vitaly Neustroev, I. Snidaric, F. Schulz, E. von Willert, D. Guberman, A. Y. Lien, J. Herrera, Juan Abel Barrio, B. Banerjee, J. van Scherpenberg, V. D'Elia, Narek Sahakyan, P. Temnikov, Stefano Ansoldi, R. J. García López, G. Maneva, E. Do Souto Espiñera, B. De Lotto, Elisa Bernardini, Riccardo Paoletti, S. Paiano, Karl Mannheim, Pablo Peñil, A. Shukla, Ivica Puljak, Jose Luis Contreras, D. Neise, Andrea Tramacere, Manuela Mallamaci, A. López-Oramas, Jordi Delgado, V. Fallah Ramazani, Juan Cortina, J. Palacio, P. Colin, R. Walter, J. M. Paredes, F. Di Pierro, Antonio Stamerra, Pratik Majumdar, Camilla Maggio, M. V. Fonseca, Ievgen Vovk, Francesco Dazzi, A. Fernández-Barral, Cosimo Nigro, P. Munar-Adrover, Massimo Persic, Dario Hrupec, L. A. Antonelli, Martin Will, D. Kuveždić, T. Schweizer, F. Leone, Anne Lähteenmäki, Tarek M. Hassan, Fabrizio Tavecchio, Masahiro Teshima, A. Somero, Kari Nilsson, Ll. Font, M. Bulinski, Wlodek Bednarek, Vitalii Sliusar, P. G. Prada Moroni, Junko Kushida, P. Da Vela, E. Prandini, N. Torres-Albà, Joni Tammi, Sebastian Achim Mueller, J. R. Garcia, Giacomo Bonnoli, Manuel Doerr, Stefano Gallozzi, Jose Miguel Miranda, Wrijupan Bhattacharyya, Julian Sitarek, T. Surić, Shimpei Tsujimoto, K. Bruegge, D. Elsaesser, Tomislav Terzić, Jürgen Besenrieder, E. Molina, E. Colombo, Lab Saha, Luca Foffano, Mosè Mariotti, A. Paravac, Saverio Lombardi, M. Nievas Rosillo, M. Minev, M. Balbo, D. Hadasch, R. Mirzoyan, A. Arbet-Engels, K. Sedlaczek, L. Maraschi, Elina Lindfors, Daniel Mazin, Stefan Cikota, M. Vazquez Acosta, Victoria Moreno, Stefano Covino, Tomoki Saito, Giovanni Ceribella, Aaron Dominguez, K. Noda, Sidika Merve Colak, M. López, German Research Foundation, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Astrofisica, Swiss National Science Foundation, Japan Society for the Promotion of Science, Ministry of Education, Culture, Sports, Science and Technology (Japan), Croatian Science Foundation, University of Rijeka, Polish National Agency for Academic Exchange, Ministério da Ciência, Tecnologia e Inovação (Brasil), National Aeronautics and Space Administration (US), Department of Energy (US), Commissariat à l'Ènergie Atomique et aux Ènergies Alternatives (France), Centre National de la Recherche Scientifique (France), Institut National de Physique Nucléaire et de Physique des Particules (France), Agenzia Spaziale Italiana, High Energy Accelerator Research Organization (Japan), Japan Aerospace Exploration Agency, Knut and Alice Wallenberg Foundation, Swedish Research Council, Swedish National Space Board, Acciari, V. A., Ansoldi, S., Antonelli, L. A., Babic, A., Banerjee, B., Barres De Almeida, U., Barrio, J. A., Becerra Gonzalez, J., Bednarek, W., Bernardini, E., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Blanch, O., Bonnoli, G., Busetto, G., Carosi, R., Ceribella, G., Cikota, S., Colak, S. M., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., DI Pierro, F., Do Souto Espinera, E., Dominguez, A., Dominis Prester, D., Doro, M., Fallah Ramazani, V., Fattorini, A., Fernandez-Barral, A., Ferrara, G., Fidalgo, D., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Galindo, D., Gallozzi, S., Garcia Lopez, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giammaria, P., Godinovic, N., Guberman, D., Hadasch, D., Hahn, A., Hassan, T., Herrera, J., Hoang, J., Hrupec, D., Inoue, S., Ishio, K., Iwamura, Y., Kubo, H., Kushida, J., Kuvecdic, D., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., Lopez, M., Lopez-Oramas, A., MacHado De Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Maraschi, L., Mariotti, M., Martinez, M., Masuda, S., Mazin, D., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Moreno, V., Moretti, E., Munar-Adrover, P., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogues, L., Paiano, S., Palacio, J., Paneque, D., Paoletti, R., Paredes, J. M., Pedaletti, G., Penil, P., Peresano, M., Persic, M., Prada Moroni, P. G., Prandini, E., Puljak, I., Garcia, J. R., Ribo, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Satalecka, K., Schweizer, T., Sitarek, J., Snidaric, I., Sobczynska, D., Somero, A., Stamerra, A., Strzys, M., Suric, T., Tavecchio, F., Temnikov, P., Terzic, T., Teshima, M., Torres-Alba, N., Tsujimoto, S., Van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Vovk, I., Will, M., Zaric, D., Arbet-Engels, A., Baack, D., Balbo, M., Biland, A., Blank, M., Bretz, T., Bruegge, K., Bulinski, M., Buss, J., Doerr, M., Dorner, D., Einecke, S., Elsaesser, D., Hildebrand, D., Linhoff, L., Mannheim, K., Mueller, S., Neise, D., Neronov, A., Noethe, M., Paravac, A., Rhode, W., Schleicher, B., Schulz, F., Sedlaczek, K., Shukla, A., Sliusar, V., Von Willert, E., Walter, R., Wendel, C., Tramacere, A., Lien, A., Perri, M., Verrecchia, F., Armas Padilla, M., Leto, C., Lahteenmaki, A., Tornikoski, M., Tammi, J., Department of Electronics and Nanoengineering, Metsähovi Radio Observatory, Aalto-yliopisto, and Aalto University
Subjects: galaxies: active, BL Lacertae objects: individual: Mrk 501, gamma rays: galaxies, X-rays: galaxies, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Flux, Context (language use), Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Power law, Spectral line, Galaxies: active, Gamma rays: galaxies, individual: Mrk 501 [BL Lacertae objects], 0103 physical sciences, MAGIC (telescope), Blazar, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, galaxie [Gamma rays], 010308 nuclear & particles physics, Gamma ray, Astronomy and Astrophysics, galaxies [X-rays], Crab Nebula, Space and Planetary Science, active [galaxies], galaxies [gamma rays], ddc:520, Física nuclear, High Energy Astrophysical Phenomena, Astrophysics - High Energy Astrophysical Phenomena
Abstract: [Context] Markarian 501 (Mrk 501) is a very high-energy (VHE) gamma-ray blazar located at z = 0:034, which is regularly monitored by a wide range of multi-wavelength instruments, from radio to VHE gamma rays. During a period of almost two weeks in July 2014, the highest X-ray activity of Mrk 501 was observed in -14 years of operation of the Neil Gehrels Swift Gamma-ray Burst Observatory., [Aims] We characterize the broadband variability of Mrk 501 from radio to VHE gamma rays during the most extreme X-ray activity measured in the last 14 years, and evaluate whether it can be interpreted within theoretical scenarios widely used to explain the broadband emission from blazars., [Methods] The emission of Mrk 501 was measured at radio with Metsähovi, at optical–UV with KVA and Swift/UVOT, at X-ray with Swift/XRT and Swift/BAT, at gamma ray with Fermi-LAT, and at VHE gamma rays with the FACT and MAGIC telescopes. The multi-band variability and correlations were quantified, and the broadband spectral energy distributions (SEDs) were compared with predictions from theoretical models., [Results] The VHE emission of Mrk 501 was found to be elevated during the X-ray outburst, with a gamma-ray flux above 0.15 TeV varying from ∼0.5 to ∼2 times the Crab nebula flux. The X-ray and VHE emission both varied on timescales of 1 day and were found to be correlated. We measured a general increase in the fractional variability with energy, with the VHE variability being twice as large as the X-ray variability. The temporal evolution of the most prominent and variable segments of the SED, characterized on a day-by-day basis from 2014 July 16 to 2014 July 31, is described with a one-zone synchrotron self-Compton model with variations in the break energy of the electron energy distribution (EED), and with some adjustments in the magnetic field strength and spectral shape of the EED. These results suggest that the main flux variations during this extreme X-ray outburst are produced by the acceleration and the cooling of the high-energy electrons. A narrow feature at ∼3 TeV was observed in the VHE spectrum measured on 2014 July 19 (MJD 56857.98), which is the day with the highest X-ray flux (>0.3 keV) measured during the entire Swift mission. This feature is inconsistent with the classical analytic functions to describe the measured VHE spectra (power law, log-parabola, and log-parabola with exponential cutoff) at more than 3σ. A fit with a log-parabola plus a narrow component is preferred over the fit with a single log-parabola at more than 4σ, and a dedicated Monte Carlo simulation estimated the significance of this extra component to be larger than 3σ. Under the assumption that this VHE spectral feature is real, we show that it can be reproduced with three distinct theoretical scenarios: (a) a pileup in the EED due to stochastic acceleration; (b) a structured jet with two-SSC emitting regions, with one region dominated by an extremely narrow EED; and (c) an emission from an IC pair cascade induced by electrons accelerated in a magnetospheric vacuum gap, in addition to the SSC emission from a more conventional region along the jet of Mrk 501., The financial support of the German BMBF and MPG, the Italian INFN and INAF, the Swiss National Fund SNF, the ERDF under the Spanish MINECO (FPA2015-69818-P, FPA2012-36668, FPA2015-68378-P, FPA2015-69210-C6-2-R, FPA2015-69210-C6-4-R, FPA2015-69210-C6-6-R, AYA2015-71042-P, AYA2016-76012-C3-1-P, ESP2015-71662-C2-2-P, FPA2017-90566-REDC), and the Japanese JSPS and MEXT is gratefully acknowledged. This work was also supported by the Spanish Centro de Excelencia “Severo Ochoa” SEV-2016-0588 and SEV-2015-0548, and Unidad de Excelencia “María de Maeztu” MDM-2014-0369, by the Croatian Science Foundation (HrZZ) Project IP-2016-06-9782 and the University of Rijeka Project 13.12.1.3.02, by the DFG Collaborative Research Centers SFB823/C4 and SFB876/C3, the Polish National Research Centre grant UMO-2016/22/M/ST9/00382 and by the Brazilian MCTIC, CNPq and FAPERJ. The Fermi-LAT Collaboration acknowledges generous ongoing support from a number of agencies and institutes that have supported both the development and the operation of the LAT as well as scientific data analysis. These include the National Aeronautics and Space Administration and the Department of Energy in the United States, the Commissariat à l’Energie Atomique and the Centre National de la Recherche Scientifique/Institut National de Physique Nucléaire et de Physique des Particules in France, the Agenzia Spaziale Italiana and the Istituto Nazionale di Fisica Nucleare in Italy, the Ministry of Education, Culture, Sports, Science and Technology (MEXT), High Energy Accelerator Research Organization (KEK) and Japan Aerospace Exploration Agency (JAXA) in Japan, and the K. A. Wallenberg Foundation, the Swedish Research Council and the Swedish National Space Board in Sweden. Additional support for science analysis during the operations phase is gratefully acknowledged from the Instituto Nazionale di Astrofisica in Italy and the Centre National d’Études Spatiales in France. The important contributions from ETH Zurich grants ETH-10.08-2 and ETH-27.12-1 as well as the funding by the Swiss SNF and the German BMBF (Ver-bundforschung Astro-und Astroteilchenphysik) and HAP (Helmoltz Alliance for Astroparticle Physics) are gratefully acknowledged. Part of this work is supported by Deutsche Forschungsgemeinschaft (DFG) within the Collaborative Research Center SFB 876, project C3. We thank the Instituto de Astrofisica de Canarias for allowing us to operate the telescope at the Observatorio del Roque de los Muchachos in La Palma, the Max-Planck-Institut fur Physik for providing us with the mount of the former HEGRA CT3 telescope, and the MAGIC Collaboration for their support. JBG acknowledges the support of the Viera y Clavijo program funded by ACIISI and ULL. C. W. is grateful for the support by the project “Promotion inklusive” of the Universität zu Köln and the German Bundesmin-isterium für Arbeit und Soziales. This publication makes use of data obtained at Metsähovi Radio Observatory, operated by Aalto University, Finland.
Published: 2020
Full Text: View/download PDF

