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1. First Very Long Baseline Interferometry Detections at 870{\mu}m

Author: Raymond, Alexander W., Doeleman, Sheperd S., Asada, Keiichi, Blackburn, Lindy, Bower, Geoffrey C., Bremer, Michael, Broguiere, Dominique, Chen, Ming-Tang, Crew, Geoffrey B., Dornbusch, Sven, Fish, Vincent L., García, Roberto, Gentaz, Olivier, Goddi, Ciriaco, Han, Chih-Chiang, Hecht, Michael H., Huang, Yau-De, Janssen, Michael, Keating, Garrett K., Koay, Jun Yi, Krichbaum, Thomas P., Lo, Wen-Ping, Matsushita, Satoki, Matthews, Lynn D., Moran, James M., Norton, Timothy J., Patel, Nimesh, Pesce, Dominic W., Ramakrishnan, Venkatessh, Rottmann, Helge, Roy, Alan L., Sánchez, Salvador, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Wagner, Jan, Weintroub, Jonathan, Wielgus, Maciek, Young, André, Akiyama, Kazunori, Albentosa-Ruíz, Ezequiel, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Baloković, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blundell, Raymond, Bouman, Katherine L., Boyce, Hope, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fomalont, Edward, Fontana, Anne-Laure, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., Georgiev, Boris, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Kubo, Derek, Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mahieu, Sylvain, Maier, Doris, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Sánchez, Héctor Raúl Olivares, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Pen, Ue-Li, Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Principe, Giacomo, Psaltis, Dimitrios, Pu, Hung-Yi, Raffin, Philippe A., Rao, Ramprasad, Rawlings, Mark G., Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Salas, León David Sosapanta, Souccar, Kamal, Srinivasan, Ranjani, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Toma, Kenji, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Wharton, Robert, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, and Zhao, Shan-Shan
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract: The first very long baseline interferometry (VLBI) detections at 870$\mu$m wavelength (345$\,$GHz frequency) are reported, achieving the highest diffraction-limited angular resolution yet obtained from the surface of the Earth, and the highest-frequency example of the VLBI technique to date. These include strong detections for multiple sources observed on inter-continental baselines between telescopes in Chile, Hawaii, and Spain, obtained during observations in October 2018. The longest-baseline detections approach 11$\,$G$\lambda$ corresponding to an angular resolution, or fringe spacing, of 19$\mu$as. The Allan deviation of the visibility phase at 870$\mu$m is comparable to that at 1.3$\,$mm on the relevant integration time scales between 2 and 100$\,$s. The detections confirm that the sensitivity and signal chain stability of stations in the Event Horizon Telescope (EHT) array are suitable for VLBI observations at 870$\mu$m. Operation at this short wavelength, combined with anticipated enhancements of the EHT, will lead to a unique high angular resolution instrument for black hole studies, capable of resolving the event horizons of supermassive black holes in both space and time., Comment: Corresponding author: S. Doeleman
Published: 2024
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2. A ring-like accretion structure in M87 connecting its black hole and jet

Author: Lu, Ru-Sen, Asada, Keiichi, Krichbaum, Thomas P., Park, Jongho, Tazaki, Fumie, Pu, Hung-Yi, Nakamura, Masanori, Lobanov, Andrei, Hada, Kazuhiro, Akiyama, Kazunori, Kim, Jae-Young, Marti-Vidal, Ivan, Gómez, José L., Kawashima, Tomohisa, Yuan, Feng, Ros, Eduardo, Alef, Walter, Britzen, Silke, Bremer, Michael, Broderick, Avery E., Doi, Akihiro, Giovannini, Gabriele, Giroletti, Marcello, Ho, Paul T. P., Honma, Mareki, Hughes, David H., Inoue, Makoto, Jiang, Wu, Kino, Motoki, Koyama, Shoko, Lindqvist, Michael, Liu, Jun, Marscher, Alan P., Matsushita, Satoki, Nagai, Hiroshi, Rottmann, Helge, Savolainen, Tuomas, Schuster, Karl-Friedrich, Shen, Zhi-Qiang, de Vicente, Pablo, Walker, R. Craig, Yang, Hai, Zensus, J. Anton, Algaba, Juan Carlos, Allardi, Alexander, Bach, Uwe, Berthold, Ryan, Bintley, Dan, Byun, Do-Young, Casadio, Carolina, Chang, Shu-Hao, Chang, Chih-Cheng, Chang, Song-Chu, Chen, Chung-Chen, Chen, Ming-Tang, Chilson, Ryan, Chuter, Tim C., Conway, John, Crew, Geoffrey B., Dempsey, Jessica T., Dornbusch, Sven, Faber, Aaron, Friberg, Per, García, Javier González, Garrido, Miguel Gómez, Han, Chih-Chiang, Han, Kuo-Chang, Hasegawa, Yutaka, Herrero-Illana, Ruben, Huang, Yau-De, Huang, Chih-Wei L., Impellizzeri, Violette, Jiang, Homin, Jinchi, Hao, Jung, Taehyun, Kallunki, Juha, Kirves, Petri, Kimura, Kimihiro, Koay, Jun Yi, Koch, Patrick M., Kramer, Carsten, Kraus, Alex, Kubo, Derek, Kuo, Cheng-Yu, Li, Chao-Te, Lin, Lupin Chun-Che, Liu, Ching-Tang, Liu, Kuan-Yu, Lo, Wen-Ping, Lu, Li-Ming, MacDonald, Nicholas, Martin-Cocher, Pierre, Messias, Hugo, Meyer-Zhao, Zheng, Minter, Anthony, Nair, Dhanya G., Nishioka, Hiroaki, Norton, Timothy J., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Patel, Nimesh A, Pen, Ue-Li, Pidopryhora, Yurii, Pradel, Nicolas, Raffin, Philippe A., Rao, Ramprasad, Ruiz, Ignacio, Sanchez, Salvador, Shaw, Paul, Snow, William, Sridharan, T. K., Srinivasan, Ranjani, Tercero, Belén, Torne, Pablo, Traianou, Efthalia, Wagner, Jan, Walther, Craig, Wei, Ta-Shun, Yang, Jun, and Yu, Chen-Yu
Subjects: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies, General Relativity and Quantum Cosmology
Abstract: The nearby radio galaxy M87 is a prime target for studying black hole accretion and jet formation^{1,2}. Event Horizon Telescope observations of M87 in 2017, at a wavelength of 1.3 mm, revealed a ring-like structure, which was interpreted as gravitationally lensed emission around a central black hole^3. Here we report images of M87 obtained in 2018, at a wavelength of 3.5 mm, showing that the compact radio core is spatially resolved. High-resolution imaging shows a ring-like structure of 8.4_{-1.1}^{+0.5} Schwarzschild radii in diameter, approximately 50% larger than that seen at 1.3 mm. The outer edge at 3.5 mm is also larger than that at 1.3 mm. This larger and thicker ring indicates a substantial contribution from the accretion flow with absorption effects in addition to the gravitationally lensed ring-like emission. The images show that the edge-brightened jet connects to the accretion flow of the black hole. Close to the black hole, the emission profile of the jet-launching region is wider than the expected profile of a black-hole-driven jet, suggesting the possible presence of a wind associated with the accretion flow., Comment: 50 pages, 18 figures, 3 tables, author's version of the paper published in Nature
Published: 2023
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3. Electronics Instrumentation for the Greenland Telescope

Author: Kubo, Derek, Han, Chih-Chiang, Nishioka, Hiroaki, Chilson, Ryan, Srinivasan, Ranjani, Yen, Sheng- Feng, Fu, Kuo-Chieh, Jiang, Homin, Liu, Kuan-Yu, Wei, Ta-Shun, Huang, Chih-Wei, Yu, Chen- Yu, Oshiro, Peter, Chang, Shu-Hao, Chen, Chung-Cheng, Raffin, Philippe, Huang, Yau-De, Martin-Cocher, Pierre, Chen, Ming-Tang, Inoue, Makoto, Matsushita, Satoki, Asada, Keiichi, Koyama, Shoko, Koch, Patrick, Ho, Paul T. P., Shaw, Yang-Tai, Norton, Timothy J., Patel, Nimesh A., Doeleman, Shepherd S., Bintley, Daniel, Walther, Craig, Friberg, Per, Dempsey, Jessica, Ogawa, Hideo, Kimura, Kimihiro, Hasegawa, Yutaka, Liu, Ching-Tang, Han, Kou-Chang, Chang, Song-Chu, and Lu, Li-Ming
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The Greenland Telescope project has recently participated in an experiment to image the supermassive black hole shadow at the center of M87 using Very Long Baseline Interferometry technique in April of 2018. The antenna consists of the 12-m ALMA North American prototype antenna that was modified to support two auxiliary side containers and to withstand an extremely cold environment. The telescope is currently at Thule Air Base in Greenland with the long-term goal to move the telescope over the Greenland ice sheet to Summit Station. The GLT currently has a single cryostat which houses three dual polarization receivers that cover 84-96 GHz, 213-243 GHz and 271-377 GHz bands. A hydrogen maser frequency source in conjunction with high frequency synthesizers are used to generate the local oscillator references for the receivers. The intermediate frequency outputs of each receiver cover 4-8 GHz and are heterodyned to baseband for digitization within a set of ROACH-2 units then formatted for recording onto Mark-6 data recorders. A separate set of ROACH-2 units operating in parallel provides the function of auto-correlation for real-time spectral analysis. Due to the stringent instrumental stability requirements for interferometry a diagnostic test system was incorporated into the design. Tying all of the above equipment together is the fiber optic system designed to operate in a low temperature environment and scalable to accommodate a larger distance between the control module and telescope for Summit Station. A report on the progress of the above electronics instrumentation system will be provided., Comment: 19 pages, 37 figures, oral presentation at the June 2018 SPIE conference: Astronomical Telescopes + Instrumentation, in the section on Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX
Published: 2018

4. The Greenland Telescope: Antenna Retrofit Status and Future Plans

Author: Raffin, Philippe, Ho, Paul T. P., Asada, Keiichi, Blundell, Raymond, Bower, Geoffrey C., Burgos, Roberto, Chang, Chih-Cheng, Chen, Ming-Tang, Chu, You-Hua, Grimes, Paul K., Han, C. C., Huang, Chih-Wei L., Huang, Yau-De, Hsieh, Fang-Chia, Inoue, Makoto, Koch, Patrick M., Kubo, Derek, Leiker, Steve, Lin, Lupin, Liu, Ching-Tang, Lo, Shih-Hsiang, Martin-Cocher, Pierre, Matsushita, Satoki, Nakamura, Masanori, Meyer-Zhao, Zheng, Nishioka, Hiroaki, Norton, Tim, Nystrom, George, Paine, Scott N., Patel, Nimesh A., Pu, Hung-Yi, Snow, William, Sridharan, T. K., Srinivasan, Ranjani, and Wang, Jackie
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract: Since the ALMA North America Prototype Antenna was awarded to the Smithsonian Astrophysical Observatory (SAO), SAO and the Academia Sinica Institute of Astronomy & Astrophysics (ASIAA) are working jointly to relocate the antenna to Greenland. This paper shows the status of the antenna retrofit and the work carried out after the recommissioning and subsequent disassembly of the antenna at the VLA has taken place. The next coming months will see the start of the antenna reassembly at Thule Air Base. These activities are expected to last until the fall of 2017 when commissioning should take place. In parallel, design, fabrication and testing of the last components are taking place in Taiwan.
Published: 2016
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5. AMiBA: Cluster Sunyaev-Zel'dovich Effect Observations with the Expanded 13-Element Array

Author: Lin, Kai-Yang, Nishioka, Hiroaki, Wang, Fu-Cheng, Huang, Chih-Wei Locutus, Liao, Yu-Wei, Wu, Jiun-Huei Proty, Koch, Patrick M., Umetsu, Keiichi, Chen, Ming-Tang, Chan, Shun-Hsiang, Chang, Shu-Hao, Chang, Wen-Hsuan Lucky, Cheng, Tai-An, Duy, Hoang Ngoc, Fu, Szu-Yuan, Han, Chih-Chiang, Ho, Solomon, Ho, Ming-Feng, Ho, Paul T. P., Huang, Yau-De, Jiang, Homin, Kubo, Derek Y., Li, Chao-Te, Lin, Yu-Chiung, Liu, Guo-Chin, Martin-Cocher, Pierre, Molnar, Sandor M., Nunez, Emmanuel, Oshiro, Peter, Pai, Shang-Ping, Raffin, Philippe, Ridenour, Anthony, Shih, Chia-You, Stoebner, Sara, Teo, Giap-Siong, Yeh, Jia-Long Johnny, Williams, Joshua, and Birkinshaw, Mark
Subjects: Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The Yuan-Tseh Lee Array for Microwave Background Anisotropy (AMiBA) is a co-planar interferometer array operating at a wavelength of 3mm to measure the Sunyaev-Zeldovich effect (SZE) of galaxy clusters. In the first phase of operation -- with a compact 7-element array with 0.6m antennas (AMiBA-7) -- we observed six clusters at angular scales from 5\arcmin to 23\arcmin. Here, we describe the expansion of AMiBA to a 13-element array with 1.2m antennas (AMiBA-13), its subsequent commissioning, and our cluster SZE observing program. The most important changes compared to AMiBA-7 are (1) array re-configuration with baselines ranging from 1.4m to 4.8m covering angular scales from 2\arcmin to 11.5\arcmin, (2) thirteen new lightweight carbon-fiber-reinforced plastic (CFRP) 1.2m reflectors, and (3) additional correlators and six new receivers. From the AMiBA-13 SZE observing program, we present here maps of a subset of twelve clusters. In highlights, we combine AMiBA-7 and AMiBA-13 observations of Abell 1689 and perform a joint fitting assuming a generalized NFW pressure profile. Our cylindrically integrated Compton-y values for this cluster are consistent with the BIMA/OVRA, SZA, and Planck results. We report the first targeted SZE detection towards the optically selected galaxy cluster RCS J1447+0828, and we demonstrate the ability of AMiBA SZE data to serve as a proxy for the total cluster mass. Finally, we show that our AMiBA-SZE derived cluster masses are consistent with recent lensing mass measurements in the literature., Comment: 21 pages, 19 figures; Accepted by ApJ; Comparison between AMiBA-SZE and lensing masses has been newly included in the accepted version
Published: 2016
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6. First-generation Science Cases for Ground-based Terahertz Telescopes

Author: Hirashita, Hiroyuki, Koch, Patrick M., Matsushita, Satoki, Takakuwa, Shigehisa, Nakamura, Masanori, Asada, Keiichi, Liu, Hauyu Baobab, Urata, Yuji, Wang, Ming-Jye, Wang, Wei-Hao, Takahashi, Satoko, Tang, Ya-Wen, Chang, Hsian-Hong, Huang, Kuiyun, Morata, Oscar, Otsuka, Masaaki, Lin, Kai-Yang, Tsai, An-Li, Lin, Yen-Ting, Srinivasan, Sundar, Martin-Cocher, Pierre, Pu, Hung-Yi, Kemper, Francisca, Patel, Nimesh, Grimes, Paul, Huang, Yau-De, Han, Chih-Chiang, Huang, Yen-Ru, Nishioka, Hiroaki, Lin, Lupin Chun-Che, Zhang, Qizhou, Keto, Eric, Burgos, Roberto, Chen, Ming-Tang, Inoue, Makoto, and Ho, Paul T. P.
Subjects: Astrophysics - Astrophysics of Galaxies, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: Ground-based observations at terahertz (THz) frequencies are a newly explorable area of astronomy for the next ten years. We discuss science cases for a first-generation 10-m class THz telescope, focusing on the Greenland Telescope as an example of such a facility. We propose science cases and provide quantitative estimates for each case. The largest advantage of ground-based THz telescopes is their higher angular resolution (~ 4 arcsec for a 10-m dish), as compared to space or airborne THz telescopes. Thus, high-resolution mapping is an important scientific argument. In particular, we can isolate zones of interest for Galactic and extragalactic star-forming regions. The THz windows are suitable for observations of high-excitation CO lines and [N II] 205 um lines, which are scientifically relevant tracers of star formation and stellar feedback. Those lines are the brightest lines in the THz windows, so that they are suitable for the initiation of ground-based THz observations. THz polarization of star-forming regions can also be explored since it traces the dust population contributing to the THz spectral peak. For survey-type observations, we focus on ``sub-THz'' extragalactic surveys, whose uniqueness is to detect galaxies at redshifts z ~ 1--2, where the dust emission per comoving volume is the largest in the history of the Universe. Finally we explore possibilities of flexible time scheduling, which enables us to monitor active galactic nuclei, and to target gamma-ray burst afterglows. For these objects, THz and submillimeter wavelength ranges have not yet been explored., Comment: 39 pages, 17 figures, accepted for publication in PASJ (as a review paper)
Published: 2015
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7. The Greenland Telescope (GLT): Antenna status and future plans