22. Testing emission models on the extreme blazar 2WHSP J073326.7+515354 detected at very high energies with the MAGIC telescopes

Author: Adrian Biland, J. Becerra González, J. Rico, Satoshi Fukami, Alessandra Lamastra, D. Mazin, G. Busetto, L. Di Venere, Alessio Berti, F. Leone, Neustroev, Kazuma Ishio, R. Mirzoyan, Rodolfo Carosi, Mosè Mariotti, Masahiro Teshima, Manuela Mallamaci, Sargis Gasparyan, Léa Jouvin, John Hoang, Cosimo Nigro, F. D'Ammando, A. Somero, Wolfgang Rhode, L. Nogués, A. Arbet Engels, Juan Abel Barrio, M. Minev, D. Dominis Prester, Giacomo Bonnoli, Stefano Covino, A. López-Oramas, Narek Sahakyan, Daniela Dorner, Luca Tosti, Julian Sitarek, Fallah Ramazani, Tihomir Surić, Pablo Peñil, Lorenzo Bellizzi, Gaia Vanzo, M. Gaug, D. Fidalgo, P. G. Prada Moroni, K. Nishijima, Daniela Hadasch, Francesco Longo, Alicia Fattorini, Tomoki Saito, Giovanni Ceribella, G. Maneva, U. Barres de Almeida, Damir Lelas, S. Paiano, Karl Mannheim, R. J. García López, Katsuaki Asano, David Paneque, Saverio Lombardi, D. Ninci, Wrijupan Bhattacharyya, Koji Noda, Chiara Righi, M. Peresano, Daniel Kerszberg, Pratik Majumdar, D. Guberman, Dorota Sobczyńska, Matteo Cerruti, V. A. Acciari, Yuki Iwamura, Susumu Inoue, Elisa Bernardini, Wlodek Bednarek, M. V. Fonseca, P. Temnikov, A. Rugliancich, Martin Makariev, Marina Manganaro, G. Ferrara, L. Maraschi, Elina Lindfors, Martin Will, D. Zarić, Oscar Blanch, Nikola Godinovic, D. Strom, E. Do Souto Espiñeira, N. Torres-Albà, Ferdinando Giordano, Jordi Delgado, U. Colin, David A. Green, Marc Ribó, M. Palatiello, F. Di Pierro, Ž. Bošnjak, Ivica Puljak, Tomislav Terzić, Alexander Hahn, D. Elsaesser, Toshiaki Inada, B. Banerjee, Shunsuke Sakurai, Kevin Schmidt, Dario Hrupec, E. Molina, Hidetoshi Kubo, M. A. Lopez, Konstancja Satalecka, M. I. Martínez, Michele Doro, Francesco Dazzi, E. Colombo, A. De Angelis, Mitsunari Takahashi, Lab Saha, Luca Foffano, P. Munar-Adrover, Massimo Persic, Stefano Ansoldi, Davide Depaoli, Yating Chai, Junko Kushida, Stefan Cikota, P. Da Vela, Jose Miguel Miranda, Vitale, Riccardo Paoletti, J. van Scherpenberg, Sasa Micanovic, B. Machado de Oliveira Fraga, J. Palacio, E. Prandini, M. Vazquez Acosta, J. M. Paredes, Antonio Stamerra, Moritz Hütten, Vagelli, A. Chilingaryan, Ievgen Vovk, Dominik Baack, Marcel Strzys, Jose Carlos Herrera, Jürgen Besenrieder, T. Schweizer, D’Elia, Camilla Maggio, Christian Fruck, N. Giglietto, Moreno, Yusuke Suda, Carlo Vigorito, Sidika Merve Colak, Manuel Delfino, Alice Donini, L. A. Antonelli, Ana Babić, R. Clavero, Daniel Morcuende, Jose Luis Contreras, Juan Cortina, Fabrizio Tavecchio, Ll. Font, I. Snidaric, Kari Nilsson, D. Miceli, Serena Loporchio, Abelardo Moralejo, E. Moretti, B. De Lotto, S. Nozaki, Ciro Bigongiari, M. Garczarczyk, R. López-Coto, ITA, Acciari, V. A., Ansoldi, S., Antonelli, L. A., Arbet Engels, A., Baack, D., Babic, A., Banerjee, B., Barres de Almeida, U., Barrio, J. A., Becerra Gonzalez, J., Bednarek, W., Bellizzi, L., Bernardini, E., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Bosnjak, Z., Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingaryan, A., Cikota, S., Colak, S. M., Colin, U., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D'Elia, V., da Vela, P., Dazzi, F., de Angelis, A., de Lotto, B., Delfino, M., Delgado, J., Depaoli, D., Di Pierro, F., Di Venere, L., Do Souto Espineira, E., Dominis Prester, D., Donini, A., Dorner, D., Doro, M., Elsaesser, D., Fallah Ramazani, V., Fattorini, A., Ferrara, G., Fidalgo, D., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., Garcia Lopez, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Godinovic, N., Green, D., Guberman, D., Hadasch, D., Hahn, A., Herrera, J., Hoang, J., Hrupec, D., Hutten, M., Inada, T., Inoue, S., Ishio, K., Iwamura, Y., Jouvin, L., Kerszberg, D., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., Lopez, M., Lopez-Coto, R., Lopez-Oramas, A., Loporchio, S., Machado de Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martinez, M., Mazin, D., Micanovic, S., Miceli, D., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Munar-Adrover, P., Neustroev, V., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogues, L., Nozaki, S., Paiano, S., Palacio, J., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Penil, P., Peresano, M., Persic, M., Prada Moroni, P. G., Prandini, E., Puljak, I., Rhode, W., Ribo, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Schmidt, K., Schweizer, T., Sitarek, J., Snidaric, I., Sobczynska, D., Somero, A., Stamerra, A., Strom, D., Strzys, M., Suda, Y., Suric, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzic, T., Teshima, M., Torres-Alba, N., Tosti, L., Vagelli, V., van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Zaric, D., Asano, K., D'Ammando, F., and Clavero, R.
Subjects: Astrophysics and Astronomy, galaxie [Gamma-rays], active [Galaxies], Astrophysics::High Energy Astrophysical Phenomena, Hadron, FOS: Physical sciences, astro-ph.HE, Context (language use), Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Jet (particle physics), X-rays: general, 01 natural sciences, 7. Clean energy, law.invention, law, general [X-rays], 0103 physical sciences, MAGIC (telescope), Blazar, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, 010308 nuclear & particles physics, general [BL Lacertae objects], Gamma ray, BL Lacertae objects: general - galaxies: active - gamma-rays: galaxies - X-rays: general, Astronomy and Astrophysics, alaxies: active, BL Lacertae objects: general, gamma-rays: gala, Galaxies: active, Synchrotron, galaxies [gamma-rays], 13. Climate action, Space and Planetary Science, Spectral energy distribution, ddc:520, Física nuclear, Astrophysics - High Energy Astrophysical Phenomena, Gamma-rays: galaxies
Abstract: Extreme high-energy peaked BL Lac objects (EHBLs) are an emerging class of blazars. Their typical two-hump structured spectral energy distribution (SED) peaks at higher energies with respect to conventional blazars. Multi-wavelength (MWL) observations constrain their synchrotron peak in the medium to hard X-ray band. Their gamma-ray SED peaks above the GeV band, and in some objects it extends up to several TeV. Up to now, only a few EHBLs have been detected in the TeV gamma-ray range. In this paper, we report the detection of the EHBL 2WHSP J073326.7+515354, observed and detected during 2018 in TeV gamma rays with the MAGIC telescopes. The broad-band SED is studied within a MWL context, including an analysis of the Fermi-LAT data over ten years of observation and with simultaneous Swift-XRT, Swift-UVOT, and KVA data. Our analysis results in a set of spectral parameters that confirms the classification of the source as an EHBL. In order to investigate the physical nature of this extreme emission, different theoretical frameworks were tested to model the broad-band SED. The hard TeV spectrum of 2WHSP J073326.7+515354 sets the SED far from the energy equipartition regime in the standard one-zone leptonic scenario of blazar emission. Conversely, more complex models of the jet, represented by either a two-zone spine-layer model or a hadronic emission model, better represent the broad-band SED., MNRAS published
Published: 2019
Full Text: View/download PDF

23. The broad-band properties of the intermediate synchrotron peaked BL Lac S2 0109+22 from radio to VHE gamma rays

Author: F. Wierda, M. Peresano, Cosimo Nigro, Alexander Hahn, M. Nievas Rosillo, R. Reinthal, M. Hayashida, M. Minev, N. Mankuzhiyil, Julian Sitarek, Razmik Mirzoyan, U. Barres de Almeida, Nikola Godinovic, Damir Lelas, J. M. Paredes, Tomislav Terzić, Marc Ribó, Kazuma Ishio, Antonio Stamerra, Ievgen Vovk, Dorota Sobczyńska, M. Delfino, Wrijupan Bhattacharyya, Juan Abel Barrio, P. Bangale, Francesco Longo, D. Dominis Prester, Hidetoshi Kubo, B. De Lotto, J. E. Ward, Rodolfo Carosi, Camilla Maggio, Jenni Jormanainen, S. Paiano, M. Lopez, Karl Mannheim, P. G. Prada Moroni, Marcel Strzys, Ivica Puljak, John Hoang, Stefano Ciprini, Pierre Colin, Daniela Dorner, Gaia Vanzo, Dominik Baack, R. Desiante, Jordi Delgado, T. Schweizer, Fallah Ramazani, F. Di Pierro, M. Gaug, G. Ferrara, Anthony C. S. Readhead, D. Elsaesser, J. Becerra González, J. Herrera, G. Bonnoli, M. Vazquez Acosta, Talvikki Hovatta, Neustroev, L. Nogués, R. J. García López, Martin Makariev, Koji Noda, Elisa Bernardini, L. Maraschi, A. Niedzwiecki, Francesco Dazzi, A. Fernández-Barral, Elina Lindfors, K. Pfrang, Oscar Blanch, E. Moretti, Dario Hrupec, P. Da Vela, Pratik Majumdar, M. V. Fonseca, Darko Zarić, Aaron Dominguez, Daniel Mazin, A. Berti, Ciro Bigongiari, J. Palacio, Massimo Persic, F. Leone, Anne Lähteenmäki, Stefano Ansoldi, S Barcewicz, M. Garczarczyk, David Paneque, Masahiro Teshima, Martin Will, Riccardo Paoletti, Stefano Covino, Walter Max-Moerbeck, R. Ch. Berse, Sidika Merve Colak, Yuki Iwamura, Kyoshi Nishijima, D. Ninci, Abelardo Moralejo, J. R. Garcia, Susumu Inoue, D. Guberman, E. Prandini, Louis Antonelli, R. J. C. Vera, Alessandra Lamastra, M. I. Martínez, Tomoki Saito, Giovanni Ceribella, Marina Manganaro, Merja Tornikoski, Joni Tammi, Sabrina Einecke, P. Cumani, Chiara Righi, Konstancja Satalecka, Wolfgang Rhode, Michele Doro, P. Temnikov, K. Mielke, Iva Šnidarić, Sebastian Kiehlmann, B. Banerjee, Alicia Fattorini, C. Arcaro, Pablo Peñil, Shimpei Tsujimoto, Jürgen Besenrieder, Adrian Biland, Moreno, Tihomir Surić, J. Rico, Satoshi Masuda, Arka Chatterjee, P. Giammaria, D. Fidalgo, N. Torres-Albà, Tarek M. Hassan, G. Pedaletti, Yusuke Konno, W. Bednarek, Fabrizio Tavecchio, Ll. Font, A. De Angelis, Stefano Gallozzi, Jose Miguel Miranda, G. Maneva, Ana Babić, J. Kushida, Jose Luis Contreras, Juan Cortina, Kari Nilsson, E. Colombo, Lab Saha, Luca Foffano, L. O. Takalo, D. Hadasch, Mosè Mariotti, Saverio Lombardi, Andrea Rugliancich, D’Elia, Christian Fruck, Department of Electronics and Nanoengineering, Metsähovi Radio Observatory, Aalto-yliopisto, Aalto University, Ansoldi, S., Antonelli, L. A., Arcaro, C., Baack, D., Babić, A., Banerjee, B., Bangale, P., de Almeida, U. Barre, Barrio, J. A., González, J. Becerra, Bednarek, W., Bernardini, E., Berse, R. Ch., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Carosi, R., Ceribella, G., Chatterjee, A., Colak, S. M., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Cumani, P., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Di Pierro, F., Domínguez, A., Prester, D. Domini, Dorner, D., Doro, M., Einecke, S., Elsaesser, D., Ramazani, V. Fallah, Fattorini, A., Fernández-Barral, A., Ferrara, G., Fidalgo, D., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Gallozzi, S., García Łópez, R. J., Garczarczyk, M., Gaug, M., Giammaria, P., Godinović, N., Guberman, D., Hadasch, D., Hahn, A., Hassan, T., Hayashida, M., Herrera, J., Hoang, J., Hrupec, D., Inoue, S., Ishio, K., Iwamura, Y., Konno, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., Łópez, M., Maggio, C., Majumdar, P., Makariev, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Masuda, S., Mazin, D., Mielke, K., Minev, M., Miranda, J. M., Mirzoyan, R., Moralejo, A., Moreno, V., Moretti, E., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogués, L., Paiano, S., Palacio, J., Paneque, D., Paoletti, R., Paredes, J. M., Pedaletti, G., Peñil, P., Peresano, M., Persic, M., Pfrang, K., Prada Moroni, P. G., Prandini, E., Puljak, I., Garcia, J. R., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Saito, T., Satalecka, K., Schweizer, T., Sitarek, J., Šnidarić, I., Sobczynska, D., Stamerra, A., Strzys, M., Surić, T., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Torres-Albà, N., Tsujimoto, S., Vanzo, G., Vazquez Acosta, M., Vovk, I., Ward, J. E., Will, M., Zarić, D., Ciprini, S., Desiante, R., Barcewicz, S., Hovatta, T., Jormanainen, J., Takalo, L., Reinthal, R., Mankuzhiyil, N., Wierda, F., Lähteenmäki, A., Tammi, J., Tornikoski, M., Vera, R. J. C., Kiehlmann, S., Max-Moerbeck, W., Readhead, A. C. S., Ciprini , S., and Desiante , R.
Subjects: galaxie [Gamma-rays], active [Galaxies], Astrophysics::High Energy Astrophysical Phenomena, Population, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, jet [Galaxies], Luminosity, 0103 physical sciences, BL Lacertae objects: individual: S2 0109+22, Galaxies: active, Galaxies: jets, Gamma-rays: galaxies, Astronomy and Astrophysics, Space and Planetary Science, MAGIC (telescope), Blazar, education, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, education.field_of_study, ta115, 010308 nuclear & particles physics, galaxies: active, galaxies: jets, gamma-rays: galaxies, Optical polarization, individual: S2 0109+22 [BL Lacertae objects], Astronomy and Astrophysic, Redshift, 13. Climate action, ddc:520, Spectral energy distribution, Física nuclear, Astrophysics - High Energy Astrophysical Phenomena, BL Lac object
Abstract: The MAGIC telescopes observed S2 0109+22 in 2015 July during its flaring activity in high energy gamma rays observed by Fermi-LAT. We analyse the MAGIC data to characterise the very high energy (VHE) gamma-ray emission of S2 0109+22, which belongs to the subclass of intermediate synchrotron peak (ISP) BL Lac objects. We study the multi-frequency emission in order to investigate the source classification. Finally, we compare the source long-term behaviour to other VHE gamma-ray emitting (TeV) blazars. We performed a temporal and spectral analysis of the data centred around the MAGIC interval of observation (MJD 57225-57231). Long-term radio and optical data have also been investigated using the discrete correlation function. The redshift of the source is estimated through optical host-galaxy imaging and also using the amount of VHE gamma-ray absorption. The quasi-simultaneous multi-frequency spectral energy distribution (SED) is modelled with the conventional one-zone synchrotron self-Compton (SSC) model. MAGIC observations resulted in the detection of the source at a significance level of $5.3\,\sigma$. The VHE gamma-ray emission of S2 0109+22 is variable on a daily time scale. VHE gamma-ray luminosity of the source is lower than the average of TeV BL Lacs. The optical polarization, and long-term optical/radio behaviour of the source are different from the general population of TeV blazars. All these findings agree with the classification of the source as an ISP BL Lac object. We estimate the source redshift as $z = 0.36 \pm 0.07$. The SSC parameters describing the SED are rather typical for blazars., Comment: 15 pages, 10 figures, Corresponding authors: Fallah Ramazani, V. (vafara@utu.fi), Hovatta, T. (talvikki.hovatta@utu.fi), Lindfors, E. (elilin@utu.fi) and Nilsson, K. (kani@utu.fi)
Published: 2018
Full Text: View/download PDF

24. Resolving the origin of very-high-energy gamma-ray emission from the PeVatron candidate SNR G106.3+2.7 using MAGIC telescopes