Author: Raffin, Philippe, Algaba-Marcos, Juan Carlos, Asada, Keichi, Blundell, Raymond, Burgos, Roberto, Chang, Chih-Cheng, Chen, Ming-Tang, Christensen, Robert, Grimes, Paul K., Han, C. C., Ho, Paul T. P., Huang, Yau-De, Inoue, Makoto, Koch, Patrick M., Kubo, Derek, Leiker, Steve, Liu, Ching-Tang, Martin-Cocher, Pierre, Matsushita, Satoki, Nakamura, Masanori, Nishioka, Hiroaki, Nystrom, George, Paine, Scott N., Patel, Nimesh A., Pradel, Nicolas, Pu, Hung-Yi, Shen, H. -Y., Snow, William, Sridharan, T. K., Srinivasan, Ranjani, Tong, Edward, and Wang, Jackie
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The ALMA North America Prototype Antenna was awarded to the Smithsonian Astrophysical Observatory (SAO) in 2011. SAO and the Academia Sinica Institute of Astronomy & Astrophysics (ASIAA), SAO's main partner for this project, are working jointly to relocate the antenna to Greenland to carry out millimeter and submillimeter VLBI observations. This paper presents the work carried out on upgrading the antenna to enable operation in the Arctic climate by the GLT Team to make this challenging project possible, with an emphasis on the unexpected telescope components that had to be either redesigned or changed. Five-years of inactivity, with the antenna laying idle in the desert of New Mexico, coupled with the extreme weather conditions of the selected site in Greenland have it necessary to significantly refurbish the antenna. We found that many components did need to be replaced, such as the antenna support cone, the azimuth bearing, the carbon fiber quadrupod, the hexapod, the HVAC, the tiltmeters, the antenna electronic enclosures housing servo and other drive components, and the cables. We selected Vertex, the original antenna manufacturer, for the main design work, which is in progress. The next coming months will see the major antenna components and subsystems shipped to a site of the US East Coast for test-fitting the major antenna components, which have been retrofitted. The following step will be to ship the components to Greenland to carry out VLBI and single dish observations. Antenna reassembly at Summit Station should take place during the summer of 2018., Comment: 10 pages, 8 figures
Published: 2014
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Author: Raymond, Alexander W., Doeleman, Sheperd S., Asada, Keiichi, Blackburn, Lindy, Bower, Geoffrey C., Bremer, Michael, Broguiere, Dominique, Chen, Ming-Tang, Crew, Geoffrey B., Dornbusch, Sven, Fish, Vincent L., García, Roberto, Gentaz, Olivier, Goddi, Ciriaco, Han, Chih-Chiang, Hecht, Michael H., Huang, Yau-De, Janssen, Michael, Keating, Garrett K., Koay, Jun Yi, Krichbaum, Thomas P., Lo, Wen-Ping, Matsushita, Satoki, Matthews, Lynn D., Moran, James M., Norton, Timothy J., Patel, Nimesh, Pesce, Dominic W., Ramakrishnan, Venkatessh, Rottmann, Helge, Roy, Alan L., Sánchez, Salvador, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Wagner, Jan, Weintroub, Jonathan, Wielgus, Maciek, Young, André, Akiyama, Kazunori, Albentosa-Ruíz, Ezequiel, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blundell, Raymond, Bouman, Katherine L., Boyce, Hope, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fomalont, Edward, Fontana, Anne-Laure, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., Georgiev, Boris, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Kubo, Derek, Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mahieu, Sylvain, Maier, Doris, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares Sánchez, Héctor Raúl, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Pen, Ue-Li, Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Principe, Giacomo, Psaltis, Dimitrios, Pu, Hung-Yi, Raffin, Philippe A., Rao, Ramprasad, Rawlings, Mark G., Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Sosapanta Salas, León David, Souccar, Kamal, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Toma, Kenji, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Wharton, Robert, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, Zhao, Shan-Shan, Raymond, Alexander W., Doeleman, Sheperd S., Asada, Keiichi, Blackburn, Lindy, Bower, Geoffrey C., Bremer, Michael, Broguiere, Dominique, Chen, Ming-Tang, Crew, Geoffrey B., Dornbusch, Sven, Fish, Vincent L., García, Roberto, Gentaz, Olivier, Goddi, Ciriaco, Han, Chih-Chiang, Hecht, Michael H., Huang, Yau-De, Janssen, Michael, Keating, Garrett K., Koay, Jun Yi, Krichbaum, Thomas P., Lo, Wen-Ping, Matsushita, Satoki, Matthews, Lynn D., Moran, James M., Norton, Timothy J., Patel, Nimesh, Pesce, Dominic W., Ramakrishnan, Venkatessh, Rottmann, Helge, Roy, Alan L., Sánchez, Salvador, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Wagner, Jan, Weintroub, Jonathan, Wielgus, Maciek, Young, André, Akiyama, Kazunori, Albentosa-Ruíz, Ezequiel, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blundell, Raymond, Bouman, Katherine L., Boyce, Hope, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fomalont, Edward, Fontana, Anne-Laure, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., Georgiev, Boris, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Kubo, Derek, Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mahieu, Sylvain, Maier, Doris, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares Sánchez, Héctor Raúl, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Pen, Ue-Li, Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Principe, Giacomo, Psaltis, Dimitrios, Pu, Hung-Yi, Raffin, Philippe A., Rao, Ramprasad, Rawlings, Mark G., Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Sosapanta Salas, León David, Souccar, Kamal, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Toma, Kenji, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Wharton, Robert, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, and Zhao, Shan-Shan
Published: 2024

9. The persistent shadow of the supermassive black hole of M 87

Author: Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Asada, Keiichi, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Baloković, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blackburn, Lindy, Blundell, Raymond, Bouman, Katherine L., Bower, Geoffrey C., Boyce, Hope, Bremer, Michael, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Ming-Tang, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Crew, Geoffrey B., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Doeleman, Sheperd S., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fish, Vincent L., Fomalont, Edward, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., García, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Violette Impellizzeri, C. M., Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Koay, Jun Yi, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Krichbaum, Thomas P., Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares, Héctor, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez, Salvador, Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Salas, León David Sosapanta, Souccar, Kamal, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Wagner, Jan, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Weintroub, Jonathan, Wharton, Robert, Wielgus, Maciek, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Young, André, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Anton Zensus, J., Zhang, Shuo, Zhao, Guang-Yao, Zhao, Shan-Shan, Allardi, Alexander, Chang, Shu-Hao, Chang, Chih-Cheng, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Faber, Aaron, Gale, David M., Han, Chih-Chiang, Han, Kuo-Chang, Hasegawa, Yutaka, Hernández-Rebollar, José Luis, Huang, Yau-De, Jiang, Homin, Jinchi, Hao, Kimura, Kimihiro, Kubo, Derek, Li, Chao-Te, Lin, Lupin C.-C., Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Martin-Cocher, Pierre, Meyer-Zhao, Zheng, Montaña, Alfredo, Moraghan, Anthony, Moreno-Nolasco, Marcos Emir, Nishioka, Hiroaki, Norton, Timothy J., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Pradel, Nicolas, Principe, Giacomo, Raffin, Philippe, Rodríguez-Montoya, Iván, Shaw, Paul, Snow, William, Sridharan, Tirupati Kumara, Srinivasan, Ranjani, Wei, Ta-Shun, Yu, Chen-Yu, Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Asada, Keiichi, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Baloković, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blackburn, Lindy, Blundell, Raymond, Bouman, Katherine L., Bower, Geoffrey C., Boyce, Hope, Bremer, Michael, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Ming-Tang, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Crew, Geoffrey B., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Doeleman, Sheperd S., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fish, Vincent L., Fomalont, Edward, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., García, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Violette Impellizzeri, C. M., Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Koay, Jun Yi, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Krichbaum, Thomas P., Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares, Héctor, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez, Salvador, Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Salas, León David Sosapanta, Souccar, Kamal, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Wagner, Jan, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Weintroub, Jonathan, Wharton, Robert, Wielgus, Maciek, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Young, André, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Anton Zensus, J., Zhang, Shuo, Zhao, Guang-Yao, Zhao, Shan-Shan, Allardi, Alexander, Chang, Shu-Hao, Chang, Chih-Cheng, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Faber, Aaron, Gale, David M., Han, Chih-Chiang, Han, Kuo-Chang, Hasegawa, Yutaka, Hernández-Rebollar, José Luis, Huang, Yau-De, Jiang, Homin, Jinchi, Hao, Kimura, Kimihiro, Kubo, Derek, Li, Chao-Te, Lin, Lupin C.-C., Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Martin-Cocher, Pierre, Meyer-Zhao, Zheng, Montaña, Alfredo, Moraghan, Anthony, Moreno-Nolasco, Marcos Emir, Nishioka, Hiroaki, Norton, Timothy J., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Pradel, Nicolas, Principe, Giacomo, Raffin, Philippe, Rodríguez-Montoya, Iván, Shaw, Paul, Snow, William, Sridharan, Tirupati Kumara, Srinivasan, Ranjani, Wei, Ta-Shun, and Yu, Chen-Yu
Published: 2024
Full Text: View/download PDF

10. This title is unavailable for guests, please login to see more information.

Author: Raymond, Alexander W., Doeleman, Sheperd S., Asada, Keiichi, Blackburn, Lindy, Bower, Geoffrey C., Bremer, Michael, Broguiere, Dominique, Chen, Ming-Tang, Crew, Geoffrey B., Dornbusch, Sven, Fish, Vincent L., García, Roberto, Gentaz, Olivier, Goddi, Ciriaco, Han, Chih-Chiang, Hecht, Michael H., Huang, Yau-De, Janssen, Michael, Keating, Garrett K., Koay, Jun Yi, Krichbaum, Thomas P., Lo, Wen-Ping, Matsushita, Satoki, Matthews, Lynn D., Moran, James M., Norton, Timothy J., Patel, Nimesh, Pesce, Dominic W., Ramakrishnan, Venkatessh, Rottmann, Helge, Roy, Alan L., Sánchez, Salvador, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Wagner, Jan, Weintroub, Jonathan, Wielgus, Maciek, Young, André, Akiyama, Kazunori, Albentosa-Ruíz, Ezequiel, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blundell, Raymond, Bouman, Katherine L., Boyce, Hope, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fomalont, Edward, Fontana, Anne-Laure, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., Georgiev, Boris, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Kubo, Derek, Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mahieu, Sylvain, Maier, Doris, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares Sánchez, Héctor Raúl, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Pen, Ue-Li, Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Principe, Giacomo, Psaltis, Dimitrios, Pu, Hung-Yi, Raffin, Philippe A., Rao, Ramprasad, Rawlings, Mark G., Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Sosapanta Salas, León David, Souccar, Kamal, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Toma, Kenji, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Wharton, Robert, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, Zhao, Shan-Shan, Raymond, Alexander W., Doeleman, Sheperd S., Asada, Keiichi, Blackburn, Lindy, Bower, Geoffrey C., Bremer, Michael, Broguiere, Dominique, Chen, Ming-Tang, Crew, Geoffrey B., Dornbusch, Sven, Fish, Vincent L., García, Roberto, Gentaz, Olivier, Goddi, Ciriaco, Han, Chih-Chiang, Hecht, Michael H., Huang, Yau-De, Janssen, Michael, Keating, Garrett K., Koay, Jun Yi, Krichbaum, Thomas P., Lo, Wen-Ping, Matsushita, Satoki, Matthews, Lynn D., Moran, James M., Norton, Timothy J., Patel, Nimesh, Pesce, Dominic W., Ramakrishnan, Venkatessh, Rottmann, Helge, Roy, Alan L., Sánchez, Salvador, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Wagner, Jan, Weintroub, Jonathan, Wielgus, Maciek, Young, André, Akiyama, Kazunori, Albentosa-Ruíz, Ezequiel, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blundell, Raymond, Bouman, Katherine L., Boyce, Hope, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fomalont, Edward, Fontana, Anne-Laure, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., Georgiev, Boris, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Kubo, Derek, Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mahieu, Sylvain, Maier, Doris, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares Sánchez, Héctor Raúl, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Pen, Ue-Li, Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Principe, Giacomo, Psaltis, Dimitrios, Pu, Hung-Yi, Raffin, Philippe A., Rao, Ramprasad, Rawlings, Mark G., Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Sosapanta Salas, León David, Souccar, Kamal, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Toma, Kenji, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Wharton, Robert, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, and Zhao, Shan-Shan
Published: 2024

11. This title is unavailable for guests, please login to see more information.

Author: Raymond, Alexander W., Doeleman, Sheperd S., Asada, Keiichi, Blackburn, Lindy, Bower, Geoffrey C., Bremer, Michael, Broguiere, Dominique, Chen, Ming-Tang, Crew, Geoffrey B., Dornbusch, Sven, Fish, Vincent L., García, Roberto, Gentaz, Olivier, Goddi, Ciriaco, Han, Chih-Chiang, Hecht, Michael H., Huang, Yau-De, Janssen, Michael, Keating, Garrett K., Koay, Jun Yi, Krichbaum, Thomas P., Lo, Wen-Ping, Matsushita, Satoki, Matthews, Lynn D., Moran, James M., Norton, Timothy J., Patel, Nimesh, Pesce, Dominic W., Ramakrishnan, Venkatessh, Rottmann, Helge, Roy, Alan L., Sánchez, Salvador, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Wagner, Jan, Weintroub, Jonathan, Wielgus, Maciek, Young, André, Akiyama, Kazunori, Albentosa-Ruíz, Ezequiel, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blundell, Raymond, Bouman, Katherine L., Boyce, Hope, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fomalont, Edward, Fontana, Anne-Laure, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., Georgiev, Boris, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Kubo, Derek, Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mahieu, Sylvain, Maier, Doris, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares Sánchez, Héctor Raúl, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Pen, Ue-Li, Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Principe, Giacomo, Psaltis, Dimitrios, Pu, Hung-Yi, Raffin, Philippe A., Rao, Ramprasad, Rawlings, Mark G., Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Sosapanta Salas, León David, Souccar, Kamal, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Toma, Kenji, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Wharton, Robert, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, Zhao, Shan-Shan, Raymond, Alexander W., Doeleman, Sheperd S., Asada, Keiichi, Blackburn, Lindy, Bower, Geoffrey C., Bremer, Michael, Broguiere, Dominique, Chen, Ming-Tang, Crew, Geoffrey B., Dornbusch, Sven, Fish, Vincent L., García, Roberto, Gentaz, Olivier, Goddi, Ciriaco, Han, Chih-Chiang, Hecht, Michael H., Huang, Yau-De, Janssen, Michael, Keating, Garrett K., Koay, Jun Yi, Krichbaum, Thomas P., Lo, Wen-Ping, Matsushita, Satoki, Matthews, Lynn D., Moran, James M., Norton, Timothy J., Patel, Nimesh, Pesce, Dominic W., Ramakrishnan, Venkatessh, Rottmann, Helge, Roy, Alan L., Sánchez, Salvador, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Wagner, Jan, Weintroub, Jonathan, Wielgus, Maciek, Young, André, Akiyama, Kazunori, Albentosa-Ruíz, Ezequiel, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Bandyopadhyay, Bidisha, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blundell, Raymond, Bouman, Katherine L., Boyce, Hope, Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Bronzwaer, Thomas, Bustamante, Sandra, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chang, Dominic O., Chatterjee, Koushik, Chatterjee, Shami, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Crawford, Thomas M., Cruz-Osorio, Alejandro, Cui, Yuzhu, Dahale, Rohan, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Dihingia, Indu K., Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fomalont, Edward, Fontana, Anne-Laure, Ford, H. Alyson, Foschi, Marianna, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., Georgiev, Boris, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Jones, Adam C., Joshi, Abhishek V., Jung, Taehyun, Karuppusamy, Ramesh, Kawashima, Tomohisa, Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Joana A., Kramer, Michael, Kubo, Derek, Kuo, Cheng-Yu, La Bella, Noemi, Lee, Sang-Sung, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lowitz, Amy E., Lu, Ru-Sen, MacDonald, Nicholas R., Mahieu, Sylvain, Maier, Doris, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Medeiros, Lia, Menten, Karl M., Mizuno, Izumi, Mizuno, Yosuke, Montgomery, Joshua, Moriyama, Kotaro, Moscibrodzka, Monika, Mulaudzi, Wanga, Müller, Cornelia, Müller, Hendrik, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Ni, Chunchong, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares Sánchez, Héctor Raúl, Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Pen, Ue-Li, Piétu, Vincent, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Principe, Giacomo, Psaltis, Dimitrios, Pu, Hung-Yi, Raffin, Philippe A., Rao, Ramprasad, Rawlings, Mark G., Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Romero-Cañizales, Cristina, Ros, Eduardo, Roshanineshat, Arash, Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Sosapanta Salas, León David, Souccar, Kamal, Stanway, Joshua S., Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Toma, Kenji, Toscano, Teresa, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Ward-Thompson, Derek, Wardle, John, Washington, Jasmin E., Wharton, Robert, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yadlapalli, Nitika, Yamaguchi, Paul, Yfantis, Aristomenis, Yoon, Doosoo, Younsi, Ziri, Yu, Wei, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, and Zhao, Shan-Shan
Published: 2024

12. Platform Deformation Phase Correction for the AMiBA-13 Co-planar Interferometer

Author: Liao, Yu-Wei, Lin, Kai-Yang, Huang, Yau-De, Wu, Jiun-Huei Proty, Ho, Paul T. P., Chen, Ming-Tang, Huang, Chih-Wei Locutus, Koch, Patrick M., Nishioka, Hiroaki, Cheng, Tai-An, Fu, Szu-Yuan, Liu, Guo-Chin, Molnar, Sandor M., Umetsu, Keiichi, Wang, Fu-Cheng, Chang, Yu-Yen, Han, Chih-Chiang, Li, Chao-Te, Martin-Cocher, Pierre, and Oshiro, Peter
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Extragalactic Astrophysics
Abstract: We present a new way to solve the platform deformation problem of co-planar interferometers. The platform of a co-planar interferometer can be deformed due to driving forces and gravity. A deformed platform will induce extra components into the geometric delay of each baseline, and change the phases of observed visibilities. The reconstructed images will also be diluted due to the errors of the phases. The platform deformations of The Yuan-Tseh Lee Array for Microwave Background Anisotropy (AMiBA) were modelled based on photogrammetry data with about 20 mount pointing positions. We then used the differential optical pointing error between two optical telescopes to fit the model parameters in the entire horizontal coordinate space. With the platform deformation model, we can predict the errors of the geometric phase delays due to platform deformation with given azimuth and elevation of the targets and calibrators. After correcting the phases of the radio point sources in the AMiBA interferometric data, we recover 50% - 70% flux loss due to phase errors. This allows us to restore more than 90% of a source flux. The method outlined in this work is not only applicable to the correction of deformation for other co-planar telescopes but also to single dish telescopes with deformation problems. This work also forms the basis of the upcoming science results of AMiBA-13., Comment: 12 pages, 11 figures
Published: 2013
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13. 1.2 Meter Shielded Cassegrain Antenna for Close-Packed Radio Interferometer