Author: M. I. Martínez, Giacomo D'Amico, Manuel Artero, Christian Fruck, Manuel Delfino, Ulisses Barres de Almeida, Jarred Gershon Green, Jordi Delgado, Tomislav Terzić, Lluis Font, Marcos López-Moya, Wlodek Bednarek, Federico Di Pierro, Ana Babić, Ruben Lopez-Coto, Lena Linhoff, Marcel Strzys, Kevin Schmidt, Irene Jiménez Martínez, Davide Depaoli, Sargis Gasparyan, Simone Mender, Javier Herrera, Jose Miguel Miranda, Javier Rico, Tokonatsu Yamamoto, Vitaly Neustroev, Daniel Kerszberg, Juan Abel Barrio, Lorenzo Bellizzi, Luca Tosti, Wolfgang Rhode, Junko Kushida, Giovanni Busetto, Paolo Da Vela, Lovro Pavletić, Narek Sahakyan, Serena Loporchio, Takeshi Nakamori, Francesco Longo, Barbara De Lotto, Abelardo Moralejo, Manuela Mallamaci, Leonardo Di Venere, Valerio D'Elia, Alessandro De Angelis, David H. Green, Camilla Maggio, Marina Manganaro, Jürgen Besenrieder, Stefano Truzzi, G. Maneva, Carlos Delgado Mendez, Pablo Peñil, Francesco Giordano, Antonio Tutone, Adrian Biland, Alexander Hahn, L. Maraschi, Elina Lindfors, Wrijupan Bhattacharyya, Daniel Mazin, Elia Do Souto Espiñeira, Elena Moretti, Yuki Iwamura, Stefano Covino, Saša Mićanović, Thomas Schweizer, Stefano Menchiari, Daniela Dorner, Giovanni Ceribella, Gaia Vanzo, Marine Pihet, Konstancja Satalecka, Stefano Ansoldi, Marc Ribó, Michele Doro, Ivana Batković, Riccardo Paoletti, Martin Makariev, Chiara Righi, Ryuji Takeishi, D. M. Strom, Kari Nilsson, Yating Chai, Oscar Blanch, Markus Gaug, Stefan Cikota, Maria-Isabel Bernardos, Michele Palatiello, Tomohiko Oka, Alice Donini, Petar Temnikov, Mosè Mariotti, Koji Noda, Pratik Majumdar, Elisa Bernardini, Marie Karjalainen, Yusuke Suda, Takashi Saito, D. Dominis Prester, Pawel Gliwny, Nicola Giglietto, Cosimo Nigro, Kyoshi Nishijima, Hidetoshi Kubo, Tomohiro Inada, Bernd Schleicher, Iva Šnidarić, Markus Garczarczyk, Martin Will, Vandad Fallah Ramazani, Simona Paiano, Josep M. Paredes, Jenni Jormanainen, Carlo Vigorito, Dominik Baack, Lara Nava, Alessandra Lamastra, Chaitanya Priyadarshi, Edgar Molina, Vincenzo Vitale, Antonio Stamerra, Yukiho Kobayashi, Jorge Otero-Santos, Fabrizio Tavecchio, Louis Antonelli, Josefa González, Bernardo Machado de Oliveira Fraga, Alicia Fattorini, Sofia Ventura, Eduardo Colombo, Victoria Moreno, Satoshi Fukami, Massimo Persic, Darko Zarić, Seiya Nozaki, Daniel Morcuende, Jose Luis Contreras, Carolin Wunderlich, Francesco Leone, Juan Cortina, Masahiro Teshima, Tihomir Surić, Saverio Lombardi, Hendrik Bökenkamp, Tjark Miener, David Paneque, Ciro Bigongiari, Jelena Strišković, Andrea Rugliancich, Ivica Puljak, Santiago Ubach, Karl Mannheim, Victor A. Acciari, Giacomo Bonnoli, Alicia López-Oramas, Dario Hrupec, Sidika Merve Colak, Monica Vazquez Acosta, P. G. Prada Moroni, Moritz Hütten, Roberto Carosi, Shunsuke Sakurai, Mitsunari Takahashi, Alessio Berti, Kazuma Ishio, Andrés Baquero, Ramon J. García López, John Hoang, Davide Miceli, Axel Arbet Engels, Elisa Prandini, Alessia Spolon, Léa Jouvin, Dominik Elsaesser, Razmik Mirzoyan, Juliane van Scherpenberg, Ashot Chilingarian, Damir Lelas, Vassil Verguilov, Lea Heckmann, Francesco Gabriele Saturni, Dorota Sobczyńska, Zeljka Bosnjak, Katsuaki Asano, Maria Victoria Fonseca, Francesco Dazzi, Ievgen Vovk, Nikola Godinovic, Matteo Cerruti, Yasushi Fukazawa, Julian Sitarek, Daniela Hadasch, and Yoshiki Ohtani
Subjects: Physics, Air shower, Pulsar, Astrophysics::High Energy Astrophysical Phenomena, Continuum (design consultancy), Gamma ray, Angular resolution, Astrophysics::Cosmology and Extragalactic Astrophysics, MAGIC (telescope), Astrophysics, Supernova remnant, Pulsar wind nebula, Astrophysics::Galaxy Astrophysics
Abstract: The supernova remnant (SNR) G106.3+2.7 associated with a 100 TeV gamma-ray source reported by HAWC, Tibet AS$\gamma$, and LHAASO Collaborations is one of the promising PeVatron candidates. Because the SNR contains an energetic pulsar wind nebula (PWN) dubbed Boomerang powered by the pulsar PSR J2229+6114, it is unclear whether the gamma-ray emission originates from the SNR or PWN complex and whether it is caused by hadronic or leptonic processes. We observed gamma rays above 200 GeV in the vicinity of the SNR G106.3+2.7 using the MAGIC telescopes for total $\sim120$ hours between May 2017 and August 2019 with an angular resolution of 0.07--0.10 degrees, achieving an unprecedented exposure for this object at these energies. An extended gamma-ray emission spatially correlated with the radio continuum emission at the head and tail of SNR G106.3+2.7 was detected using the MAGIC telescopes. We found a significant gamma-ray emission above 5.65 TeV only from the SNR tail region, while no significant emission in the same band is found at the SNR head region containing the Boomerang PWN. Therefore, the gamma rays above 10 TeV detected with the air shower experiments are, likely, mainly emitted from the SNR tail region. In this presentation, we discuss the morphology of the gamma-ray emission from this complex region and attempt self-consistent multi-wavelength modeling of the energy spectrum.

25. Bounds on Lorentz Invariance Violation from MAGIC Observation of GRB 190114C

Author: M. Peresano, Lara Nava, K. Noda, L. Maraschi, Lorenzo Bellizzi, Elina Lindfors, Daniel Mazin, Sidika Merve Colak, Pratik Majumdar, M. V. Fonseca, L. Pavletić, B. Banerjee, Shunsuke Sakurai, Yating Chai, Stefan Cikota, Pawel Gliwny, M. Vazquez Acosta, Alessandra Lamastra, L. Di Venere, Victoria Moreno, L. Nogués, C. Nigro, U. Colin, David A. Green, Martin Will, Alice Donini, Julian Sitarek, L. A. Antonelli, M. I. Martínez, Kari Nilsson, Jorge Otero-Santos, Seiya Nozaki, Alexander Hahn, Abelardo Moralejo, D. Hadasch, Dominik Baack, D. Ninci, Matteo Cerruti, M. Minev, E. Do Souto Espiñeira, Tomislav Terzić, A. Rugliancich, E. Moretti, Marina Manganaro, Stefano Covino, J. Becerra González, P. G. Prada Moroni, C. Perennes, U. Barres de Almeida, I. Vovk, Yoshiki Ohtani, Daniel Morcuende, Jose Luis Contreras, Jordi Delgado, Kyoshi Nishijima, Daniel Kerszberg, J. M. Paredes, Juan Cortina, Martin Makariev, Fabrizio Tavecchio, M. Palatiello, Alessio Berti, F. Di Pierro, Ž. Bošnjak, Damir Lelas, Victor A. Acciari, D. Dominis Prester, Oscar Blanch, V. D'Elia, Ll. Font, Y. Kajiwara, Antonio Stamerra, Yusuke Suda, Wlodek Bednarek, Nikola Godinovic, Kai Phillip Schmidt, Tomoki Saito, Giovanni Ceribella, Francesco Dazzi, Carlo Vigorito, I. Snidaric, Mosè Mariotti, G. Busetto, Yuki Iwamura, Dorota Sobczyńska, Satoshi Fukami, Camilla Maggio, D. Zarić, N. Torres-Albà, Ferdinando Giordano, J. van Scherpenberg, Daniela Dorner, Davide Depaoli, Marc Ribó, Takeshi Oka, Manuel Delfino, Toshiaki Inada, Bernd Schleicher, Christian Fruck, V. Fallah Ramazani, D. Strom, Jose Miguel Miranda, Ivica Puljak, Junko Kushida, M. Gaug, G. Vanzo, P. Da Vela, Moritz Hütten, John Hoang, Konstancja Satalecka, Hidetoshi Kubo, Ana Babić, F. Leone, Michele Doro, Jürgen Besenrieder, S. Ventura, Karl Mannheim, Saverio Lombardi, J. Herrera, Sanae Inoue, Giacomo D'Amico, Manuela Mallamaci, Alessia Spolon, Léa Jouvin, P. Munar-Adrover, Alicia Fattorini, D. Miceli, T. Surić, Masahiro Teshima, B. Machado de Oliveira Fraga, Elisa Bernardini, T. Schweizer, Vassil Verguilov, F Longo, G. Ferrara, Serena Loporchio, Marie Karjalainen, E. Molina, E. Colombo, B. De Lotto, Dario Hrupec, Stefano Ansoldi, Riccardo Paoletti, Lab Saha, Luca Foffano, M. A. Lopez, N. Giglietto, Simone Mender, Mitsunari Takahashi, R. J. García López, M. Strzys, Y. Kobayashi, A. Arbet Engels, A. De Angelis, Vitaly Neustroev, Tjark Miener, Massimo Persic, David Paneque, Luca Tosti, G. Maneva, Chiara Righi, Adrian Biland, P. Temnikov, Giacomo Bonnoli, J. Rico, Ciro Bigongiari, M. Garczarczyk, R. López-Coto, Wrijupan Bhattacharyya, D. Elsaesser, Pablo Peñil, Saša Mićanović, V. Vitale, Sargis Gasparyan, Wolfgang Rhode, Juan Abel Barrio, Narek Sahakyan, A. López-Oramas, R. Mirzoyan, Kazuma Ishio, Elisa Prandini, Rodolfo Carosi, Ashot Chilingarian, Acciari, V. A., Ansoldi, S., Antonelli, L. A., Arbet Engels, A., Baack, D., Babic, A., Banerjee, B., Barres De Almeida, U., Barrio, J. A., Becerra Gonzalez, J., Bednarek, W., Bellizzi, L., Bernardini, E., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Bosnjak, A., Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingarian, A., Cikota, S., Colak, S. M., Colin, U., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D'Amico, G., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Depaoli, D., Di Pierro, F., Di Venere, L., Do Souto Espineira, E., Dominis Prester, D., Donini, A., Dorner, D., Doro, M., Elsaesser, D., Fallah Ramazani, V., Fattorini, A., Ferrara, G., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., Garcia Lopez, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Gliwny, P., Godinovic, N., Green, D., Hadasch, D., Hahn, A., Herrera, J., Hoang, J., Hrupec, D., Hutten, M., Inada, T., Inoue, S., Ishio, K., Iwamura, Y., Jouvin, L., Kajiwara, Y., Karjalainen, M., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., Lopez, M., Lopez-Coto, R., Lopez-Oramas, A., Loporchio, S., Machado De Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martinez, M., Mazin, D., Mender, S., Micanovic, S., Miceli, D., Miener, T., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Munar-Adrover, P., Neustroev, V., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogues, L., Nozaki, S., Ohtani, Y., Oka, T., Otero-Santos, J., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavletic, L., Penil, P., Perennes, C., Peresano, M., Persic, M., Prada Moroni, P. G., Prandini, E., Puljak, I., Rhode, W., Ribo, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Schleicher, B., Schmidt, K., Schweizer, T., Sitarek, J., Snidaric, I., Sobczynska, D., Spolon, A., Stamerra, A., Strom, D., Strzys, M., Suda, Y., Suric, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzic, T., Teshima, M., Torres-Alba, N., Tosti, L., Van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Ventura, S., Verguilov, V., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Zaric, D., and Nava, L.
Subjects: Astrophysics and Astronomy, Photon, Gamma ray burst, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics - High Energy Astrophysical Phenomena, GRB190114C, MAGIC, Lorentz Invariance Violation, FOS: Physical sciences, General Physics and Astronomy, burst [gamma ray], astro-ph.HE, 0 [higher-order], Astrophysics, Lorentz covariance, 01 natural sciences, 7. Clean energy, Gamma ray bursts, energy dependence, Astrophysical studies of gravity, Gamma ray astronomy, Quantum gravity, 0103 physical sciences, ddc:530, MAGIC (telescope), Lorentz [invariance], 010306 general physics, Cherenkov radiation, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, velocity [photon], Lorentz [violation], model [quantum gravity], Gamma-ray astronomy, imaging [Cherenkov counter], Speed of light, spectral, Física nuclear, High Energy Astrophysical Phenomena, Gamma-ray burst
Abstract: On January 14, 2019, the Major Atmospheric Gamma Imaging Cherenkov telescopes detected GRB 190114C above 0.2 TeV, recording the most energetic photons ever observed from a gamma-ray burst. We use this unique observation to probe an energy dependence of the speed of light in vacuo for photons as predicted by several quantum gravity models. Based on a set of assumptions on the possible intrinsic spectral and temporal evolution, we obtain competitive lower limits on the quadratic leading order of speed of light modification., 8 pages, 5 figures, Published in Physical Review Letters, Corresponding authors: Tomislav Terzi\'c (tterzic@phy.uniri.hr), Giacomo D'Amico (damico@mppmu.mpg.de), Daniel Kerszberg (dkerszberg@ifae.es), Cedric Perennes (perennes.cedric@gmail.com)
Full Text: View/download PDF