Author: Koch, Patrick M., Raffin, Philippe, Huang, Yau-De, Chen, Ming-Tang, Han, Chih-Chiang, Lin, Kai-Yang, Altamirano, Pablo, Granet, Christophe, Ho, Paul T. P., Huang, Chih-Wei L., Kesteven, Michael, Li, Chao-Te, Liao, Yu-Wei, Liu, Guo-Chin, Nishioka, Hiroaki, Ong, Ching-Long, Oshiro, Peter, Umetsu, Keiichi, Wang, Fu-Cheng, and Wu, Jiun-Huei Proty
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Interferometric millimeter observations of the cosmic microwave background and clusters of galaxies with arcmin resolutions require antenna arrays with short spacings. Having all antennas co-mounted on a single steerable platform sets limits to the overall weight. A 25 kg lightweight novel carbon-fiber design for a 1.2 m diameter Cassegrain antenna is presented. The finite element analysis predicts excellent structural behavior under gravity, wind and thermal load. The primary and secondary mirror surfaces are aluminum coated with a thin TiO$_2$ top layer for protection. A low beam sidelobe level is achieved with a Gaussian feed illumination pattern with edge taper, designed based on feedhorn antenna simulations and verified in a far field beam pattern measurement. A shielding baffle reduces inter-antenna coupling to below $\sim$ -135 dB. The overall antenna efficiency, including a series of efficiency factors, is estimated to be around 60%, with major losses coming from the feed spillover and secondary blocking. With this new antenna, a detection rate of about 50 clusters per year is anticipated in a 13-element array operation., Comment: 35 pages, 14 figures; accepted for publication in PASP
Published: 2010
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14. Contamination of the Central Sunyaev--Zel'dovich Decrements in AMiBA Galaxy Cluster Observations

Author: Liu, Guo-Chin, Birkinshaw, Mark, Wu, Jiun-Huei Proty, Ho, Paul T. P., Huang, Chih-Wei Locutus, Liao, Yu-Wei, Lin, Kai-Yang, Molnar, Sandor M., Nishioka, Hiroaki, Koch, Patrick M., Umetsu, Keiichi, Wang, Fu-Cheng, Altamirano, Pablo, Chang, Chia-Hao, Chang, Shu-Hao, Chang, Su-Wei, Chen, Ming-Tang, Han, Chih-Chiang, Huang, Yau-De, Hwang, Yuh-Jing, Jiang, Homin, Kesteven, Michael, Kubo, Derek, Li, Chao-Te, Martin-Cocher, Pierre, Oshiro, Peter, Raffin, Philippe, Wei, Tashun, and Wilson, Warwick
Subjects: Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We investigate the contamination of the Sunyaev--Zel'dovich (SZ) effect for six galaxy clusters, A1689, A1995, A2142, A2163, A2261, and A2390, observed by the Y. T. Lee Array for Microwave Background Anisotropy during 2007. With the range of baselines used, we find that the largest effect (of order 13%-50% of the central SZ flux density) comes from primary anisotropies in the cosmic microwave background and exceeds the thermal noise in all six cases. Contamination from discrete radio sources is estimated to be at a level of (3%-60%) of the central SZ flux density. We use the statistics of these contaminating sources to estimate and correct the errors in the measured SZ effects of these clusters., Comment: 22 pages, 2 figures
Published: 2010
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15. AMiBA Wideband Analog Correlator

Author: Li, Chao-Te, Kubo, Derek Y., Wilson, Warwick, Lin, Kai-Yang, Chen, Ming-Tang, Ho, P. T. P., Chen, Chung-Cheng, Han, Chih-Chiang, Oshiro, Peter, Martin-Cocher, Pierre, Chang, Chia-Hao, Chang, Shu-Hao, Altamirano, Pablo, Jiang, Homin, Chiueh, Tzi-Dar, Lien, Chun-Hsien, Wang, Huei, Wei, Ray-Ming, Yang, Chia-Hsiang, Peterson, Jeffrey B., Chang, Su-Wei, Huang, Yau-De, Hwang, Yuh-Jing, Kesteven, Michael, Koch, Patrick, Liu, Guo-Chin, Nishioka, Hiroaki, Umetsu, Keiichi, Wei, Tashun, and Wu, Jiun-Huei Proty
Subjects: Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: A wideband analog correlator has been constructed for the Yuan-Tseh Lee Array for Microwave Background Anisotropy. Lag correlators using analog multipliers provide large bandwidth and moderate frequency resolution. Broadband IF distribution, backend signal processing and control are described. Operating conditions for optimum sensitivity and linearity are discussed. From observations, a large effective bandwidth of around 10 GHz has been shown to provide sufficient sensitivity for detecting cosmic microwave background variations., Comment: 28 pages, 23 figures, ApJ in press.
Published: 2010
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16. AMiBA: Sunyaev-Zel'dovich effect derived properties and scaling relations of massive galaxy clusters

Author: Liao, Yu-Wei, Wu, Jiun-Huei Proty, Ho, Paul T. P., Huang, Chih-Wei Locutus, Koch, Patrick M., Lin, Kai-Yang, Liu, Guo-Chin, Molnar, Sandor M., Nishioka, Hiroaki, Umetsu, Keiichi, Wang, Fu-Cheng, Altamirano, Pablo, Birkinshaw, Mark, Chang, Chia-Hao, Chang, Shu-Hao, Chang, Su-Wei, Chen, Ming-Tang, Chiueh, Tzihong, Han, Chih-Chiang, Huang, Yau-De, Hwang, Yuh-Jing, Jiang, Homin, Kesteven, Michael, Kubo, Derek, Li, Chao-Te, Martin-Cocher, Pierre, Oshiro, Peter, Raffin, Philippe, Wei, Tashun, and Wilson, Warwick
Subjects: Astrophysics - Cosmology and Extragalactic Astrophysics
Abstract: The Sunyaev-Zel'dovich Effect (SZE) has been observed toward six massive galaxy clusters, at redshifts 0.091 \leq z \leq 0.322 in the 86-102 GHz band with the Y. T. Lee Array for Microwave Background Anisotropy (AMiBA). We modify an iterative method, based on the isothermal \beta-models, to derive the electron temperature T_e, total mass M_t, gas mass M_g, and integrated Compton Y within r_2500, from the AMiBA SZE data. Non-isothermal universal temperature profile (UTP) \beta models are also considered in this paper. These results are in good agreement with those deduced from other observations. We also investigate the embedded scaling relations, due to the assumptions that have been made in the method we adopted, between these purely SZE-deduced T_e, M_t, M_g and Y. Our results suggest that cluster properties may be measurable with SZE observations alone. However, the assumptions built into the pure-SZE method bias the results of scaling relation estimations and need further study., Comment: Accepted by ApJ; 9 pages, 6 figures, 4 tables
Published: 2010
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17. AMiBA: scaling relations between the integrated Compton-y and X-ray derived temperature, mass, and luminosity

Author: Huang, Chih-Wei Locutus, Wu, Jiun-Huei Proty, Ho, Paul T. P., Koch, Patrick M., Liao, Yu-Wei, Lin, Kai-Yang, Liu, Guo-Chin, Molnar, Sandor M., Nishioka, Hiroaki, Umetsu, Keiichi, Wang, Fu-Cheng, Altamirano, Pablo, Birkinshaw, Mark, Chang, Chia-Hao, Chang, Shu-Hao, Chang, Su-Wei, Chen, Ming-Tang, Chiueh, Tzihong, Han, Chih-Chiang, Huang, Yau-De, Hwang, Yuh-Jing, Jiang, Homin, Kesteven, Michael, Kubo, Derek, Li, Chao-Te, Martin-Cocher, Pierre, Oshiro, Peter, Raffin, Philippe, Wei, Tashun, and Wilson, Warwick
Subjects: Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We investigate the scaling relations between the X-ray and the thermal Sunyaev-Zel'dovich Effect (SZE) properties of clusters of galaxies, using data taken during 2007 by the Y.T. Lee Array for Microwave Background Anisotropy (AMiBA) at 94 GHz for the six clusters A1689, A1995, A2142, A2163, A2261, and A2390. The scaling relations relate the integrated Compton-y parameter Y_{2500} to the X-ray derived gas temperature T_{e}, total mass M_{2500}, and bolometric luminosity L_X within r_{2500}. Our results for the power-law index and normalization are both consistent with the self-similar model and other studies in the literature except for the Y_{2500}-L_X relation, for which a physical explanation is given though further investigation may be still needed. Our results not only provide confidence for the AMiBA project but also support our understanding of galaxy clusters., Comment: Accepted by ApJ; 8 pages, 3 figures, 5 tables
Published: 2009
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18. Platform Deformation Refined Pointing and Phase Correction for the AMiBA Hexapod Telescope

Author: Koch, Patrick M., Kesteven, Michael, Chang, Yu-Yen, Huang, Yau-De, Raffin, Philippe, Chen, Ke-Yung, Chereau, Guillaume, Chen, Ming-Tang, Ho, Paul T. P., Huang, Chih-Wie, Ibanez-Romano, Fabiola, Jiang, Homin, Liao, Yu-Wei, Lin, Kai-Yang, Liu, Guo-Chin, Molnar, Sandor M., Nishioka, Hiroaki, Umetsu, Keiichi, Wang, Fu-Cheng, Wu, Jiun-Huei Proty, Altamirano, Pablo, Chang, Chia-Hao, Chang, Shu-Hao, Chang, Su-Wei, Han, Chi-Chiang, Kubo, Derek, Li, Chao-Te, Martin-Cocher, Pierre, and Oshiro, Peter
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Extragalactic Astrophysics
Abstract: The Array for Microwave Background Anisotropy (AMiBA) is a radio interferometer for research in cosmology, currently operating 7 0.6m diameter antennas co-mounted on a 6m diameter platform driven by a hexapod mount. AMiBA is currently the largest hexapod telescope. We briefly summarize the hexapod operation with the current pointing error model. We then focus on the upcoming 13-element expansion with its potential difficulties and solutions. Photogrammetry measurements of the platform reveal deformations at a level which can affect the optical pointing and the receiver radio phase. In order to prepare for the 13-element upgrade, two optical telescopes are installed on the platform to correlate optical pointing tests. Being mounted on different locations, the residuals of the two sets of pointing errors show a characteristic phase and amplitude difference as a function of the platform deformation pattern. These results depend on the telescope's azimuth, elevation and polarization position. An analytical model for the deformation is derived in order to separate the local deformation induced error from the real hexapod pointing error. Similarly, we demonstrate that the deformation induced radio phase error can be reliably modeled and calibrated, which allows us to recover the ideal synthesized beam in amplitude and shape of up to 90% or more. The resulting array efficiency and its limits are discussed based on the derived errors., Comment: Proc. SPIE, Vol. 7018, 70181L (2008), Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation; uses spie.cls
Published: 2009

19. AMiBA: Broadband Heterodyne CMB Interferometry

Author: Chen, Ming-Tang, Li, Chao-Te, Hwang, Yuh-Jing, Jiang, Homin, Altamirano, Pablo, Chang, Chia-Hao, Chang, Shu-Hao, Chang, Su-Wei, Chiueh, Tzi-Dar, Chu, Tah-Hsiung, Han, Chih-Chiang, Huang, Yau-De, Kesteven, Michael, Kubo, Derek, Martin-Cocher, Pierre, Oshiro, Peter, Raffin, Philippe, Wei, Tashun, Wang, Huei, Wilson, Warwick, Ho, Paul T. P., Huang, Chih-Wei, Koch, Patrick, Liao, Yu-Wei, Lin, Kai-Yang, Liu, Guo-Chin, Molnar, Sandor M., Nishioka, Hiroaki, Umetsu, Keiichi, Wang, Fu-Cheng, and Wu, Jiun-Huei Proty
Subjects: Astrophysics - Cosmology and Extragalactic Astrophysics
Abstract: The Y. T. Lee Array for Microwave Background (AMiBA) has reported the first science results on the detection of galaxy clusters via the Sunyaev Zel'dovich effect. The science objectives required small reflectors in order to sample large scale structures (20') while interferometry provided modest resolutions (2'). With these constraints, we designed for the best sensitivity by utilizing the maximum possible continuum bandwidth matched to the atmospheric window at 86-102GHz, with dual polarizations. A novel wide-band analog correlator was designed that is easily expandable for more interferometer elements. MMIC technology was used throughout as much as possible in order to miniaturize the components and to enhance mass production. These designs will find application in other upcoming astronomy projects. AMiBA is now in operations since 2006, and we are in the process to expand the array from 7 to 13 elements., Comment: 10 pages, 6 figures, ApJ in press; a version with high resolution figures available at http://www.asiaa.sinica.edu.tw/~keiichi/upfiles/AMiBA7/mtc_highreso.pdf
Published: 2009
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20. AMiBA: System Performance

Author: Lin, Kai-Yang, Li, Chao-Te, Ho, Paul T. P., Huang, Chih-Wei Locutus, Liao, Yu-Wei, Liu, Guo-Chin, Koch, Patrick M., Molnar, Sandor M., Nishioka, Hiroaki, Umetsu, Keiichi, Wang, Fu-Cheng, Wu, Jiun-Huei Proty, Kestevan, Michael, Birkinshaw, Mark, Altamirano, Pablo, Chang, Chia-Hao, Chang, Shu-Hao, Chang, Su-Wei, Chen, Ming-Tang, Martin-Cocher, Pierre, Han, Chih-Chiang, Huang, Yau-De, Hwang, Yuh-Jing, Ibañez-Roman, Fabiola, Jiang, Homin, Kubo, Derek Y., Oshiro, Peter, Raffin, Philippe, Wei, Tashun, Wilson, Warwick, Chen, Ke-Jung, and Chiueh, Tzihong
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Extragalactic Astrophysics
Abstract: The Y.T. Lee Array for Microwave Background Anisotropy (AMiBA) started scientific operation in early 2007. This work describes the optimization of the system performance for the measurements of the Sunyaev-Zel'dovich effect for six massive galaxy clusters at redshifts $0.09 - 0.32$. We achieved a point source sensitivity of $63\pm 7$ mJy with the seven 0.6m dishes in 1 hour of on-source integration in 2-patch differencing observations. We measured and compensated for the delays between the antennas of our platform-mounted interferometer. Beam switching was used to cancel instrumental instabilities and ground pick up. Total power and phase stability were good on time scales of hours, and the system was shown to integrate down on equivalent timescales of 300 hours per baseline/correlation, or about 10 hours for the entire array. While the broadband correlator leads to good sensitivity, the small number of lags in the correlator resulted in poorly measured bandpass response. We corrected for this by using external calibrators (Jupiter and Saturn). Using Jupiter as the flux standard, we measured the disk brightness temperature of Saturn to be $149^{+5}_{-12}$ K., Comment: 9 pages, 7 figures, 1 table, accepted for publication in ApJ
Published: 2009
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21. The AMiBA Hexapod Telescope Mount

Author: Koch, Patrick M., Kesteven, Michael, Nishioka, Hiroaki, Jiang, Homin, Lin, Kai-Yang, Umetsu, Keiichi, Huang, Yau-De, Raffin, Philippe, Chen, Ke-Jung, Ibanez-Romano, Fabiola, Chereau, Guillaume, Huang, Chih-Wei Locutus, Chen, Ming-Tang, Ho, Paul T. P., Pausch, Konrad, Willmeroth, Klaus, Altamirano, Pablo, Chang, Chia-Hao, Chang, Shu-Hao, Chang, Su-Wei, Han, Chih-Chiang, Kubo, Derek, Li, Chao-Te, Liao, Yu-Wei, Liu, Guo-Chin, Martin-Cocher, Pierre, Oshiro, Peter, Wang, Fu-Cheng, Wei, Ta-Shun, Wu, Jiun-Huei Proty, Birkinshaw, Mark, Chiueh, Tzihong, Lancaster, Katy, Lo, Kwok Yung, Martin, Robert N., Molnar, Sandor M., Patt, Ferdinand, and Romeo, Bob
Subjects: Astrophysics - Cosmology and Extragalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: AMiBA is the largest hexapod astronomical telescope in current operation. We present a description of this novel hexapod mount with its main mechanical components -- the support cone, universal joints, jack screws, and platform -- and outline the control system with the pointing model and the operating modes that are supported. The AMiBA hexapod mount performance is verified based on optical pointing tests and platform photogrammetry measurements. The photogrammetry results show that the deformations in the inner part of the platform are less than 120 micron rms. This is negligible for optical pointing corrections, radio alignment and radio phase errors for the currently operational 7-element compact configuration. The optical pointing error in azimuth and elevation is successively reduced by a series of corrections to about 0.4 arcmin rms which meets our goal for the 7-element target specifications., Comment: Accepted for ApJ, 33 pages, 15 figures
Published: 2009
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22. Tests of AMiBA Data Integrity