26. Monitoring the magnetar SGR 1935+2154 with the MAGIC telescopes

Author: Marcos López-Moya, Wlodek Bednarek, Stefano Covino, Federico Di Pierro, Pratik Majumdar, Ruben Lopez-Coto, Alessandra Lamastra, Vincenzo Vitale, Filippo Ambrosino, Irene Jiménez Martínez, Francesco Leone, Mark P. Snelders, Jose Miguel Miranda, Adrian Biland, Takeshi Nakamori, Martin Will, Francesco Longo, Jordi Delgado, Paolo Da Vela, Francesco Dazzi, Jorge Otero-Santos, Vandad Fallah Ramazani, David H. Green, Barbara De Lotto, Giacomo D'Amico, Josep M. Paredes, Antonio Stamerra, Roberto Carosi, Giovanni Ceribella, Franz Kirsten, John Hoang, Sidika Merve Colak, Abelardo Moralejo, Camilla Maggio, Daniela Dorner, Gaia Vanzo, Seiya Nozaki, Elia Do Souto Espiñeira, Kevin Schmidt, Monica Vazquez Acosta, Marina Manganaro, Daniel Kerszberg, Daniel Morcuende, Jose Luis Contreras, Davide Depaoli, Jarred Gershon Green, Tomohiko Oka, Serena Loporchio, Massimo Persic, Giacomo Bonnoli, D. Dominis Prester, Marc Ribó, Martin Makariev, L. Maraschi, Lorenzo Bellizzi, P. G. Prada Moroni, Hidetoshi Kubo, Juliane van Scherpenberg, Tomohiro Inada, Petar Temnikov, Juan Cortina, Elina Lindfors, Koji Noda, Francesco Coti Zelati, Juan Abel Barrio, Santiago Ubach, Narek Sahakyan, Shunsuke Sakurai, Kyoshi Nishijima, Elisa Bernardini, Ivica Puljak, Junko Kushida, Lovro Pavletić, Davide Miceli, Alessia Spolon, Léa Jouvin, Oscar Blanch, Stefano Menchiari, Bernd Schleicher, Jenni Jormanainen, Satoshi Fukami, Hendrik Bökenkamp, Omar S. Ould-Boukattine, Elena Moretti, Konstancja Satalecka, Leonardo Di Venere, Carlos Delgado Mendez, Edgar Molina, Lluis Font, Vassil Verguilov, Alice Borghese, Bernardo Machado de Oliveira Fraga, Dario Hrupec, Michele Doro, Katsuaki Asano, Alessandro Papitto, Daniel Mazin, Jürgen Besenrieder, Lena Linhoff, Ramon J. García López, Francesco Giordano, Javier Rico, Antonio Tutone, Marcel Strzys, Simone Mender, Thomas Schweizer, Tokonatsu Yamamoto, Sargis Gasparyan, Yating Chai, Ievgen Vovk, Vitaly Neustroev, Mitsunari Takahashi, Javier Herrera, Maria Victoria Fonseca, Masahiro Teshima, Stefano Ansoldi, Stefan Cikota, Pawel Gliwny, Nicola Giglietto, Riccardo Paoletti, Markus Gaug, Luca Tosti, Michele Palatiello, Nikola Godinovic, Wolfgang Rhode, Benito Marcote, Giovanni Busetto, Victoria Moreno, Ryuji Takeishi, Ciro Bigongiari, Chiara Righi, Darko Zarić, Stefano Truzzi, D. M. Strom, Kari Nilsson, Wrijupan Bhattacharyya, Valerio D'Elia, Manuela Mallamaci, Julian Sitarek, Alice Donini, Jason W. T. Hessels, G. Maneva, Pablo Peñil, Alessandro De Angelis, Marie Karjalainen, Daniela Hadasch, Iva Šnidarić, Alexander Hahn, Saša Mićanović, Chaitanya Priyadarshi, Yoshiki Ohtani, Ivana Batković, Yusuke Suda, Marine Pihet, Matteo Cerruti, Manuel Delfino, Ulisses Barres de Almeida, Louis Antonelli, Lara Nava, Dominik Elsaesser, Razmik Mirzoyan, Mosè Mariotti, Damir Lelas, Lea Heckmann, Andrés Baquero, Francesco Gabriele Saturni, Tarek M. Hassan, Yasushi Fukazawa, Carolin Wunderlich, Ana Babić, Dorota Sobczyńska, Fabrizio Tavecchio, Zeljka Bosnjak, Eduardo Colombo, Carlo Vigorito, Tjark Miener, Victor A. Acciari, David Paneque, Jelena Strišković, Moritz Hütten, Saverio Lombardi, Andrea Rugliancich, Takashi Saito, Dominik Baack, Alessio Berti, Yukiho Kobayashi, Axel Arbet Engels, Cosimo Nigro, Sofia Ventura, Yuki Iwamura, Susumu Inoue, Tihomir Surić, Karl Mannheim, Christian Fruck, Alicia López-Oramas, Maria-Isabel Bernardos, Simona Paiano, Alicia Fattorini, M. I. Martínez, Manuel Artero, Markus Garczarczyk, Josefa González, Tomislav Terzić, Kazuma Ishio, Elisa Prandini, and Ashot Chilingarian
Subjects: Physics, Wavelength, Fast radio burst, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Context (language use), Astrophysics, MAGIC (telescope), Magnetar, Astrophysics::Galaxy Astrophysics, Cherenkov radiation, Optical telescope
Abstract: The Galactic magnetar SGR 1935+2154 was associated with a bright, millisecond-timescale fast radio burst (FRB) which occured in April 2020, during a flaring episode. This was the first time an FRB was unequivocally associated with a Galactic source, and the first FRB for which the nature of the emitting source was identified. Moreover, it was the first FRB with a counterpart at another wavelength correlated in time, an atypical, hard X-ray burst, which provides clear evidence for accompanying non-thermal processes. The MAGIC Telescopes are Imaging Air Cherenkov Telescopes (IACTs) sensitive to very-high-energy (VHE, E>100 GeV) gamma rays. Located at the center of the camera lies the MAGIC Central pixel, a single fully-modified photosensor-to- readout chain to measure millisecond-duration optical signals, displaying a maximum sensitivity at a wavelength of 350 nm. This allows MAGIC to operate simultaneously both as a VHE gamma- ray and a fast optical telescope. The MAGIC telescopes have monitored SGR 1935+2154 in a multiwavelength campaign involving X-ray, radio and optical facilities. In this contribution, we will show the results on the search for the VHE counterpart of the first SGR-FRB source in this multiwavelength context, as well as the search for fast optical bursts with the MAGIC Central Pixel.

27. Observation of a relatively low luminosity long duration GRB 201015A by the MAGIC telescopes

Author: Dominik Elsaesser, Razmik Mirzoyan, Javier Rico, Tokonatsu Yamamoto, Vitaly Neustroev, Damir Lelas, Lea Heckmann, Francesco Gabriele Saturni, Alexander Hahn, Dorota Sobczyńska, Zeljka Bosnjak, Dario Hrupec, Mitsunari Takahashi, Luca Tosti, Manuel Delfino, Ulisses Barres de Almeida, Valerio D'Elia, G. Maneva, Ana Babić, Michele Palatiello, Marine Pihet, Mosè Mariotti, Kazuma Ishio, Ievgen Vovk, Matteo Cerruti, Jordi Delgado, Yusuke Suda, Adrian Biland, Abelardo Moralejo, Yasushi Fukazawa, D. Dominis Prester, Lena Linhoff, Elisa Prandini, Yuki Iwamura, Kevin Schmidt, Carlo Vigorito, Francesco Longo, Stefano Truzzi, Juliane van Scherpenberg, Ivica Puljak, Jenni Jormanainen, Alice Donini, Satoshi Fukami, Davide Miceli, Saverio Lombardi, Daniel Morcuende, Davide Depaoli, Jose Luis Contreras, Bernardo Machado de Oliveira Fraga, Ashot Chilingarian, Vandad Fallah Ramazani, Christian Fruck, Josep M. Paredes, Antonio Stamerra, Andrea Rugliancich, Juan Cortina, Iva Šnidarić, Ramon J. García López, L. Maraschi, Wrijupan Bhattacharyya, Pratik Majumdar, Elina Lindfors, Pablo Peñil, M. I. Martínez, Masahiro Teshima, Alessia Spolon, Léa Jouvin, Hendrik Bökenkamp, Leonardo Di Venere, Daniel Mazin, Daniela Dorner, Gaia Vanzo, Markus Garczarczyk, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Elia Do Souto Espiñeira, Chiara Righi, Giacomo Bonnoli, Takashi Saito, P. G. Prada Moroni, Bernd Schleicher, Edgar Molina, Martin Will, Saša Mićanović, Junko Kushida, Lovro Pavletić, Jorge Otero-Santos, Lara Nava, Marie Karjalainen, Dominik Baack, Ryuji Takeishi, Petar Temnikov, Koji Noda, Josefa González, D. M. Strom, Kari Nilsson, Ivana Batković, Manuela Mallamaci, Louis Antonelli, Yukiho Kobayashi, Elisa Bernardini, Chaitanya Priyadarshi, Alessandro De Angelis, Stefano Covino, Thomas Schweizer, Seiya Nozaki, Stefano Ansoldi, Riccardo Paoletti, Takeshi Nakamori, Vassil Verguilov, Martin Makariev, Oscar Blanch, Francesco Dazzi, Fabrizio Tavecchio, Markus Gaug, Barbara De Lotto, Manuel Artero, Carolin Wunderlich, Camilla Maggio, Eduardo Colombo, Tjark Miener, David Paneque, Giovanni Ceribella, Tomislav Terzić, Santiago Ubach, Juan Abel Barrio, Tomohiko Oka, Narek Sahakyan, Maria-Isabel Bernardos, Jelena Strišković, Kenta Terauchi, Ciro Bigongiari, Daniel Kerszberg, Kyoshi Nishijima, Marina Manganaro, Shunsuke Sakurai, Carlos Delgado Mendez, Victor A. Acciari, Elena Moretti, Julian Sitarek, Simona Paiano, Konstancja Satalecka, Alicia Fattorini, Michele Doro, Marc Ribó, Serena Loporchio, Moritz Hütten, Hidetoshi Kubo, Tomohiro Inada, Daniela Hadasch, Roberto Carosi, Yoshiki Ohtani, Andrés Baquero, Massimo Persic, Stefano Menchiari, Alessandra Lamastra, Vincenzo Vitale, Lluis Font, Francesco Leone, Marcos López-Moya, Wlodek Bednarek, Federico Di Pierro, Ruben Lopez-Coto, Irene Jiménez Martínez, Jose Miguel Miranda, Paolo Da Vela, David H. Green, Marcel Strzys, Katsuaki Asano, Maria Victoria Fonseca, Sidika Merve Colak, Monica Vazquez Acosta, Simone Mender, Javier Herrera, Yating Chai, Stefan Cikota, Pawel Gliwny, Nicola Giglietto, Nikola Godinovic, Victoria Moreno, Darko Zarić, John Hoang, Lorenzo Bellizzi, Giacomo D'Amico, Jarred Gershon Green, Cosimo Nigro, Sofia Ventura, Sargis Gasparyan, Alessio Berti, Wolfgang Rhode, Giovanni Busetto, Axel Arbet Engels, Tihomir Surić, Karl Mannheim, and Alicia López-Oramas
Subjects: Physics, education.field_of_study, High energy, Astrophysics::High Energy Astrophysical Phenomena, Population, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Redshift, Luminosity, Supernova, MAGIC (telescope), Gamma-ray burst, education, Short duration
Abstract: Starting from the first announcement of unequivocal detection of very high energy (VHE) emission from a gamma-ray burst (GRB) by the MAGIC telescopes (GRB 190114C), four additional detections of VHE emission from GRBs by ground-based telescopes were reported. These observations have revealed a new, energetic component that has become an additional probe to explore GRB physics. In order to deepen our understanding of the origin of this new component, and in general of the origin of radiation from GRBs, further observations by VHE instruments are crucial. In this work we report fast follow-up observations by the MAGIC telescopes of GRB 201015A, a GRB detected by the Swift/BAT. As measured by BAT, the prompt emission lasted 9.8 +/- 3.5 seconds, suggesting that this GRB belongs to the class of long events. This was later confirmed by optical observations, which allowed to measure the redshift (𝑧 = 0.42) and found the associated type Ic-BL supernova. Having a prompt isotropic-equivalent energy of 𝐸iso ∼10^{50} erg, this GRB is a relatively low energy event as compared to the population of long GRBs. Observations with the MAGIC telescopes started about 30 seconds after the GRB onset and were performed under good observational conditions. The accurate analysis of the MAGIC data reveals a strong hint of detection and implies a significant energy release in the TeV range, smaller but comparable with that of the prompt emission in the keV-MeV band.