Author: Nishioka, Hiroaki, Wang, Fu-Cheng, Wu, Jiun-Huei Proty, Ho, Paul T. P., Huang, Chih-Wei Locutus, Koch, Patrick M., Liao, Yu-Wei, Lin, Kai-Yang, Liu, Guo-Chin, Molnar, Sandor M., Umetsu, Keiichi, Birkinshaw, Mark, Altamirano, Pablo, Chang, Chia-Hao, Chang, Shu-Hao, Chang, Su-Wei, Chen, Ming-Tang, Han, Chih-Chiang, Huang, Yau-De, Hwang, Yuh-Jing, Jiang, Homin, Kesteven, Michael, Kubo, Derek Y., Li, Chao-Te, Martin-Cocher, Pierre, Oshiro, Peter, Raffin, Philippe, Wei, Tashun, and Wilson, Warwick
Subjects: Astrophysics
Abstract: We describe methods used to validate data from the Y.T. Lee Array for Microwave Background Anisotropy (AMiBA), an interferometric array designed to measure the Sunyaev-Zel'dovich effect and the anisotropy of the Cosmic Microwave Background (CMB). We perform several statistical tests on data from pointed galaxy cluster observations taken in 2007 and noise data from long-term blank sky observations and measurements with the feeds covered by the absorbers. We apply power spectrum analysis, cross power spectrum analysis among different outputs with different time lags in our analog correlator, and sample variance law tests to noise data. We find that (1) there is no time variation of electronic offsets on the time scale of our two-patch observations (~10 minutes); (2) noise is correlated by less than 10% between different lags; and (3) the variance of noise scales with the inverse of time. To test the Gaussianity of the data, we apply Kolmogorov-Smirnov (K-S) tests to cluster data, and find that a 5% significance level efficiently detects data sets with known hardware problems without rejecting an excess of acceptable data. We also calculate third- and fourth-order moments and cumulants for the noise residual visibilities and find that about 95% of our data are within the 99% confidence regions of Gaussianity., Comment: 15 pages, 5 figures, accepted for publication in ApJ
Published: 2008
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23. The Yuan-Tseh Lee Array for Microwave Background Anisotropy

Author: Ho, Paul T. P., Altamirano, Pablo, Chang, Chia-Hao, Chang, Shu-Hao, Chang, Su-Wei, Chen, Chung-Cheng, Chen, Ke-Jung, Chen, Ming-Tang, Han, Chih-Chiang, Ho, West M., Huang, Yau-De, Hwang, Yuh-Jing, Ibanez-Romano, Fabiola, Jiang, Homin, Koch, Patrick M., Kubo, Derek Y., Li, Chao-Te, Lim, Jeremy, Lin, Kai-Yang, Liu, Guo-Chin, Lo, Kwok-Yung, Ma, Cheng-Jiun, Martin, Robert N., Martin-Cocher, Pierre, Molnar, Sandor M., Ng, Kin-Wang, Nishioka, Hiroaki, O'Connell, Kevin E., Oshiro, Peter, Patt, Ferdinand, Raffin, Philippe, Umetsu, Keiichi, Wei, Tashun, Wu, Jiun-Huei Proty, Chiueh, Tzi-Dar, Chiueh, Tzihong, Chu, Tah-Hsiung, Huang, Chih-Wei Locutus, Hwang, W. Y. Pauchy, Liao, Yu-Wei, Lien, Chun-Hsien, Wang, Fu-Cheng, Wang, Huei, Wei, Ray-Ming, Yang, Chia-Hsiang, Kesteven, Michael, Kingsley, Jeff, Sinclair, Malcolm M., Wilson, Warwick, Birkinshaw, Mark, Liang, Haida, Lancaster, Katy, Park, Chan-Gyung, Pen, Ue-Li, and Peterson, Jeffrey B.
Subjects: Astrophysics
Abstract: The Yuan-Tseh Lee Array for Microwave Background Anisotropy (AMiBA) is the first interferometer dedicated to studying the cosmic microwave background (CMB) radiation at 3mm wavelength. The choice of 3mm was made to minimize the contributions from foreground synchrotron radiation and Galactic dust emission. The initial configuration of seven 0.6m telescopes mounted on a 6-m hexapod platform was dedicated in October 2006 on Mauna Loa, Hawaii. Scientific operations began with the detection of a number of clusters of galaxies via the thermal Sunyaev-Zel'dovich effect. We compare our data with Subaru weak lensing data in order to study the structure of dark matter. We also compare our data with X-ray data in order to derive the Hubble constant., Comment: accepted for publication in ApJ (13 pages, 7 figures); a version with high resolution figures available at http://www.asiaa.sinica.edu.tw/~keiichi/upfiles/AMiBA7/pho_highreso.pdf
Published: 2008
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24. Mass and Hot Baryons in Massive Galaxy Clusters from Subaru Weak Lensing and AMiBA SZE Observations

Author: Umetsu, Keiichi, Birkinshaw, Mark, Liu, Guo-Chin, Wu, Jiun-Huei Proty, Medezinski, Elinor, Broadhurst, Tom, Lemze, Doron, Zitrin, Adi, Ho, Paul T. P., Huang, Chih-Wei Locutus, Koch, Patrick M., Liao, Yu-Wei, Lin, Kai-Yang, Molnar, Sandor M., Nishioka, Hiroaki, Wang, Fu-Cheng, Altamirano, Pablo, Chang, Chia-Hao, Chang, Shu-Hao, Chang, Su-Wei, Chen, Ming-Tang, Han, Chih-Chiang, Huang, Yau-De, Hwang, Yuh-Jing, Jiang, Homin, Kesteven, Michael, Kubo, Derek Y., Li, Chao-Te, Martin-Cocher, Pierre, Oshiro, Peter, Raffin, Philippe, Wei, Tashun, and Wilson, Warwick
Subjects: Astrophysics
Abstract: We present a multiwavelength analysis of a sample of four hot (T_X>8keV) X-ray galaxy clusters (A1689, A2261, A2142, and A2390) using joint AMiBA Sunyaev-Zel'dovich effect (SZE) and Subaru weak lensing observations, combined with published X-ray temperatures, to examine the distribution of mass and the intracluster medium (ICM) in massive cluster environments. Our observations show that A2261 is very similar to A1689 in terms of lensing properties. Many tangential arcs are visible around A2261, with an effective Einstein radius \sim 40 arcsec (at z \sim 1.5), which when combined with our weak lensing measurements implies a mass profile well fitted by an NFW model with a high concentration c_{vir} \sim 10, similar to A1689 and to other massive clusters. The cluster A2142 shows complex mass substructure, and displays a shallower profile (c_{vir} \sim 5), consistent with detailed X-ray observations which imply recent interaction. The AMiBA map of A2142 exhibits an SZE feature associated with mass substructure lying ahead of the sharp north-west edge of the X-ray core suggesting a pressure increase in the ICM. For A2390 we obtain highly elliptical mass and ICM distributions at all radii, consistent with other X-ray and strong lensing work. Our cluster gas fraction measurements, free from the hydrostatic equilibrium assumption, are overall in good agreement with published X-ray and SZE observations, with the sample-averaged gas fraction of = 0.133 \pm 0.027, for our sample = (1.2 \pm 0.1) \times 10^{15} M_{sun} h^{-1}. When compared to the cosmic baryon fraction f_b = \Omega_b/\Omega_m constrained by the WMAP 5-year data, this indicates /f_b = 0.78 \pm 0.16, i.e., (22 \pm 16)% of the baryons are missing from the hot phase of clusters., Comment: accepted for publication in ApJ; high resolution figures available at http://www.asiaa.sinica.edu.tw/~keiichi/upfiles/AMiBA7/ms_highreso.pdf
Published: 2008
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25. A ring-like accretion structure in M87 connecting its black hole and jet

Author: Lu, Ru-Sen, primary, Asada, Keiichi, additional, Krichbaum, Thomas P., additional, Park, Jongho, additional, Tazaki, Fumie, additional, Pu, Hung-Yi, additional, Nakamura, Masanori, additional, Lobanov, Andrei, additional, Hada, Kazuhiro, additional, Akiyama, Kazunori, additional, Kim, Jae-Young, additional, Marti-Vidal, Ivan, additional, Gómez, José L., additional, Kawashima, Tomohisa, additional, Yuan, Feng, additional, Ros, Eduardo, additional, Alef, Walter, additional, Britzen, Silke, additional, Bremer, Michael, additional, Broderick, Avery E., additional, Doi, Akihiro, additional, Giovannini, Gabriele, additional, Giroletti, Marcello, additional, Ho, Paul T. P., additional, Honma, Mareki, additional, Hughes, David H., additional, Inoue, Makoto, additional, Jiang, Wu, additional, Kino, Motoki, additional, Koyama, Shoko, additional, Lindqvist, Michael, additional, Liu, Jun, additional, Marscher, Alan P., additional, Matsushita, Satoki, additional, Nagai, Hiroshi, additional, Rottmann, Helge, additional, Savolainen, Tuomas, additional, Schuster, Karl-Friedrich, additional, Shen, Zhi-Qiang, additional, de Vicente, Pablo, additional, Walker, R. Craig, additional, Yang, Hai, additional, Zensus, J. Anton, additional, Algaba, Juan Carlos, additional, Allardi, Alexander, additional, Bach, Uwe, additional, Berthold, Ryan, additional, Bintley, Dan, additional, Byun, Do-Young, additional, Casadio, Carolina, additional, Chang, Shu-Hao, additional, Chang, Chih-Cheng, additional, Chang, Song-Chu, additional, Chen, Chung-Chen, additional, Chen, Ming-Tang, additional, Chilson, Ryan, additional, Chuter, Tim C., additional, Conway, John, additional, Crew, Geoffrey B., additional, Dempsey, Jessica T., additional, Dornbusch, Sven, additional, Faber, Aaron, additional, Friberg, Per, additional, García, Javier González, additional, Garrido, Miguel Gómez, additional, Han, Chih-Chiang, additional, Han, Kuo-Chang, additional, Hasegawa, Yutaka, additional, Herrero-Illana, Ruben, additional, Huang, Yau-De, additional, Huang, Chih-Wei L., additional, Impellizzeri, Violette, additional, Jiang, Homin, additional, Jinchi, Hao, additional, Jung, Taehyun, additional, Kallunki, Juha, additional, Kirves, Petri, additional, Kimura, Kimihiro, additional, Koay, Jun Yi, additional, Koch, Patrick M., additional, Kramer, Carsten, additional, Kraus, Alex, additional, Kubo, Derek, additional, Kuo, Cheng-Yu, additional, Li, Chao-Te, additional, Lin, Lupin Chun-Che, additional, Liu, Ching-Tang, additional, Liu, Kuan-Yu, additional, Lo, Wen-Ping, additional, Lu, Li-Ming, additional, MacDonald, Nicholas, additional, Martin-Cocher, Pierre, additional, Messias, Hugo, additional, Meyer-Zhao, Zheng, additional, Minter, Anthony, additional, Nair, Dhanya G., additional, Nishioka, Hiroaki, additional, Norton, Timothy J., additional, Nystrom, George, additional, Ogawa, Hideo, additional, Oshiro, Peter, additional, Patel, Nimesh A., additional, Pen, Ue-Li, additional, Pidopryhora, Yurii, additional, Pradel, Nicolas, additional, Raffin, Philippe A., additional, Rao, Ramprasad, additional, Ruiz, Ignacio, additional, Sanchez, Salvador, additional, Shaw, Paul, additional, Snow, William, additional, Sridharan, T. K., additional, Srinivasan, Ranjani, additional, Tercero, Belén, additional, Torne, Pablo, additional, Traianou, Efthalia, additional, Wagner, Jan, additional, Walther, Craig, additional, Wei, Ta-Shun, additional, Yang, Jun, additional, and Yu, Chen-Yu, additional
Published: 2023
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26. ALMA band-1 receiver: first light, performance, and road to completion

Author: Huang, Yau De, primary, Hwang, Yuh-Jing, additional, Chiong, Chau-Ching, additional, Yen, Hsi-Wei, additional, Koch, Patrick M., additional, Huang, Chi-Den, additional, Liu, Bill, additional, Chen, Cheng Lin, additional, Tsai, Jwu Jiunn, additional, Hsiung, Wei-Ling, additional, Chi, Li-Pin, additional, Ho, Chin-Ting, additional, Wang, Chao-Chin, additional, Chien, Chen, additional, Chu, You-Hua, additional, Ho, Paul, additional, Kemper, Francisca, additional, Gonzalez, Alvaro, additional, Iguchi, Satoru, additional, Uzawa, Yoshi, additional, Iono, Daisuke, additional, Nagai, Hiroshi, additional, Effland, John, additional, Saini, Kamaljeet, additional, Pospieszalski, Marian, additional, Henke, Doug, additional, Yeung, Keith K., additional, Finger, Ricardo, additional, Tapia, Valeria, additional, Reyes, Nicolas, additional, Siringo, Giorgio, additional, Marconi, Gianni, additional, and Cabezas, Rodrigo, additional
Published: 2022
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27. BURSTT: Bustling Universe Radio Survey Telescope in Taiwan

Author: Lin, Hsiu-Hsien, primary, Lin, Kai-yang, additional, Li, Chao-Te, additional, Tseng, Yao-Huan, additional, Jiang, Homin, additional, Wang, Jen-Hung, additional, Cheng, Jen-Chieh, additional, Pen, Ue-Li, additional, Chen, Ming-Tang, additional, Chen, Pisin, additional, Chen, Yaocheng, additional, Goto, Tomotsugu, additional, Hashimoto, Tetsuya, additional, Hwang, Yuh-Jing, additional, King, Sun-Kun, additional, Kubo, Derek, additional, Kuo, Chung-Yun, additional, Mills, Adam, additional, Nam, Jiwoo, additional, Oshiro, Peter, additional, Shen, Chang-Shao, additional, Tseng, Hsien-Chun, additional, Wang, Shih-Hao, additional, Wu, Vigo Feng-Shun, additional, Bower, Geoffrey, additional, Chang, Shu-Hao, additional, Chen, Pai-An, additional, Chen, Ying-Chih, additional, Chiang, Yi-Kuan, additional, Fedynitch, Anatoli, additional, Gusinskaia, Nina, additional, Ho, Simon C.-C., additional, Hsiao, Tiger Y.-Y., additional, Hu, Chin-Ping, additional, Huang, Yau De, additional, Jáuregui García, José Miguel, additional, Kim, Seong Jin, additional, Kuo, Cheng-Yu, additional, Ling, Decmend Fang-Jie, additional, On, Alvina Y. L., additional, Peterson, Jeffrey B., additional, R. Raquel, Bjorn Jasper, additional, Su, Shih-Chieh, additional, Uno, Yuri, additional, Wu, Cossas K.-W., additional, Yamasaki, Shotaro, additional, and Zhu, Hong-Ming, additional
Published: 2022
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28. The repair work and future plan for the Auto-Correlation Spectral Imaging System (ACSIS) at the James Clerk Maxwell Telescope (JCMT)

Author: Liu, Kuan-Yu, primary, Bintley, Daniel, additional, Berthold, Ryan, additional, Bell, Graham S., additional, Wang, Ming-Jye, additional, Chen, Ming-Tang, additional, Huang, Yau De, additional, Han, Chih-Chiang, additional, Chiong, Chau-Ching, additional, Li, Chao-Te, additional, Jiang, Homin, additional, Kubo, Derek, additional, Fuller, Gary A., additional, Zhong, Weiye, additional, Liu, Junhao, additional, Parsons, Harriet, additional, Dempsey, Jessica, additional, Friberg, Per, additional, Purves, Maren, additional, Graves, Sarah F., additional, Cookson, Jamie L., additional, Sison, Ed, additional, Jiang, Xue-Jian, additional, Mizuno, Izumi, additional, Li, Shaoliang, additional, Stahm, William G., additional, Walther, Craig A., additional, Yu, Wei, additional, and Duan, Ran, additional
Published: 2022
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29. Extended Q-band (eQ) receiver for Nobeyama 45-m Telescope

Author: Chiong, Chau-Ching, primary, Nakamura, Fumitaka, additional, Nishimura, Atsushi, additional, Burns, Ross A., additional, Chien, Chen, additional, Dobashi, Kazuhito, additional, Fujii, Yasunori, additional, Ho, Chin-Ting, additional, Huang, Yau De, additional, Hwang, Yuh-Jing, additional, Jian, Shou-Ting, additional, Kawabe, Ryohei, additional, Kimura, Kimihiro, additional, Liu, Sheng-Yuan, additional, Lai, Shih-Ping, additional, Ogawa, Hideo, additional, Okada, Nozomi, additional, Kameno, Seiji, additional, Shimoikura, Tomomi, additional, Takakuwa, Shigehisa, additional, Taniguchi, Kotomi, additional, Wang, Wei-Hao, additional, Yeh, You-Ting, additional, Yamasaki, Yasumasa, additional, and Yonekura, Yoshinori, additional
Published: 2022
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30. First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

Author: Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Asada, Keiichi, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Baloković, Mislav, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blackburn, Lindy, Blundell, Raymond, Bouman, Katherine L., Bower, Geoffrey C., Boyce, Hope, Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Bustamante, Sandra, Byun, Do-Young, Carlstrom, John E., Ceccobello, Chiara, Chael, Andrew, Chan, Chi-kwan, Chatterjee, Koushik, Chatterjee, Shami, Chen, Ming-Tang, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Cordes, James M., Crawford, Thomas M., Crew, Geoffrey B., Cruz-Osorio, Alejandro, Cui, Yuzhu, Davelaar, Jordy, Laurentis, Mariafelicia De, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Doeleman, Sheperd S., Dougal, Sean, Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fish, Vincent L., Fomalont, Ed, Ford, H. Alyson, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., García, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Haworth, Kari, Hecht, Michael H., Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Joshi, Abhishek V., Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Koay, Jun Yi, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Michael, Krichbaum, Thomas P., Kuo, Cheng-Yu, Bella, Noemi La, Lauer, Tod R., Lee, Daeyoung, Lee, Sang-Sung, Leung, Po Kin, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lu, Ru-Sen, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Michalik, Daniel, Mizuno, Izumi, Mizuno, Yosuke, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Müller, Cornelia, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nadolski, Andrew, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares, Héctor, Ortiz-León, Gisela N., Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Piétu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Pötzl, Felix M., Prather, Ben, Preciado-López, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Romero-Cañizales, Cristina, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez, Salvador, Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Souccar, Kamal, Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Wagner, Jan, Ward-Thompson, Derek, Wardle, John, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wielgus, Maciek, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yamaguchi, Paul, Yoon, Doosoo, Young, André, Young, Ken, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, Zhao, Shan-Shan, Agurto, Claudio, Allardi, Alexander, Amestica, Rodrigo, Araneda, Juan Pablo, Arriagada, Oriel, Berghuis, Jennie L., Bertarini, Alessandra, Berthold, Ryan, Blanchard, Jay, Brown, Ken, Cárdenas, Mauricio, Cantzler, Michael, Caro, Patricio, Castillo-Domínguez, Edgar, Chan, Tin Lok, Chang, Chih-Cheng, Chang, Dominic O., Chang, Shu-Hao, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Chuter, Tim C., Ciechanowicz, Miroslaw, Colin-Beltran, Edgar, Coulson, Iain M., Crowley, Joseph, Degenaar, Nathalie, Dornbusch, Sven, Durán, Carlos A., Everett, Wendeline B., Faber, Aaron, Forster, Karl, Fuchs, Miriam M., Gale, David M., Geertsema, Gertie, González, Edouard, Graham, Dave, Gueth, Frédéric, Halverson, Nils W., Han, Chih-Chiang, Han, Kuo-Chang, Hasegawa, Yutaka, Hernández-Rebollar, José Luis, Herrera, Cristian, Herrero-Illana, Ruben, Heyminck, Stefan, Hirota, Akihiko, Hoge, James, Hostler Schimpf, Shelbi R., Howie, Ryan E., Huang, Yau-De, Jiang, Homin, Jinchi, Hao, John, David, Kimura, Kimihiro, Klein, Thomas, Kubo, Derek, Kuroda, John, Kwon, Caleb, Lacasse, Richard, Laing, Robert, Leitch, Erik M., Li, Chao-Te, Liu, Ching-Tang, Liu, Kuan-Yu, Lin, Lupin C.-C., Lu, Li-Ming, Mac-Auliffe, Felipe, Martin-Cocher, Pierre, Matulonis, Callie, Maute, John K., Messias, Hugo, Meyer-Zhao, Zheng, Montaña, Alfredo, Montenegro-Montes, Francisco, Montgomerie, William, Moreno Nolasco, Marcos Emir, Muders, Dirk, Nishioka, Hiroaki, Norton, Timothy J., Nystrom, George, Ogawa, Hideo, Olivares, Rodrigo, Oshiro, Peter, Pérez-Beaupuits, Juan Pablo, Parra, Rodrigo, Phillips, Neil M., Poirier, Michael, Pradel, Nicolas, Qiu, Richard, Raffin, Philippe A., Rahlin, Alexandra S., Ramírez, Jorge, Ressler, Sean, Reynolds, Mark, Rodríguez-Montoya, Iván, Saez-Madain, Alejandro F., Santana, Jorge, Shaw, Paul, Shirkey, Leslie E., Silva, Kevin M., Snow, William, Sousa, Don, Sridharan, T. K., Stahm, William, Stark, Anthony A., Test, John, Torstensson, Karl, Venegas, Paulina, Walther, Craig, Wei, Ta-Shun, White, Chris, Wieching, Gundolf, Wijnands, Rudy, Wouterloot, Jan G. A., Yu, Chen-Yu, Zeballos, Milagros, Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Asada, Keiichi, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Baloković, Mislav, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blackburn, Lindy, Blundell, Raymond, Bouman, Katherine L., Bower, Geoffrey C., Boyce, Hope, Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Bustamante, Sandra, Byun, Do-Young, Carlstrom, John E., Ceccobello, Chiara, Chael, Andrew, Chan, Chi-kwan, Chatterjee, Koushik, Chatterjee, Shami, Chen, Ming-Tang, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Cordes, James M., Crawford, Thomas M., Crew, Geoffrey B., Cruz-Osorio, Alejandro, Cui, Yuzhu, Davelaar, Jordy, Laurentis, Mariafelicia De, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Doeleman, Sheperd S., Dougal, Sean, Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fish, Vincent L., Fomalont, Ed, Ford, H. Alyson, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., García, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Haworth, Kari, Hecht, Michael H., Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Joshi, Abhishek V., Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Koay, Jun Yi, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Michael, Krichbaum, Thomas P., Kuo, Cheng-Yu, Bella, Noemi La, Lauer, Tod R., Lee, Daeyoung, Lee, Sang-Sung, Leung, Po Kin, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lu, Ru-Sen, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Michalik, Daniel, Mizuno, Izumi, Mizuno, Yosuke, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Müller, Cornelia, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nadolski, Andrew, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares, Héctor, Ortiz-León, Gisela N., Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Piétu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Pötzl, Felix M., Prather, Ben, Preciado-López, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Romero-Cañizales, Cristina, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez, Salvador, Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Souccar, Kamal, Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Wagner, Jan, Ward-Thompson, Derek, Wardle, John, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wielgus, Maciek, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yamaguchi, Paul, Yoon, Doosoo, Young, André, Young, Ken, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, Zhao, Shan-Shan, Agurto, Claudio, Allardi, Alexander, Amestica, Rodrigo, Araneda, Juan Pablo, Arriagada, Oriel, Berghuis, Jennie L., Bertarini, Alessandra, Berthold, Ryan, Blanchard, Jay, Brown, Ken, Cárdenas, Mauricio, Cantzler, Michael, Caro, Patricio, Castillo-Domínguez, Edgar, Chan, Tin Lok, Chang, Chih-Cheng, Chang, Dominic O., Chang, Shu-Hao, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Chuter, Tim C., Ciechanowicz, Miroslaw, Colin-Beltran, Edgar, Coulson, Iain M., Crowley, Joseph, Degenaar, Nathalie, Dornbusch, Sven, Durán, Carlos A., Everett, Wendeline B., Faber, Aaron, Forster, Karl, Fuchs, Miriam M., Gale, David M., Geertsema, Gertie, González, Edouard, Graham, Dave, Gueth, Frédéric, Halverson, Nils W., Han, Chih-Chiang, Han, Kuo-Chang, Hasegawa, Yutaka, Hernández-Rebollar, José Luis, Herrera, Cristian, Herrero-Illana, Ruben, Heyminck, Stefan, Hirota, Akihiko, Hoge, James, Hostler Schimpf, Shelbi R., Howie, Ryan E., Huang, Yau-De, Jiang, Homin, Jinchi, Hao, John, David, Kimura, Kimihiro, Klein, Thomas, Kubo, Derek, Kuroda, John, Kwon, Caleb, Lacasse, Richard, Laing, Robert, Leitch, Erik M., Li, Chao-Te, Liu, Ching-Tang, Liu, Kuan-Yu, Lin, Lupin C.-C., Lu, Li-Ming, Mac-Auliffe, Felipe, Martin-Cocher, Pierre, Matulonis, Callie, Maute, John K., Messias, Hugo, Meyer-Zhao, Zheng, Montaña, Alfredo, Montenegro-Montes, Francisco, Montgomerie, William, Moreno Nolasco, Marcos Emir, Muders, Dirk, Nishioka, Hiroaki, Norton, Timothy J., Nystrom, George, Ogawa, Hideo, Olivares, Rodrigo, Oshiro, Peter, Pérez-Beaupuits, Juan Pablo, Parra, Rodrigo, Phillips, Neil M., Poirier, Michael, Pradel, Nicolas, Qiu, Richard, Raffin, Philippe A., Rahlin, Alexandra S., Ramírez, Jorge, Ressler, Sean, Reynolds, Mark, Rodríguez-Montoya, Iván, Saez-Madain, Alejandro F., Santana, Jorge, Shaw, Paul, Shirkey, Leslie E., Silva, Kevin M., Snow, William, Sousa, Don, Sridharan, T. K., Stahm, William, Stark, Anthony A., Test, John, Torstensson, Karl, Venegas, Paulina, Walther, Craig, Wei, Ta-Shun, White, Chris, Wieching, Gundolf, Wijnands, Rudy, Wouterloot, Jan G. A., Yu, Chen-Yu, and Zeballos, Milagros
Published: 2022

31. First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multiwavelength Observations, Data Processing, and Calibration

Author: Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Asada, Keiichi, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Baloković, Mislav, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blackburn, Lindy, Blundell, Raymond, Bouman, Katherine L., Bower, Geoffrey C., Boyce, Hope, Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Bustamante, Sandra, Byun, Do-Young, Carlstrom, John E., Ceccobello, Chiara, Chael, Andrew, Chan, Chi-kwan, Chatterjee, Koushik, Chatterjee, Shami, Chen, Ming-Tang, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Cordes, James M., Crawford, Thomas M., Crew, Geoffrey B., Cruz-Osorio, Alejandro, Cui, Yuzhu, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Doeleman, Sheperd S., Dougal, Sean, Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fish, Vincent L., Fomalont, Ed, Ford, H. Alyson, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., García, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Haworth, Kari, Hecht, Michael H., Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Joshi, Abhishek V., Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Koay, Jun Yi, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Michael, Krichbaum, Thomas P., Kuo, Cheng-Yu, Bella, Noemi La, Lauer, Tod R., Lee, Daeyoung, Lee, Sang-Sung, Leung, Po Kin, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lu, Ru-Sen, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Michalik, Daniel, Mizuno, Izumi, Mizuno, Yosuke, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Müller, Cornelia, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nadolski, Andrew, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares, Héctor, Ortiz-León, Gisela N., Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Piétu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Pötzl, Felix M., Prather, Ben, Preciado-López, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Romero-Cañizales, Cristina, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez, Salvador, Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Souccar, Kamal, Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Wagner, Jan, Ward-Thompson, Derek, Wardle, John, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wielgus, Maciek, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yamaguchi, Paul, Yoon, Doosoo, Young, André, Young, Ken, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, Zhao, Shan-Shan, Agurto, Claudio, Araneda, Juan Pablo, Arriagada, Oriel, Bertarini, Alessandra, Berthold, Ryan, Blanchard, Jay, Brown, Ken, Cárdenas, Mauricio, Cantzler, Michael, Caro, Patricio, Chuter, Tim C., Ciechanowicz, Miroslaw, Coulson, Iain M., Crowley, Joseph, Degenaar, Nathalie, Dornbusch, Sven, Durán, Carlos A., Forster, Karl, Geertsema, Gertie, González, Edouard, Graham, Dave, Gueth, Frédéric, Han, Chih-Chiang, Herrera, Cristian, Herrero-Illana, Ruben, Heyminck, Stefan, Hoge, James, Huang, Yau-De, Jiang, Homin, John, David, Klein, Thomas, Kubo, Derek, Kuroda, John, Kwon, Caleb, Laing, Robert, Liu, Ching-Tang, Liu, Kuan-Yu, Mac-Auliffe, Felipe, Martin-Cocher, Pierre, Matulonis, Callie, Messias, Hugo, Meyer-Zhao, Zheng, Montenegro-Montes, Francisco, Montgomerie, William, Muders, Dirk, Nishioka, Hiroaki, Norton, Timothy J., Olivares, Rodrigo, Pérez-Beaupuits, Juan Pablo, Parra, Rodrigo, Poirier, Michael, Pradel, Nicolas, Raffin, Philippe A., Ramírez, Jorge, Reynolds, Mark, Saez-Madain, Alejandro F., Santana, Jorge, Silva, Kevin M., Sousa, Don, Stahm, William, Torstensson, Karl, Venegas, Paulina, Walther, Craig, Wieching, Gundolf, Wijnands, Rudy, Wouterloot, Jan G. A., Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Algaba, Juan Carlos, Anantua, Richard, Asada, Keiichi, Azulay, Rebecca, Bach, Uwe, Baczko, Anne-Kathrin, Ball, David, Baloković, Mislav, Barrett, John, Bauböck, Michi, Benson, Bradford A., Bintley, Dan, Blackburn, Lindy, Blundell, Raymond, Bouman, Katherine L., Bower, Geoffrey C., Boyce, Hope, Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Bustamante, Sandra, Byun, Do-Young, Carlstrom, John E., Ceccobello, Chiara, Chael, Andrew, Chan, Chi-kwan, Chatterjee, Koushik, Chatterjee, Shami, Chen, Ming-Tang, Chen, Yongjun, Cheng, Xiaopeng, Cho, Ilje, Christian, Pierre, Conroy, Nicholas S., Conway, John E., Cordes, James M., Crawford, Thomas M., Crew, Geoffrey B., Cruz-Osorio, Alejandro, Cui, Yuzhu, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Dhruv, Vedant, Doeleman, Sheperd S., Dougal, Sean, Dzib, Sergio A., Eatough, Ralph P., Emami, Razieh, Falcke, Heino, Farah, Joseph, Fish, Vincent L., Fomalont, Ed, Ford, H. Alyson, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Fuentes, Antonio, Galison, Peter, Gammie, Charles F., García, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gómez-Ruiz, Arturo I., Gómez, José L., Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Haggard, Daryl, Haworth, Kari, Hecht, Michael H., Hesper, Ronald, Heumann, Dirk, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Impellizzeri, C. M. Violette, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Jiménez-Rosales, Alejandra, Johnson, Michael D., Jorstad, Svetlana, Joshi, Abhishek V., Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Dong-Jin, Kim, Jae-Young, Kim, Jongsoo, Kim, Junhan, Kino, Motoki, Koay, Jun Yi, Kocherlakota, Prashant, Kofuji, Yutaro, Koch, Patrick M., Koyama, Shoko, Kramer, Carsten, Kramer, Michael, Krichbaum, Thomas P., Kuo, Cheng-Yu, Bella, Noemi La, Lauer, Tod R., Lee, Daeyoung, Lee, Sang-Sung, Leung, Po Kin, Levis, Aviad, Li, Zhiyuan, Lico, Rocco, Lindahl, Greg, Lindqvist, Michael, Lisakov, Mikhail, Liu, Jun, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin J., Lu, Ru-Sen, Mao, Jirong, Marchili, Nicola, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Martí-Vidal, Iván, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Michalik, Daniel, Mizuno, Izumi, Mizuno, Yosuke, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Müller, Cornelia, Mus, Alejandro, Musoke, Gibwa, Myserlis, Ioannis, Nadolski, Andrew, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Nathanail, Antonios, Fuentes, Santiago Navarro, Neilsen, Joey, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Nowak, Michael A., Oh, Junghwan, Okino, Hiroki, Olivares, Héctor, Ortiz-León, Gisela N., Oyama, Tomoaki, Özel, Feryal, Palumbo, Daniel C. M., Paraschos, Georgios Filippos, Park, Jongho, Parsons, Harriet, Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Piétu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Pötzl, Felix M., Prather, Ben, Preciado-López, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ricarte, Angelo, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Romero-Cañizales, Cristina, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruiz, Ignacio, Ruszczyk, Chet, Rygl, Kazi L. J., Sánchez, Salvador, Sánchez-Argüelles, David, Sánchez-Portal, Miguel, Sasada, Mahito, Satapathy, Kaushik, Savolainen, Tuomas, Schloerb, F. Peter, Schonfeld, Jonathan, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Souccar, Kamal, Sun, He, Tazaki, Fumie, Tetarenko, Alexandra J., Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Torne, Pablo, Traianou, Efthalia, Trent, Tyler, Trippe, Sascha, Turk, Matthew, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Vos, Jesse, Wagner, Jan, Ward-Thompson, Derek, Wardle, John, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wielgus, Maciek, Wiik, Kaj, Witzel, Gunther, Wondrak, Michael F., Wong, George N., Wu, Qingwen, Yamaguchi, Paul, Yoon, Doosoo, Young, André, Young, Ken, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhang, Shuo, Zhao, Guang-Yao, Zhao, Shan-Shan, Agurto, Claudio, Araneda, Juan Pablo, Arriagada, Oriel, Bertarini, Alessandra, Berthold, Ryan, Blanchard, Jay, Brown, Ken, Cárdenas, Mauricio, Cantzler, Michael, Caro, Patricio, Chuter, Tim C., Ciechanowicz, Miroslaw, Coulson, Iain M., Crowley, Joseph, Degenaar, Nathalie, Dornbusch, Sven, Durán, Carlos A., Forster, Karl, Geertsema, Gertie, González, Edouard, Graham, Dave, Gueth, Frédéric, Han, Chih-Chiang, Herrera, Cristian, Herrero-Illana, Ruben, Heyminck, Stefan, Hoge, James, Huang, Yau-De, Jiang, Homin, John, David, Klein, Thomas, Kubo, Derek, Kuroda, John, Kwon, Caleb, Laing, Robert, Liu, Ching-Tang, Liu, Kuan-Yu, Mac-Auliffe, Felipe, Martin-Cocher, Pierre, Matulonis, Callie, Messias, Hugo, Meyer-Zhao, Zheng, Montenegro-Montes, Francisco, Montgomerie, William, Muders, Dirk, Nishioka, Hiroaki, Norton, Timothy J., Olivares, Rodrigo, Pérez-Beaupuits, Juan Pablo, Parra, Rodrigo, Poirier, Michael, Pradel, Nicolas, Raffin, Philippe A., Ramírez, Jorge, Reynolds, Mark, Saez-Madain, Alejandro F., Santana, Jorge, Silva, Kevin M., Sousa, Don, Stahm, William, Torstensson, Karl, Venegas, Paulina, Walther, Craig, Wieching, Gundolf, Wijnands, Rudy, and Wouterloot, Jan G. A.
Published: 2022

32. ALMA Band-1 (35-50GHz) receiver: first light, performance, and road to completion

Author: Agencia Nacional de Investigación y Desarrollo (Chile), Fondo Nacional de Desarrollo Científico y Tecnológico (Chile), Huang, Yau-De, Kemper, Francisca, Morata, Óscar, Cabezas, Rodrigo, Agencia Nacional de Investigación y Desarrollo (Chile), Fondo Nacional de Desarrollo Científico y Tecnológico (Chile), Huang, Yau-De, Kemper, Francisca, Morata, Óscar, and Cabezas, Rodrigo
Abstract: The Atacama large millimeter/submillimeter array (ALMA) band-1 receiver covers the frequency band between 35-50 GHz. An extension of up to 52 GHz is on a best-effort basis. Covering the longest wavelengths visible with ALMA, this receiver is enabling studies of dust grain evolution in proto-planetary systems probing dust grain sizes close to 1 cm, and with multiple red-shifted molecular lines it will open up a new window in the high-redshift universe. The band-1 project has recently achieved first light and with this passed a major project milestone. We present the challenges, from initial development to prototype, to establishing the infrastructure, integration, and evaluation of 73 production receiver units, and to the final tasks to complete the project. We conclude with the initial performance and characterization of the first band-1 receivers installed on ALMA.
Published: 2022

33. ALMA Band-1 (35-50GHz) receiver: first light, performance, and road to completion

Author: Huang, Yau-De, Kemper, Francisca, Morata, Óscar, Cabezas, Rodrigo, Agencia Nacional de Investigación y Desarrollo (Chile), and Fondo Nacional de Desarrollo Científico y Tecnológico (Chile)
Subjects: ALMA, Band 1, Receiver
Abstract: Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada.-- et al., The Atacama large millimeter/submillimeter array (ALMA) band-1 receiver covers the frequency band between 35-50 GHz. An extension of up to 52 GHz is on a best-effort basis. Covering the longest wavelengths visible with ALMA, this receiver is enabling studies of dust grain evolution in proto-planetary systems probing dust grain sizes close to 1 cm, and with multiple red-shifted molecular lines it will open up a new window in the high-redshift universe. The band-1 project has recently achieved first light and with this passed a major project milestone. We present the challenges, from initial development to prototype, to establishing the infrastructure, integration, and evaluation of 73 production receiver units, and to the final tasks to complete the project. We conclude with the initial performance and characterization of the first band-1 receivers installed on ALMA., Universidad de Chile acknowledges the support of ANID under grants Basal ACE210002, FB210003 and FONDECYT 1221662.
Published: 2022

34. Control and monitoring software for the Greenland Telescope

Author: Huang, Chih-Wei Locutus, primary, Matsushita, Satoki, additional, Patel, Nimesh A., additional, Srinivasan, Ranjani, additional, Asada, Keiichi, additional, Bower, Geoffrey, additional, Chang, Shu-Hao, additional, Chen, Chung-Cheng, additional, Chen, Ming-Tang, additional, Chilson, Ryan, additional, Han, Chih-Chiang, additional, Ho, Paul T., additional, Huang, Yau-De, additional, Inoue, Makoto, additional, Jiang, Homin, additional, Koay, Jun Yi, additional, Koch, Patrick M., additional, Koyama, Shoko, additional, Kubo, Derek Y., additional, Kuo, Cheng-Yu, additional, Li, Chao-Te, additional, Liu, Ching-Tang, additional, Liu, Kuan-Yu, additional, Lo, Wen-Ping, additional, Martin-Cocher, Pierre, additional, Nakamura, Masanori, additional, Norton, Timothy J., additional, Nystrom, George, additional, Oshiro, Peter, additional, Park, Jongho, additional, Pu, Hung-Yi, additional, Raffin, Philippe, additional, Rao, Ramprasad, additional, Romero-Cañizales, Cristina, additional, Shaw, Paul, additional, Sridharan, Tirupati K., additional, Wei, Ta-Shun, additional, and Yu, Chen-Yu, additional
Published: 2020
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35. Status of scientific commissioning of the Greenland Telescope

Author: Koay, Jun Yi, primary, Matsushita, Satoki, additional, Asada, Keiichi, additional, Patel, Nimesh, additional, Huang, Chih-Wei L., additional, Bower, Geoff, additional, Chang, Shu-Hao, additional, Chen, Ming-Tang, additional, Chen, Chung-Cheng, additional, Chilson, Ryan, additional, Han, Chih-Chiang, additional, Ho, Paul T. P., additional, Huang, Yau-De, additional, Inoue, Makoto, additional, Jiang, Homin, additional, Koch, Patrick M., additional, Koyama, Shoko, additional, Kuo, Cheng-Yu, additional, Kubo, Derek Y., additional, Li, Chao-Te, additional, Liu, Ching-Tang, additional, Liu, Kuan-Yu, additional, Lo, Wen-Ping, additional, Martin-Cocher, Pierre L., additional, Nakamura, Masanori, additional, Norton, Timothy, additional, Nystrom, George, additional, Oshiro, Peter, additional, Park, Jongho, additional, Pu, Hung-Yi, additional, Raffin, Philippe, additional, Rao, Ramprasad, additional, Romero-Canizales, Cristina, additional, Shaw, Paul, additional, Sridharan, Tirupati, additional, Srinivasan, Ranjani, additional, Wei, Ta-Shun S., additional, and Yu, Chen-Yu, additional
Published: 2020
Full Text: View/download PDF

36. The ALMA Band 1 receiver

Author: Huang, Yau De
Abstract: The Band 1 project is ALMA EA contribution led by ASIAA. We are presenting an overview and latest status of ALMA Band 1 project. A performance summary for the first 20 units of Band 1 production receiver is showing in this presentation. We also list up the effort has been done to minimize the project schedule delay impact. The corresponding risk responses are in place to address the problems causing the delay. The latest project milestones is also listed in this presentation.
Published: 2019
Full Text: View/download PDF

37. Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution

Author: Kim, Jae-Young, Krichbaum, Thomas P., Broderick, Avery E., Wielgus, Maciek, Blackburn, Lindy, Gomez, Jose L., Johnson, Michael D., Bouman, Katherine L., Chael, Andrew, Akiyama, Kazunori, Jorstad, Svetlana, Marscher, Alan P., Issaoun, Sara, Janssen, Michael, Chan, Chi-kwan, Savolainen, Tuomas, Pesce, Dominic W., Ozel, Feryal, Alberdi, Antxon, Alef, Walter, Asada, Keiichi, Azulay, Rebecca, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Barrett, John, Bintley, Dan, Boland, Wilfred, Bower, Geoffrey C., Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broguiere, Dominique, Bronzwaer, Thomas, Byun, Do-Young, Carlstrom, John E., Chatterjee, Shami, Chatterjee, Koushik, Chen, Ming-Tang, Chen, Yongjun, Cho, Ilje, Christian, Pierre, Conway, John E., Cordes, James M., Crew, Geoffrey B., Cui, Yuzhu, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Doeleman, Sheperd S., Eatough, Ralph P., Falcke, Heino, Fish, Vincent L., Fomalont, Ed, Fraga-Encinas, Raquel, Friberg, Per, Fromm, Christian M., Galison, Peter, Gammie, Charles F., Garcia, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Hecht, Michael H., Hesper, Ronald, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Inoue, Makoto, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jimenez-Rosales, Alejandra, Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Junhan, Kim, Jongsoo, Kino, Motoki, Koay, Jun Yi, Koch, Patrick M., Koyama, Shoko, Kramer, Michael, Kramer, Carsten, Kuo, Cheng-Yu, Lauer, Tod R., Lee, Sang-Sung, Li, Yan-Rong, Li, Zhiyuan, Lindqvist, Michael, Lico, Rocco, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin, Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Markoff, Sera, Marrone, Daniel P., Marti-Vidal, Ivan, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Yosuke, Mizuno, Izumi, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mueller, Cornelia, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Okino, Hiroki, Olivares, Hector, Ortiz-Leon, Gisela N., Oyama, Tomoaki, Palumbo, Daniel C. M., Park, Jongho, Patel, Nimesh, Pen, Ue-Li, Pietu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Preciado-Lopez, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Rose, Mel, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruszczyk, Chet, Ryan, Benjamin R., Rygl, Kazi L. J., Sanchez, Salvador, Sanchez-Arguelles, David, Sasada, Mahito, Schloerb, F. Peter, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Tazaki, Fumie, Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Trent, Tyler, Traianou, Efthalia, Trippe, Sascha, Tsuda, Shuichiro, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Wagner, Jan, Wardle, John, Ward-Thompson, Derek, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wong, George N., Wu, Qingwen, Yoon, Doosoo, Young, Andre, Young, Ken, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhao, Guangyao, Zhao, Shan-Shan, Zhu, Ziyan, Algaba, Juan-Carlos, Allardi, Alexander, Amestica, Rodrigo, Anczarski, Jadyn, Bach, Uwe, Baganoff, Frederick K., Beaudoin, Christopher, Benson, Bradford A., Berthold, Ryan, Blanchard, Jay M., Blundell, Ray, Bustamente, Sandra, Cappallo, Roger, Castillo-Dominguez, Edgar, Chang, Chih-Cheng, Chang, Shu-Hao, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Chuter, Tim C., Rosado, Rodrigo Cordova, Coulson, Iain M., Crowley, Joseph, Derome, Mark, Dexter, Matthew, Dornbusch, Sven, Dudevoir, Kevin A., Dzib, Sergio A., Eckart, Andreas, Eckert, Chris, Erickson, Neal R., Everett, Wendeline B., Faber, Aaron, Farah, Joseph R., Fath, Vernon, Folkers, Thomas W., Forbes, David C., Freund, Robert, Gomez-Ruiz, Arturo, I, Gale, David M., Gao, Feng, Geertsema, Gertie, Graham, David A., Greer, Christopher H., Grosslein, Ronald, Gueth, Frederic, Haggard, Daryl, Halverson, Nils W., Han, Chih-Chiang, Han, Kuo-Chang, Hao, Jinchi, Hasegawa, Yutaka, Henning, Jason W., Hernandez-Gomez, Antonio, Herrero-Illana, Ruben, Heyminck, Stefan, Hirota, Akihiko, Hoge, James, Huang, Yau-De, Impellizzeri, C. M. Violette, Jiang, Homin, John, David, Kamble, Atish, Keisler, Ryan, Kimura, Kimihiro, Kono, Yusuke, Kubo, Derek, Kuroda, John, Lacasse, Richard, Laing, Robert A., Leitch, Erik M., Li, Chao-Te, Lin, Lupin C-C, Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Marson, Ralph G., Martin-Cocher, Pierre L., Massingill, Kyle D., Matulonis, Callie, McColl, Martin P., McWhirter, Stephen R., Messias, Hugo, Meyer-Zhao, Zheng, Michalik, Daniel, Montana, Alfredo, Montgomerie, William, Mora-Klein, Matias, Muders, Dirk, Nadolski, Andrew, Navarro, Santiago, Neilsen, Joseph, Nguyen, Chi H., Nishioka, Hiroaki, Norton, Timothy, Nowak, Michael A., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Parsons, Harriet, Penalver, Juan, Phillips, Neil M., Poirier, Michael, Pradel, Nicolas, Primiani, Rurik A., Raffin, Philippe A., Rahlin, Alexandra S., Reiland, George, Risacher, Christopher, Ruiz, Ignacio, Saez-Madain, Alejandro F., Sassella, Remi, Schellart, Pim, Shaw, Paul, Silva, Kevin M., Shiokawa, Hotaka, Smith, David R., Snow, William, Souccar, Kamal, Sousa, Don, Sridharan, T. K., Srinivasan, Ranjani, Stahm, William, Stark, Antony A., Story, Kyle, Timmer, Sjoerd T., Vertatschitsch, Laura, Walther, Craig, Wei, Ta-Shun, Whitehorn, Nathan, Whitney, Alan R., Woody, David P., Wouterloot, Jan G. A., Wright, Melvin, Yamaguchi, Paul, Yu, Chen-Yu, Zeballos, Milagros, Zhang, Shuo, Ziurys, Lucy, Kim, Jae-Young, Krichbaum, Thomas P., Broderick, Avery E., Wielgus, Maciek, Blackburn, Lindy, Gomez, Jose L., Johnson, Michael D., Bouman, Katherine L., Chael, Andrew, Akiyama, Kazunori, Jorstad, Svetlana, Marscher, Alan P., Issaoun, Sara, Janssen, Michael, Chan, Chi-kwan, Savolainen, Tuomas, Pesce, Dominic W., Ozel, Feryal, Alberdi, Antxon, Alef, Walter, Asada, Keiichi, Azulay, Rebecca, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Barrett, John, Bintley, Dan, Boland, Wilfred, Bower, Geoffrey C., Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broguiere, Dominique, Bronzwaer, Thomas, Byun, Do-Young, Carlstrom, John E., Chatterjee, Shami, Chatterjee, Koushik, Chen, Ming-Tang, Chen, Yongjun, Cho, Ilje, Christian, Pierre, Conway, John E., Cordes, James M., Crew, Geoffrey B., Cui, Yuzhu, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Doeleman, Sheperd S., Eatough, Ralph P., Falcke, Heino, Fish, Vincent L., Fomalont, Ed, Fraga-Encinas, Raquel, Friberg, Per, Fromm, Christian M., Galison, Peter, Gammie, Charles F., Garcia, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Hecht, Michael H., Hesper, Ronald, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Inoue, Makoto, James, David J., Jannuzi, Buell T., Jeter, Britton, Jiang, Wu, Jimenez-Rosales, Alejandra, Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Junhan, Kim, Jongsoo, Kino, Motoki, Koay, Jun Yi, Koch, Patrick M., Koyama, Shoko, Kramer, Michael, Kramer, Carsten, Kuo, Cheng-Yu, Lauer, Tod R., Lee, Sang-Sung, Li, Yan-Rong, Li, Zhiyuan, Lindqvist, Michael, Lico, Rocco, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin, Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Markoff, Sera, Marrone, Daniel P., Marti-Vidal, Ivan, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Yosuke, Mizuno, Izumi, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mueller, Cornelia, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Okino, Hiroki, Olivares, Hector, Ortiz-Leon, Gisela N., Oyama, Tomoaki, Palumbo, Daniel C. M., Park, Jongho, Patel, Nimesh, Pen, Ue-Li, Pietu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Preciado-Lopez, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Rose, Mel, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruszczyk, Chet, Ryan, Benjamin R., Rygl, Kazi L. J., Sanchez, Salvador, Sanchez-Arguelles, David, Sasada, Mahito, Schloerb, F. Peter, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Tazaki, Fumie, Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Trent, Tyler, Traianou, Efthalia, Trippe, Sascha, Tsuda, Shuichiro, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Wagner, Jan, Wardle, John, Ward-Thompson, Derek, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wong, George N., Wu, Qingwen, Yoon, Doosoo, Young, Andre, Young, Ken, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhao, Guangyao, Zhao, Shan-Shan, Zhu, Ziyan, Algaba, Juan-Carlos, Allardi, Alexander, Amestica, Rodrigo, Anczarski, Jadyn, Bach, Uwe, Baganoff, Frederick K., Beaudoin, Christopher, Benson, Bradford A., Berthold, Ryan, Blanchard, Jay M., Blundell, Ray, Bustamente, Sandra, Cappallo, Roger, Castillo-Dominguez, Edgar, Chang, Chih-Cheng, Chang, Shu-Hao, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Chuter, Tim C., Rosado, Rodrigo Cordova, Coulson, Iain M., Crowley, Joseph, Derome, Mark, Dexter, Matthew, Dornbusch, Sven, Dudevoir, Kevin A., Dzib, Sergio A., Eckart, Andreas, Eckert, Chris, Erickson, Neal R., Everett, Wendeline B., Faber, Aaron, Farah, Joseph R., Fath, Vernon, Folkers, Thomas W., Forbes, David C., Freund, Robert, Gomez-Ruiz, Arturo, I, Gale, David M., Gao, Feng, Geertsema, Gertie, Graham, David A., Greer, Christopher H., Grosslein, Ronald, Gueth, Frederic, Haggard, Daryl, Halverson, Nils W., Han, Chih-Chiang, Han, Kuo-Chang, Hao, Jinchi, Hasegawa, Yutaka, Henning, Jason W., Hernandez-Gomez, Antonio, Herrero-Illana, Ruben, Heyminck, Stefan, Hirota, Akihiko, Hoge, James, Huang, Yau-De, Impellizzeri, C. M. Violette, Jiang, Homin, John, David, Kamble, Atish, Keisler, Ryan, Kimura, Kimihiro, Kono, Yusuke, Kubo, Derek, Kuroda, John, Lacasse, Richard, Laing, Robert A., Leitch, Erik M., Li, Chao-Te, Lin, Lupin C-C, Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Marson, Ralph G., Martin-Cocher, Pierre L., Massingill, Kyle D., Matulonis, Callie, McColl, Martin P., McWhirter, Stephen R., Messias, Hugo, Meyer-Zhao, Zheng, Michalik, Daniel, Montana, Alfredo, Montgomerie, William, Mora-Klein, Matias, Muders, Dirk, Nadolski, Andrew, Navarro, Santiago, Neilsen, Joseph, Nguyen, Chi H., Nishioka, Hiroaki, Norton, Timothy, Nowak, Michael A., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Parsons, Harriet, Penalver, Juan, Phillips, Neil M., Poirier, Michael, Pradel, Nicolas, Primiani, Rurik A., Raffin, Philippe A., Rahlin, Alexandra S., Reiland, George, Risacher, Christopher, Ruiz, Ignacio, Saez-Madain, Alejandro F., Sassella, Remi, Schellart, Pim, Shaw, Paul, Silva, Kevin M., Shiokawa, Hotaka, Smith, David R., Snow, William, Souccar, Kamal, Sousa, Don, Sridharan, T. K., Srinivasan, Ranjani, Stahm, William, Stark, Antony A., Story, Kyle, Timmer, Sjoerd T., Vertatschitsch, Laura, Walther, Craig, Wei, Ta-Shun, Whitehorn, Nathan, Whitney, Alan R., Woody, David P., Wouterloot, Jan G. A., Wright, Melvin, Yamaguchi, Paul, Yu, Chen-Yu, Zeballos, Milagros, Zhang, Shuo, and Ziurys, Lucy
Abstract: 3C 279 is an archetypal blazar with a prominent radio jet that show broadband flux density variability across the entire electromagnetic spectrum. We use an ultra-high angular resolution technique - global Very Long Baseline Interferometry (VLBI) at 1.3 mm (230 GHz) - to resolve the innermost jet of 3C 279 in order to study its fine-scale morphology close to the jet base where highly variable gamma -ray emission is thought to originate, according to various models. The source was observed during four days in April 2017 with the Event Horizon Telescope at 230 GHz, including the phased Atacama Large Millimeter/submillimeter Array (ALMA), at an angular resolution of similar to 20 mu as (at a redshift of z=0.536 this corresponds to similar to 0.13 pc similar to 1700 Schwarzschild radii with a black hole mass M-BH=8x10(8) M-circle dot). Imaging and model-fitting techniques were applied to the data to parameterize the fine-scale source structure and its variation. We find a multicomponent inner jet morphology with the northernmost component elongated perpendicular to the direction of the jet, as imaged at longer wavelengths. The elongated nuclear structure is consistent on all four observing days and across different imaging methods and model-fitting techniques, and therefore appears robust. Owing to its compactness and brightness, we associate the northern nuclear structure as the VLBI core. This morphology can be interpreted as either a broad resolved jet base or a spatially bent jet. We also find significant day-to-day variations in the closure phases, which appear most pronounced on the triangles with the longest baselines. Our analysis shows that this variation is related to a systematic change of the source structure. Two inner jet components move non-radially at apparent speeds of similar to 15 c and similar to 20 c (similar to 1.3 and similar to 1.7 mu as day(-1), respectively), which more strongly supports the scenario of traveling shocks or instabilities in a be
Published: 2020

38. ALMA Band-1 (35-50GHz) receiver: first light, performance, and road to completion

Author: Zmuidzinas, Jonas, Gao, Jian-Rong, Huang, Yau-De, Hwang, Yuh-Jing, Chiong, Chau-Ching, Yen, Hsi-Wei, Koch, Patrick Michel, Huang, Chi-Den, Liu, Bill, Chen, Cheng Lin, Tsai, Jwu Jiun, Hsiung, Wei-Ling, Chi, Li-Pin, Ho, Chin-Ting, Wang, Chao-Chin, Chien, Chen, Chu, You-Hua, Ho, Paul, Kemper, Francisca, Morata, Oscar, Gonzalez, Alvaro, Iguchi, Satoru, Uzawa, Yoshi, Iono, Daisuke, Nagai, Hiroshi, Effland, John, Saini, Kamaljeet, Pospieszalski, Marian, Henke, Doug, Yeung, Keith, Finger, Ricardo, Tapia, Valeria, Reyes, Nicolas, Siringo, Giorgio, Marconi, Gianni, and Cabezas, Rodrigo
Published: 2022
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39. Performance of pre-production band 1 receiver for the Atacama Large Millimeter/submillimeter Array (ALMA)

Author: Huang, Yau De Ted, Morata, Oscar, Koch, Patrick Michel, Kemper, Ciska, Hwang, Yuh Jing, Chiong, Chau Ching, Ho, Paul T.P., Chu, You Hua, Huang, Chi Den, Liu, Ching Tang, Hsieh, Fang Chia, Tseng, Yen Hsiang, Yang, Chia Hsiang, Tsay, Jinn Jy, Chang, Tsu, Ho, Chin Ting, Chiang, Po Han, Chang, Chih Cheng, Jian, Shou Ting, Hsu, Sung Po, Chien, Chen, Iguchi, Satoru, Asayama, Shin'ichiro, Iono, Daisuke, Gonzalez, Alvaro, Effland, John, Saini, Kamaljeet, Pospieszalski, Marian, Henke, Doug, Yeung, Keith, Finger, Ricardo, Tapia, Valeria, Reyes, Nicolas, Zmuidzinas, Jonas, Gao, Jian-Rong, and Electromagnetics
Subjects: Computer science, ALMA, Millimeter, Submillimeter Array, Band 1, Receiver, Receiver system, Remote sensing
Abstract: The Atacama Large Millimeter/submillimeter Array (ALMA) Band 1 receiver covers the frequency range of 35-50 GHz. An extension of up to 52 GHz is on a best-effort basis. A total of 73 units have to be built in two phases: 8 preproduction and then 65 production units. This paper reports on the assembly, testing, and performance of the preproduction Band 1 receiver. The infrastructure, integration, and evaluation of the fully-assembled Band 1 receiver system will be covered. Finally, a discussion of the technical and managerial challenges encountered for this large number of receivers will be presented.
Published: 2018
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40. First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

Author: Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Asada, Keiichi, Azulay, Rebecca, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Barrett, John, Bintley, Dan, Blackburn, Lindy, Boland, Wilfred, Bouman, Katherine L., Bower, Geoffrey C., Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Byun, Do-Young, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chatterjee, Shami, Chatterjee, Koushik, Chen, Ming-Tang, Chen, Yongjun, Cho, Ilje, Christian, Pierre, Conway, John E., Cordes, James M., Crew, Geoffrey B., Cui, Yuzhu, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Doeleman, Sheperd S., Eatough, Ralph P., Falcke, Heino, Fish, Vincent L., Fomalont, Ed, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Gomez, Jose L., Galison, Peter, Gammie, Charles F., Garcia, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Hecht, Michael H., Hesper, Ronald, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Johnson, Michael D., Jorstad, Svetlana, Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Jae-Young, Kim, Junhan, Kim, Jongsoo, Kino, Motoki, Koay, Jun Yi, Koch, Patrick M., Koyama, Shoko, Kramer, Michael, Kramer, Carsten, Krichbaum, Thomas P., Kuo, Cheng-Yu, Lauer, Tod R., Lee, Sang-Sung, Li, Yan-Rong, Li, Zhiyuan, Lindqvist, Michael, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin, Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Marti-Vidal, Ivan, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Yosuke, Mizuno, Izumi, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mueller, Cornelia, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Okino, Hiroki, Olivares, Hector, Ortiz-Leon, Gisela N., Oyama, Tomoaki, Ozel, Feryal, Palumbo, Daniel C. M., Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Pietu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Preciado-Lopez, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Rose, Mel, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruszczyk, Chet, Ryan, Benjamin R., Rygl, Kazi L. J., Sanchez, Salvador, Sanchez-Arguelles, David, Sasada, Mahito, Savolainen, Tuomas, Schloerb, F. Peter, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Tazaki, Fumie, Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Trent, Tyler, Trippe, Sascha, Tsuda, Shuichiro, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Wagner, Jan, Wardle, John, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wielgus, Maciek, Wong, George N., Wu, Qingwen, Young, Ken, Young, Andre, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhao, Guangyao, Zhao, Shan-Shan, Zhu, Ziyan, Algaba, Juan-Carlos, Allardi, Alexander, Amestica, Rodrigo, Anczarski, Jadyn, Bach, Uwe, Baganoff, Frederick K., Beaudoin, Christopher, Benson, Bradford A., Berthold, Ryan, Blanchard, Jay M., Blundell, Ray, Bustamente, Sandra, Cappallo, Roger, Castillo-Dominguez, Edgar, Chang, Chih-Cheng, Chang, Shu-Hao, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Chuter, Tim C., Rosado, Rodrigo Cordova, Coulson, Iain M., Crawford, Thomas M., Crowley, Joseph, David, John, Derome, Mark, Dexter, Matthew, Dornbusch, Sven, Dudevoir, Kevin A., Dzib, Sergio A., Eckart, Andreas, Eckert, Chris, Erickson, Neal R., Everett, Wendeline B., Faber, Aaron, Farah, Joseph R., Fath, Vernon, Folkers, Thomas W., Forbes, David C., Freund, Robert, Gomez-Ruiz, Arturo I., Gale, David M., Gao, Feng, Geertsema, Gertie, Graham, David A., Greer, Christopher H., Grosslein, Ronald, Gueth, Frederic, Haggard, Daryl, Halverson, Nils W., Han, Chih-Chiang, Han, Kuo-Chang, Hao, Jinchi, Hasegawa, Yutaka, Henning, Jason W., Hernandez-Gomez, Antonio, Herrero-Illana, Ruben, Heyminck, Stefan, Hirota, Akihiko, Hoge, James, Huang, Yau-De, Impellizzeri, C. M. Violette, Jiang, Homin, Kamble, Atish, Keisler, Ryan, Kimura, Kimihiro, Kono, Yusuke, Kubo, Derek, Kuroda, John, Lacasse, Richard, Laing, Robert A., Leitch, Erik M., Li, Chao-Te, Lin, Lupin C. -C., Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Marson, Ralph G., Martin-Cocher, Pierre L., Massingill, Kyle D., Matulonis, Callie, McColl, Martin P., McWhirter, Stephen R., Messias, Hugo, Meyer-Zhao, Zheng, Michalik, Daniel, Montana, Alfredo, Montgomerie, William, Mora-Klein, Matias, Muders, Dirk, Nadolski, Andrew, Navarro, Santiago, Neilsen, Joseph, Nguyen, Chi H., Nishioka, Hiroaki, Norton, Timothy, Nowak, Michael A., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Parsons, Harriet, Paine, Scott N., Penalver, Juan, Phillips, Neil M., Poirier, Michael, Pradel, Nicolas, Primiani, Rurik A., Raffin, Philippe A., Rahlin, Alexandra S., Reiland, George, Risacher, Christopher, Ruiz, Ignacio, Saez-Madain, Alejandro F., Sassella, Remi, Schellart, Pim, Shaw, Paul, Silva, Kevin M., Shiokawa, Hotaka, Smith, David R., Snow, William, Souccar, Kamal, Sousa, Don, Sridharan, T. K., Srinivasan, Ranjani, Stahm, William, Stark, Anthony A., Story, Kyle, Timmer, Sjoerd T., Vertatschitsch, Laura, Walther, Craig, Wei, Ta-Shun, Whitehorn, Nathan, Whitney, Alan R., Woody, David P., Wouterloot, Jan G. A., Wright, Melvin, Yamaguchi, Paul, Yu, Chen-Yu, Zeballos, Milagros, Zhang, Shuo, Ziurys, Lucy, Akiyama, Kazunori, Alberdi, Antxon, Alef, Walter, Asada, Keiichi, Azulay, Rebecca, Baczko, Anne-Kathrin, Ball, David, Balokovic, Mislav, Barrett, John, Bintley, Dan, Blackburn, Lindy, Boland, Wilfred, Bouman, Katherine L., Bower, Geoffrey C., Bremer, Michael, Brinkerink, Christiaan D., Brissenden, Roger, Britzen, Silke, Broderick, Avery E., Broguiere, Dominique, Bronzwaer, Thomas, Byun, Do-Young, Carlstrom, John E., Chael, Andrew, Chan, Chi-kwan, Chatterjee, Shami, Chatterjee, Koushik, Chen, Ming-Tang, Chen, Yongjun, Cho, Ilje, Christian, Pierre, Conway, John E., Cordes, James M., Crew, Geoffrey B., Cui, Yuzhu, Davelaar, Jordy, De Laurentis, Mariafelicia, Deane, Roger, Dempsey, Jessica, Desvignes, Gregory, Dexter, Jason, Doeleman, Sheperd S., Eatough, Ralph P., Falcke, Heino, Fish, Vincent L., Fomalont, Ed, Fraga-Encinas, Raquel, Freeman, William T., Friberg, Per, Fromm, Christian M., Gomez, Jose L., Galison, Peter, Gammie, Charles F., Garcia, Roberto, Gentaz, Olivier, Georgiev, Boris, Goddi, Ciriaco, Gold, Roman, Gu, Minfeng, Gurwell, Mark, Hada, Kazuhiro, Hecht, Michael H., Hesper, Ronald, Ho, Luis C., Ho, Paul, Honma, Mareki, Huang, Chih-Wei L., Huang, Lei, Hughes, David H., Ikeda, Shiro, Inoue, Makoto, Issaoun, Sara, James, David J., Jannuzi, Buell T., Janssen, Michael, Jeter, Britton, Jiang, Wu, Johnson, Michael D., Jorstad, Svetlana, Jung, Taehyun, Karami, Mansour, Karuppusamy, Ramesh, Kawashima, Tomohisa, Keating, Garrett K., Kettenis, Mark, Kim, Jae-Young, Kim, Junhan, Kim, Jongsoo, Kino, Motoki, Koay, Jun Yi, Koch, Patrick M., Koyama, Shoko, Kramer, Michael, Kramer, Carsten, Krichbaum, Thomas P., Kuo, Cheng-Yu, Lauer, Tod R., Lee, Sang-Sung, Li, Yan-Rong, Li, Zhiyuan, Lindqvist, Michael, Liu, Kuo, Liuzzo, Elisabetta, Lo, Wen-Ping, Lobanov, Andrei P., Loinard, Laurent, Lonsdale, Colin, Lu, Ru-Sen, MacDonald, Nicholas R., Mao, Jirong, Markoff, Sera, Marrone, Daniel P., Marscher, Alan P., Marti-Vidal, Ivan, Matsushita, Satoki, Matthews, Lynn D., Medeiros, Lia, Menten, Karl M., Mizuno, Yosuke, Mizuno, Izumi, Moran, James M., Moriyama, Kotaro, Moscibrodzka, Monika, Mueller, Cornelia, Nagai, Hiroshi, Nagar, Neil M., Nakamura, Masanori, Narayan, Ramesh, Narayanan, Gopal, Natarajan, Iniyan, Neri, Roberto, Ni, Chunchong, Noutsos, Aristeidis, Okino, Hiroki, Olivares, Hector, Ortiz-Leon, Gisela N., Oyama, Tomoaki, Ozel, Feryal, Palumbo, Daniel C. M., Patel, Nimesh, Pen, Ue-Li, Pesce, Dominic W., Pietu, Vincent, Plambeck, Richard, PopStefanija, Aleksandar, Porth, Oliver, Prather, Ben, Preciado-Lopez, Jorge A., Psaltis, Dimitrios, Pu, Hung-Yi, Ramakrishnan, Venkatessh, Rao, Ramprasad, Rawlings, Mark G., Raymond, Alexander W., Rezzolla, Luciano, Ripperda, Bart, Roelofs, Freek, Rogers, Alan, Ros, Eduardo, Rose, Mel, Roshanineshat, Arash, Rottmann, Helge, Roy, Alan L., Ruszczyk, Chet, Ryan, Benjamin R., Rygl, Kazi L. J., Sanchez, Salvador, Sanchez-Arguelles, David, Sasada, Mahito, Savolainen, Tuomas, Schloerb, F. Peter, Schuster, Karl-Friedrich, Shao, Lijing, Shen, Zhiqiang, Small, Des, Sohn, Bong Won, SooHoo, Jason, Tazaki, Fumie, Tiede, Paul, Tilanus, Remo P. J., Titus, Michael, Toma, Kenji, Torne, Pablo, Trent, Tyler, Trippe, Sascha, Tsuda, Shuichiro, van Bemmel, Ilse, van Langevelde, Huib Jan, van Rossum, Daniel R., Wagner, Jan, Wardle, John, Weintroub, Jonathan, Wex, Norbert, Wharton, Robert, Wielgus, Maciek, Wong, George N., Wu, Qingwen, Young, Ken, Young, Andre, Younsi, Ziri, Yuan, Feng, Yuan, Ye-Fei, Zensus, J. Anton, Zhao, Guangyao, Zhao, Shan-Shan, Zhu, Ziyan, Algaba, Juan-Carlos, Allardi, Alexander, Amestica, Rodrigo, Anczarski, Jadyn, Bach, Uwe, Baganoff, Frederick K., Beaudoin, Christopher, Benson, Bradford A., Berthold, Ryan, Blanchard, Jay M., Blundell, Ray, Bustamente, Sandra, Cappallo, Roger, Castillo-Dominguez, Edgar, Chang, Chih-Cheng, Chang, Shu-Hao, Chang, Song-Chu, Chen, Chung-Chen, Chilson, Ryan, Chuter, Tim C., Rosado, Rodrigo Cordova, Coulson, Iain M., Crawford, Thomas M., Crowley, Joseph, David, John, Derome, Mark, Dexter, Matthew, Dornbusch, Sven, Dudevoir, Kevin A., Dzib, Sergio A., Eckart, Andreas, Eckert, Chris, Erickson, Neal R., Everett, Wendeline B., Faber, Aaron, Farah, Joseph R., Fath, Vernon, Folkers, Thomas W., Forbes, David C., Freund, Robert, Gomez-Ruiz, Arturo I., Gale, David M., Gao, Feng, Geertsema, Gertie, Graham, David A., Greer, Christopher H., Grosslein, Ronald, Gueth, Frederic, Haggard, Daryl, Halverson, Nils W., Han, Chih-Chiang, Han, Kuo-Chang, Hao, Jinchi, Hasegawa, Yutaka, Henning, Jason W., Hernandez-Gomez, Antonio, Herrero-Illana, Ruben, Heyminck, Stefan, Hirota, Akihiko, Hoge, James, Huang, Yau-De, Impellizzeri, C. M. Violette, Jiang, Homin, Kamble, Atish, Keisler, Ryan, Kimura, Kimihiro, Kono, Yusuke, Kubo, Derek, Kuroda, John, Lacasse, Richard, Laing, Robert A., Leitch, Erik M., Li, Chao-Te, Lin, Lupin C. -C., Liu, Ching-Tang, Liu, Kuan-Yu, Lu, Li-Ming, Marson, Ralph G., Martin-Cocher, Pierre L., Massingill, Kyle D., Matulonis, Callie, McColl, Martin P., McWhirter, Stephen R., Messias, Hugo, Meyer-Zhao, Zheng, Michalik, Daniel, Montana, Alfredo, Montgomerie, William, Mora-Klein, Matias, Muders, Dirk, Nadolski, Andrew, Navarro, Santiago, Neilsen, Joseph, Nguyen, Chi H., Nishioka, Hiroaki, Norton, Timothy, Nowak, Michael A., Nystrom, George, Ogawa, Hideo, Oshiro, Peter, Parsons, Harriet, Paine, Scott N., Penalver, Juan, Phillips, Neil M., Poirier, Michael, Pradel, Nicolas, Primiani, Rurik A., Raffin, Philippe A., Rahlin, Alexandra S., Reiland, George, Risacher, Christopher, Ruiz, Ignacio, Saez-Madain, Alejandro F., Sassella, Remi, Schellart, Pim, Shaw, Paul, Silva, Kevin M., Shiokawa, Hotaka, Smith, David R., Snow, William, Souccar, Kamal, Sousa, Don, Sridharan, T. K., Srinivasan, Ranjani, Stahm, William, Stark, Anthony A., Story, Kyle, Timmer, Sjoerd T., Vertatschitsch, Laura, Walther, Craig, Wei, Ta-Shun, Whitehorn, Nathan, Whitney, Alan R., Woody, David P., Wouterloot, Jan G. A., Wright, Melvin, Yamaguchi, Paul, Yu, Chen-Yu, Zeballos, Milagros, Zhang, Shuo, and Ziurys, Lucy
Abstract: When surrounded by a transparent emission region, black holes are expected to reveal a dark shadow caused by gravitational light bending and photon capture at the event horizon. To image and study this phenomenon, we have assembled the Event Horizon Telescope, a global very long baseline interferometry array observing at a wavelength of 1.3 mm. This allows us to reconstruct event-horizon-scale images of the supermassive black hole candidate in the center of the giant elliptical galaxy M87. We have resolved the central compact radio source as an asymmetric bright emission ring with a diameter of 42 +/- 3 mu as, which is circular and encompasses a central depression in brightness with a flux ratio greater than or similar to 10: 1. The emission ring is recovered using different calibration and imaging schemes, with its diameter and width remaining stable over four different observations carried out in different days. Overall, the observed image is consistent with expectations for the shadow of a Kerr black hole as predicted by general relativity. The asymmetry in brightness in the ring can be explained in terms of relativistic beaming of the emission from a plasma rotating close to the speed of light around a black hole. We compare our images to an extensive library of ray-traced general-relativistic magnetohydrodynamic simulations of black holes and derive a central mass of M = (6.5 +/- 0.7) x 10(9) M-circle dot. Our radio-wave observations thus provide powerful evidence for the presence of supermassive black holes in centers of galaxies and as the central engines of active galactic nuclei. They also present a new tool to explore gravity in its most extreme limit and on a mass scale that was so far not accessible.
Published: 2019

41. The first-light receivers for the Greenland Telescope

Author: Chen, Ming-Tang, primary, Han, Johnson C., primary, Huang, Yau De, primary, Kubo, Derek, primary, Wei, Tashun, primary, Chang, Joshua S., primary, Inoue, Makota, primary, Matsushita, Satoki, primary, Asada, Keiichi, primary, Ho, Paul T. P., primary, Norton, Timothy, primary, Ogawa, Hideo, primary, Kimura, Kimihiro, primary, Hasagawa, Yutaka, primary, Chang, Chih-Cheng, primary, Huang, Ji-Dian, primary, Chen, Chung-Chen, primary, Raffin, Philippe, primary, Chilson, Ryan, primary, Srinivasan, Ranjani, primary, Liu, Kuan-Yu, primary, Li, Chao-Te, primary, Bintley, Daniel, primary, Wather, Craig, primary, Friberg, Per, primary, Dempsey, Jessica, primary, Srikanth, Sivasankaran, primary, and Liu, Ching-Tang, primary
Published: 2018
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42. Electronics instrumentation for the Greenland telescope

Author: Nishioka, Hiroaki, primary, Chilson, Ryan, primary, Srinivasan, Ranjani, primary, Wei, Ta-Shun, primary, Huang, Chih-Wei L., primary, Yu, Chen-Yu, primary, Oshiro, Peter, primary, Raffin, Philippe, primary, Huang, Yau-De, primary, Asada, Keiichi, primary, Koyama, Shoko, primary, Bintley, Daniel, primary, Walther, Craig, primary, Friberg, Per, primary, Chen, Ming-Tang, primary, Matsushita, Satoki, primary, Ho, Paul T. P., primary, Kubo, Derek Y., primary, Han, Johnson C. C., primary, Liu, Kuan-Yu, primary, Martin-Cocher, Pierre, primary, Yen, Sheng-Feng, primary, Fu, Kuo-Chieh, primary, Jiang, homin, primary, Chang, Shu-Hao, primary, Chen, Chung-Cheng, primary, Inoue, Makoto, primary, Koch, Patrick, primary, Shaw, Yang-Tai, primary, Norton, Timothy J., primary, Patel, Nimesh A., primary, Doeleman, Shepherd S., primary, Dempsey, Jessica, primary, Liu, Ching-Tang, primary, Han, Kou-Chang, primary, Chang, Song-Chu, primary, Lu, Li-Ming, primary, Ogawa, Hideo, primary, Kimura, Kimihiro, primary, and Hasegawa, Yutaka, primary
Published: 2018
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43. Performance of pre-production band 1 receiver for the Atacama Large Millimeter/submillimeter Array (ALMA)

Author: Yang, Chia-Hsiang, primary, Ho, Chin-Ting, primary, Chiang, Po-Han, primary, Chang, Chih-Cheng, primary, Jian, Shou-Ting, primary, Hsu, Sung-Po, primary, Chien, Chen, primary, Reyes, Nicolas, primary, Huang, Yau-De, primary, Morata, Oscar, primary, Koch, Patrick M., primary, Kemper, Ciska, primary, Hwang, Yuh-Jing, primary, Chiong, Chau-Ching, primary, Ho, Paul, primary, Chu, You-Hua, primary, Iguchi, Satoru, primary, Asayama, Shin'ichiro, primary, Iono, Daisuke, primary, Gonzalez, Alvaro, primary, Effland, John, primary, Saini, Kamaljeet, primary, Pospieszalski, Marian, primary, Henke, Doug, primary, Finger, Ricardo, primary, Huang, Chi-Den, primary, Liu, Ching-Tang, primary, Tsay, Jinn jy, primary, Chang, Tsu, primary, Hsieh, Fang-Chia, primary, Tseng, Yen-Hsiang, primary, Yeung, Keith, primary, and Tapia, Valeria, primary
Published: 2018
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44. Control and monitoring system for the Greenland telescope: computers, network and software

Author: Nishioka, Hiroaki, primary, Huang, Chih-Wei L., primary, Patel, Patel A., primary, Kubo, Derek Y., primary, Martin-Cocher, Pierre, primary, Han, Chih-Chiang J., primary, Yu, Chen-Yu, primary, Jiang, Homin, primary, Srinivasan, Ranjani, primary, Matsushita, Satoki, primary, Asada, Keiichi, primary, Bower, Geoffrey C., primary, Chang, Shu-Hao, primary, Chen, Ming-Tang, primary, Ho, Paul T. P., primary, Huang, Yau-De, primary, Inoue, Makoto, primary, Koyama, Shoko, primary, Lin, Lupin C. C., primary, Liu, Ching-Tang, primary, Norton, Timothy J., primary, Nystrom, George U., primary, Wei, Ta-Shun, primary, Berthold, Ryan M., primary, Friberg, Per, primary, Chuter, Tim, primary, Liu, Kuan-Yu, primary, Walther, Craig A., primary, Koay, Jun-Yi, primary, Lo, Wen-Ping, primary, Koch, Patrick M., primary, Peter, Oshiro, primary, Meyer-Zhao, Zheng, primary, Bintley, Dan, primary, Jessica, Dempsey, primary, Nakamura, Masanori, primary, and Doeleman, Sheperd S., primary
Published: 2018
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45. Commissioning status of the Greenland telescope

Author: Matsushita, Satoki, primary, Koay, Jun-Yi, primary, Lo, Wen-Ping, primary, Faber, Aaron, primary, Han, Kou-Chang, primary, Chang, Song-Chu, primary, Lu, Li-Ming, primary, Asada, Keiichi, primary, Han, Johnson C. C., primary, Nishioka, Hiroaki, primary, Koyama, Shoko, primary, Huang, Chih-Wei L., primary, Lin, Lupin C. C., primary, Liu, Kuan-Yu, primary, Yu, Chen-Yu, primary, Chen, Ming-Tang, primary, Ho, Paul T. P., primary, Kubo, Derek Y., primary, Srinivasan, Ranjani, primary, Bower, Geoffrey C., primary, Inoue, Makoto, primary, Bintley, Dan, primary, Friberg, Per, primary, Berthold, Ryan M., primary, Walther, Craig A., primary, Dempsey, Jessica T., primary, Weintroub, Jonathan, primary, Young, André, primary, Young, Ken, primary, Patel, Nimesh A., primary, Koch, Patrick M., primary, Meyer-Zhao, Zheng, primary, Byun, Do-Young, primary, Algaba Marcos, Juan-Carlos, primary, Chang, Shu-Hao, primary, Chen, Chung-Chen, primary, Chilson, Ryan, primary, Huang, Yau-De, primary, Jiang, Homin, primary, Liu, Ching-Tang, primary, Martin-Cocher, Pierre, primary, Nakamura, Masanori, primary, Nystrom, George, primary, Oshiro, Peter, primary, Pu, Hung-Yi, primary, Raffin, Philippe, primary, Shaw, Paul, primary, Snow, Williams, primary, Wei, Ta-Shun, primary, Sridharan, T. K., primary, Doeleman, Sheperd S., primary, Brissenden, Roger, primary, Ogawa, Hideo, primary, Kimura, Kimihiro, primary, Hasegawa, Yutaka, primary, Norton, Timothy J., primary, Allardi, Alex, primary, and Hao, Jinchi, primary
Published: 2018
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46. Band-1 receiver front-end cartridges for Atacama Large Millimeter/submillimeter Array (ALMA): design and development toward production

Author: Hwang, Yuh Jing, Chiong, Chau Ching, Huang, Yau De, Huang, Chi Den, Liu, Ching Tang, Kuo, Yue Fang, Weng, Shou Hsien, Ho, Chin Ting, Chiang, Po Han, Wu, Hsiao Ling, Chang, Chih Cheng, Jian, Shou Ting, Lee, Chien Feng, Lee, Yi Wei, Pospieszalski, Marian, Henke, Doug, Finger, Ricardo, Tapia, Valeria, Gonzalez, Alvaro, Zmuidzinas, Jonas, Holland, Wayne S., and Electromagnetics
Subjects: Physics, Noise temperature, business.industry, Aperture, Amplifier, Superheterodyne receiver, 020206 networking & telecommunications, Gain compression, Resistive transistor mixer, 02 engineering and technology, Atacama Large Millimeter Array, 01 natural sciences, law.invention, 010309 optics, Optics, Heterodyne receiver, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Cryogenically cooled low-noise amplifier, Millimeter, Radio frequency, Local oscillators, business
Abstract: The ALMA Band-1 receiver front-end prototype cold and warm cartridge assemblies, including the system and key components for ALMA Band-1 receivers have been developed and two sets of prototype cartridge were fully tested. The measured aperture efficiency for the cold receiver is above the 80% specification except for a few frequency points. Based on the cryogenically cooled broadband low-noise amplifiers provided by NRAO, the receiver noise temperature can be as low as 15 - 32K for pol-0 and 17 - 30K for pol-1. Other key testing items are also measured. The receiver beam pattern is measured, the results is well fit to the simulation and design. The pointing error extracted from the measured beam pattern indicates the error is 0.1 degree along azimuth and 0.15 degree along elevation, which is well fit to the specification (smaller than 0.4 degree). The equivalent hot load temperature for 5% gain compression is 492 - 4583K, which well fit to the specification of 5% with 373K input thermal load. The image band suppression is higher than 30 dB typically and the worst case is higher than 20 dB for 34GHz RF signal and 38GHz LO signal, which is all higher than 7 dB required specification. The cross talk between orthogonal polarization is smaller than -85 dB based on present prototype LO. The amplitude stability is below 2.0 x 10-7, which is fit to the specification of 4.0 x 10-7 for timescales in the range of 0.05 s ≤ T ≤ 100 s. The signal path phase stability measured is smaller than 5 fs, which is smaller than 22 fs for Long term (delay drift) 20 s ≤ T < 300 sec. The IF output phase variation is smaller than 3.5° rms typically, and the specification is less than 4.5° rms. The measured IF output power level is -28 to -30.5 dBm with 300K input load. The measured IF output power flatness is less than 5.6 dB for 2GHz window, and 1.3dB for 31MHz window. The first batch of prototype cartridges will be installed on site for further commissioning on July of 2017.
Published: 2016
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47. Performance of the first three preproduction 35–50 GHz receiver front-ends for atacama large millimeter / submillimeter array

Author: Hwang, Yuh-Jing, primary, Ho, Chin-Ting, additional, Jian, Shou-Ting, additional, Lee, Chien-Feng, additional, Lee, Yi-Wei, additional, Gonzalez, Alvaro, additional, Effland, John, additional, Saini, Kamaljeet, additional, Pospieszalski, Marian, additional, Finger, Ricardo, additional, Tapia, Valeria, additional, Chiong, Chau-Ching, additional, Reyes, Nicolas, additional, Huang, Yau-De Ted, additional, Huang, Chi-Den, additional, Liu, Ching-Tang, additional, Hsieh, Fang-Chia, additional, Tseng, Yen-Hsiang, additional, Chiang, Po-Han, additional, and Chang, Chih-Cheng, additional
Published: 2017
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48. Control and monitoring software for the Greenland Telescope

Author: Guzman, Juan C., Ibsen, Jorge, Huang, Chih-Wei Locutus, Matsushita, Satoki, Patel, Nimesh A., Srinivasan, Ranjani, Asada, Keiichi, Bower, Geoffrey, Chang, Shu-Hao, Chen, Chung-Cheng, Chen, Ming-Tang, Chilson, Ryan, Han, Chih-Chiang, Ho, Paul T. P., Huang, Yau-De, Inoue, Makoto, Jiang, Homin, Koay, Jun Yi, Koch, Patrick M., Koyama, Shoko, Kubo, Derek Y., Kuo, Cheng-Yu, Li, Chao-Te, Liu, Ching-Tang, Liu, Kuan-Yu, Lo, Wen-Ping, Martin-Cocher, Pierre, Nakamura, Masanori, Norton, Timothy J., Nystrom, George, Oshiro, Peter, Park, Jongho, Pu, Hung-Yi, Raffin, Philippe, Rao, Ramprasad, Romero-Cañizales, Cristina, Shaw, Paul, Sridharan, T. K., Wei, Ta-Shun, and Yu, Chen-Yu
Published: 2020
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49. Status of scientific commissioning of the Greenland Telescope

Author: Marshall, Heather K., Spyromilio, Jason, Usuda, Tomonori, Koay, Jun Yi, Matsushita, Satoki, Asada, Keiichi, Patel, Nimesh A., Huang, Chih-Wei L., Bower, Geoffrey, Chang, Shu-Hao, Chen, Ming-Tang, Chen, Chung-Cheng, Chilson, Ryan, Han, Chih-Chiang, Ho, Paul T. P., Huang, Yau-De, Inoue, Makoto, Jiang, Homin, Koch, Patrick M., Koyama, Shoko, Kuo, Cheng-Yu, Kubo, Derek, Li, Chao-Te, Liu, Ching-Tang, Liu, Kuan-Yu, Lo, Wen-Ping, Martin-Cocher, Pierre, Nakamura, Masanori, Norton, Timothy J., Nystrom, George, Oshiro, Peter, Park, Jongho, Pu, Hung-Yi, Raffin, Philippe, Rao, Ramprasad, Romero-Canizales, Cristina, Shaw, Paul, Sridharan, Tirupati K., Srinivasan, Ranjani, Wei, Ta-Shun, and Yu, Chen-Yu
Published: 2020
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50. AMiBA: CLUSTER SUNYAEV–ZEL’DOVICH EFFECT OBSERVATIONS WITH THE EXPANDED 13-ELEMENT ARRAY

Author: Lin, Kai-Yang, primary, Nishioka, Hiroaki, additional, Wang, Fu-Cheng, additional, Huang, Chih-Wei Locutus, additional, Liao, Yu-Wei, additional, Wu, Jiun-Huei Proty, additional, Koch, Patrick M., additional, Umetsu, Keiichi, additional, Chen, Ming-Tang, additional, Chan, Shun-Hsiang, additional, Chang, Shu-Hao, additional, Chang, Wen-Hsuan Lucky, additional, Cheng, Tai-An, additional, Duy, Hoang Ngoc, additional, Fu, Szu-Yuan, additional, Han, Chih-Chiang, additional, Ho, Solomon, additional, Ho, Ming-Feng, additional, Ho, Paul T. P., additional, Huang, Yau-De, additional, Jiang, Homin, additional, Kubo, Derek Y., additional, Li, Chao-Te, additional, Lin, Yu-Chiung, additional, Liu, Guo-Chin, additional, Martin-Cocher, Pierre, additional, Molnar, Sandor M., additional, Nunez, Emmanuel, additional, Oshiro, Peter, additional, Pai, Shang-Ping, additional, Raffin, Philippe, additional, Ridenour, Anthony, additional, Shih, Chia-You, additional, Stoebner, Sara, additional, Teo, Giap-Siong, additional, Yeh, Jia-Long Johnny, additional, Williams, Joshua, additional, and Birkinshaw, Mark, additional
Published: 2016
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