28. Recent results on LIV studies using MAGIC telescopes from the observation of GRB 190114C

Author: Giacomo D( extquotesingle)Amico, Acciari, Victor A., Stefano, Ansoldi, Lucio Angelo Antonelli, Axel Arbet Engels, Manuel, Artero, Katsuaki, Asano, Dominik, Baack, Ana, Babic, Andr('(e))s, Baquero, Ulisses Barres de Almeida, Juan Abel Barrio, Ivana, Batkovi('(c)), Josefa Becerra Gonzalez, Wlodek, Bednarek, Lorenzo, Bellizzi, Elisa, Bernardini, Maria-Isabel, Bernardos, Alessio, Berti, Jürgen, Besenrieder, Wrijupan, Bhattacharyya, Ciro, Bigongiari, Adrian, Biland, Oscar, Blanch, Hendrik, Bökenkamp, Giacomo, Bonnoli, Zeljka, Bosnjak, Giovanni, Busetto, Roberto, Carosi, Giovanni, Ceribella, Matteo, Cerruti, Yating, Chai, Ashot, Chilingarian, Stefan, Cikota, Sidika Merve Colak, Eduardo, Colombo, Jose Luis Contreras, Juan, Cortina, Stefano, Covino, Valerio D( extquotesingle)Elia, Paolo Da Vela, Francesco, Dazzi, Alessandro De Angelis, Barbara De Lotto, Manuel, Delfino, Jordi, Delgado, Carlos Delgado Mendez, Davide, Depaoli, Federico Di Pierro, Leonardo Di Venere, Elia Do Souto Espi(~(n))eira, Dijana Dominis Prester, Alice, Donini, Daniela, Dorner, Michele, Doro, Dominik, Elsaesser, Vandad Fallah Ramazani, Alicia, Fattorini, Maria Victoria Fonseca, Lluis, Font, Christian, Fruck, Satoshi, Fukami, Yasushi, Fukazawa, Garc('(i))a L('(o))pez, Ramon J., Markus, Garczarczyk, Sargis, Gasparyan, Markus, Gaug, Giglietto, Nicola, Francesco, Giordano, Pawel, Gliwny, Nikola, Godinovic, David, Green, Jarred Gershon Green, Daniela, Hadasch, Alexander, Hahn, Lea, Heckmann, Javier, Herrera, John, Hoang, Dario, Hrupec, Moritz, Hütten, Tomohiro, Inada, Kazuma, Ishio, Yuki, Iwamura, Irene Jim('(e))nez Mart('(i))nez, Jenni, Jormanainen, L('(e))a, Jouvin, Marie, Karjalainen, Daniel, Kerszberg, Yukiho, Kobayashi, Hidetoshi, Kubo, Junko, Kushida, Alessandra, Lamastra, Damir, Lelas, Francesco, Leone, Elina, Lindfors, Lena, Linhoff, Saverio, Lombardi, Francesco, Longo, Ruben, Lopez-Coto, Marcos, L('(o))pez-Moya, Alicia, L('(o))pez-Oramas, Loporchio, Serena, Bernardo Machado de Oliveira Fraga, Camilla, Maggio, Pratik, Majumdar, Martin, Makariev, Manuela, Mallamaci, Galina, Maneva, Marina, Manganaro, Karl, Mannheim, Laura, Maraschi, Mos(`(e)), Mariotti, Manel, Martinez, Daniel, Mazin, Stefano, Menchiari, Simone, Mender, Sa( (s))a Mi('(c))anovi('(c)), Davide, Miceli, Tjark, Miener, Jose Miguel Miranda, Razmik, Mirzoyan, Edgar, Molina, Abelardo, Moralejo, Daniel, Morcuende, Victoria, Moreno, Elena, Moretti, Takeshi, Nakamori, Lara, Nava, Vitaly, Neustroev, Cosimo, Nigro, Kari, Nilsson, Kyoshi, Nishijima, Koji, Noda, Seiya, Nozaki, Yoshiki, Ohtani, Tomohiko, Oka, Jorge, Otero-Santos, Simona, Paiano, Michele, Palatiello, David, Paneque, Riccardo, Paoletti, Paredes, Josep M., Lovro, Pavleti('(c)), Pablo, Pe(~(n))il, Massimo, Persic, Marine, Pihet, Pier Giorgio Prada Moroni, Elisa, Prandini, Chaitanya, Priyadarshi, Ivica, Puljak, Wolfgang, Rhode, Marc, Rib('(o)), Javier, Rico, Chiara, Righi, Andrea, Rugliancich, Narek, Sahakyan, Takayuki, Saito, Shunsuke, Sakurai, Konstancja, Satalecka, Francesco Gabriele Saturni, Bernd, Schleicher, Kevin, Schmidt, Thomas, Schweizer, Julian, Sitarek, Iva, ( (S))nidari('(c)), Dorota, Sobczy('(n))ska, Alessia, Spolon, Antonio, Stamerra, Jelena Stri( (s))kovi('(c)), Derek, Strom, Marcel, Strzys, Yusuke, Suda, Tihomir, Suri('(c)), Mitsunari, Takahashi, Ryuji, Takeishi, Fabrizio, Tavecchio, Petar, Temnikov, Tomislav, Terzic, Masahiro, Teshima, Luca, Tosti, Stefano, Truzzi, Antonio, Tutone, Santiago, Ubach, Juliane van Scherpenberg, Gaia, Vanzo, Monica VAZQUEZ ACOSTA, Sofia, Ventura, Vassil, Verguilov, Carlo Francesco Vigorito, Vincenzo, Vitale, Ievgen, Vovk, Martin, Will, Carolin, Wunderlich, Tokonatsu, Yamamoto, Darko, Zari('(c)), C('(e))dric, Perennes, and And
Subjects: Physics, Astronomy, MAGIC (telescope), Gamma-ray burst

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources

Refine your results

28 results on '"Alessandra Lamastra"'

1. Searching for VHE gamma-ray emission associated with IceCube neutrino alerts using FACT, H.E.S.S., MAGIC, and VERITAS

2. MAGIC observations of HESS J1809-193 using the Very Large Zenith Angle technique at energies above TeV

3. Recent MAGIC results on Galactic binaries

4. Multi-messenger characterization of Mrk501 during historically low X-ray and gamma-ray activity

5. BL Lac object 1ES 0647+250, a decade of MWL observations

6. Search for Gamma-ray Line emission from Dark Matter annihilation in the Galactic Centre with the MAGIC telescopes

7. Investigation of the correlation patterns and the Compton dominance variability of Mrk 421 in 2017

8. First detection of VHE gamma-ray emission from TXS 1515-273, study of its X-ray variability and spectral energy distribution

9. MAGIC detection of Geminga: an Inverse Compton tail?

10. MAGIC and H.E.S.S. detect VHE gamma rays from the blazar OT081 for the first time: a deep multiwavelength study

11. Follow-up observations of GW170817 with the MAGIC telescopes

12. Shedding light on the highest energy emission from GRBs with MAGIC observations

13. Upper limits on the WIMP annihilation cross section from a joint analysis of dwarf spheroidal satellite galaxy observations with the MAGIC telescopes

14. Upper limits on the very high energy emission from {GRBs} observed by {MAGIC}

15. Understanding the origin of the extended gamma-ray emission and the physical nature of {HESS} J1841-055 using observations at {TeV} energies with the {MAGIC} telescopes

16. Very-high-energy gamma-ray emission from {GRB} 201216C detected by {MAGIC}

17. Discovery of TXS 1515-273 at VHE gamma-rays and modelling of its Spectral Energy Distribution

18. Protons Spectrum from {MAGIC} Telescopes data

19. Analysis of the W 44 Supernova Remnant and its surroundings with Fermi-{LAT} and {MAGIC}

20. H.e.s.s. And magic observations of a sudden cessation of a very-high-energy γ -ray flare in PKS 1510-089 in May 2016

21. Study of the variable broadband emission of Markarian 501 during the most extreme Swift X-ray activity

22. Testing emission models on the extreme blazar 2WHSP J073326.7+515354 detected at very high energies with the MAGIC telescopes

23. The broad-band properties of the intermediate synchrotron peaked BL Lac S2 0109+22 from radio to VHE gamma rays

24. Resolving the origin of very-high-energy gamma-ray emission from the PeVatron candidate SNR G106.3+2.7 using MAGIC telescopes

25. Bounds on Lorentz Invariance Violation from MAGIC Observation of GRB 190114C

26. Monitoring the magnetar SGR 1935+2154 with the MAGIC telescopes

27. Observation of a relatively low luminosity long duration GRB 201015A by the MAGIC telescopes

28. Recent results on LIV studies using MAGIC telescopes from the observation of GRB 190114C

Catalog

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Journal

Database

Publisher

28 results on '"Alessandra Lamastra"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources