Author: "Conceição, Rúben" - Searchworks@Jio Institute Digital Library Search Results

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1. Proton-air interactions at ultra-high energies in muon-depleted air showers with different depths

Author: Cazon, Lorenzo, Conceição, Ruben, Martins, Miguel Alexandre, and Riehn, Felix
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: The hardness of the energy spectrum of neutral pions produced in proton-air interactions at ultra-high energies, above $10^{18}$ eV, is constrained by the steepness of the shower-to-shower distribution of the number of muons in muon-depleted extensive air showers. In this work, we find that this steepness, quantified by the parameter $\Lambda_\mu$, evolves with the depth of the shower maximum, $X_{\max}$, assuming a universal value for shallow showers and an enhanced dependence on the high-energy hadronic interaction model for deep showers. We show that Xmax probes the so-called hadronic activity of the first interaction, thus allowing direct access to the energy spectrum of neutral pions in different regions of the kinematic phase space of the first interaction. We verify that the unbiased measurement of $\Lambda_\mu$ is possible for realistic mass composition expectations. Finally, we infer that the statistical precision in $\Lambda_\mu$ required to distinguish between hadronic interaction models can be achieved in current extensive air shower detectors, given their resolution and exposure.
Published: 2024
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2. $P_{tail}^{\alpha}$: a high resolution gamma/hadron and composition discriminant variable for Water-Cherenkov Detector cosmic-ray observatories

Author: Conceição, Ruben, Costa, Pedro J., Gibilisco, Lucio, Pimenta, Mário, and Tomé, Bernardo
Subjects: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment, High Energy Physics - Phenomenology, Physics - Instrumentation and Detectors
Abstract: The precise and efficient identification of the nature of the primary cosmic rays on an event-by-event basis stands as a fundamental aspiration for any cosmic ray observatory. In particular, the detection and characterization of gamma ray events are challenged by their occurrence within an overwhelmingly greater flux of charged cosmic rays spanning several orders of magnitude. The intricacies of distinguishing between cosmic ray compositions and the inherent uncertainties associated with hadronic interactions present formidable challenges, which, if not properly addressed, can introduce significant sources of systematic errors. This work introduces a novel composition discriminant variable, $P_{tail}^{\alpha}$, which quantifies the number of Water Cherenkov Detectors with a signal well above the mean signal observed in WCDs located at an equivalent distance from the shower core, in events with approximately the same energy at the ground. This new event variable is then shown to be, in the reconstructed energy range $10\,{\rm TeV}$ to $1.6\,{\rm PeV}$, well correlated with the total number of muons that hit, in the same event, all the observatory stations located at a distance greater than $200\,{\rm m}$ from the shower core. The two variables should thus have similar efficiencies in the selection of high-purity gamma event samples and in the determination of the nature of charged cosmic ray events., Comment: 6 pages, 7 figures
Published: 2023

3. The Southern Wide-field Gamma-ray Observatory

Author: Conceição, Ruben
Subjects: High Energy Physics - Experiment, Astrophysics - High Energy Astrophysical Phenomena
Abstract: The Southern Wide-field Gamma-ray Observatory (SWGO) is an R&D project to plan and design the next observatory to detect gamma rays in the Southern hemisphere. The experiment, planned to be placed at an altitude greater than 4400 m, is primarily based on water Cherenkov detectors units and is expected to measure gamma rays from a few hundred GeV up to the PeV scale. SWGO will complement CTA and the existing ground-based particle detectors of the Northern Hemisphere, namely HAWC and LHAASO, having a rich science programme. The collaboration is highly invested in evaluating different detector and array configurations, prototyping, and site search. In this presentation, I shall present an overview of the project's activities, achievements and future plans., Comment: General overview presentation at the ICRC23
Published: 2023

4. Proton-proton interactions at the Highest Energies: the Grey-Disk and the Core-Corona models

Author: Conceição, Ruben and Pimenta, Mário
Subjects: High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena
Abstract: In this letter, the Grey-Disk and the Core-Corona models are combined in a scenario that aims to explain different unexpected features observed in the interactions of the highest energy particles in the Earth's atmosphere. In particular, the observed distributions of $X_{\rm max}$ and $N_\mu$ are explained, assuming that the ultra-high-energy cosmic ray spectrum is dominated by protons produced by a few extra-galactic sources with different injection spectra and maximum energy cutoffs. The compliance of this heterodox scenario with other relevant observations as the instep region in the energy spectrum, the event-by-event correlations between $X_{\rm max}$ and the detected signal at the ground and the absence of detection, so far, of UHE neutrinos or photons, are also briefly discussed. If confirmed, such a scenario would dramatically change the present understanding of the UHECR primary composition and, thus, the characteristics of their sources., Comment: 6 pages, 2 figures
Published: 2022

5. Universality of the muon component of extensive air showers

Author: Cazon, Lorenzo, Conceição, Rúben, and Riehn, Felix
Subjects: High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena
Abstract: In extensive air shower experiments, the number of muons crossing a detector at a given position, as well as their arrival time, arrival direction, and energy, are determined by a more fundamental 3-dimensional distribution linked to the hadronic core of the shower. Muons are produced high up in the atmosphere after the decay of mesons in the hadronic cascade. The distributions of production depth, energy, and transverse momentum of muons are enough to fully predict the muon component of air showers in any particular observational condition. By using air-shower simulations with the state-of-the-art hadronic interaction models, the mentioned distributions at production are analyzed as a function of zenith angle, primary mass, and hadronic interaction model, and their level of universality is studied and assessed in an exhaustive manner for the first time.
Published: 2022
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6. Evaluation of the potential of a gamma-ray observatory to detect astrophysical neutrinos through inclined showers

Author: Alvarez-Muñiz, Jaime, Conceição, Ruben, Costa, Pedro J., Pimenta, Mário, and Tomé, Bernardo
Subjects: High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Experiment
Abstract: We assess the capabilities of a ground-based gamma-ray observatory to detect astrophysical neutrinos with energies in the $100\,{\rm TeV}$ to $100\,{\rm PeV}$ range. The identification of these events would be done through the measurement of very inclined extensive air showers induced by downward-going and upward-going neutrinos. The discrimination of neutrino-induced showers in the overwhelming cosmic-ray background is achieved by analysing the balance of the total electromagnetic and muonic signals of the shower at the ground. We demonstrate that a ${\rm km^2}$-scale wide field-of-view ground-based gamma-ray observatory could detect a couple of Very-High to Ultra-High energy (VHE-UHE) neutrino events per year with a reasonable pointing accuracy, making it an interesting facility for multi-messenger studies with both photons and neutrinos., Comment: 12 pages, 14 figures, accepted in Phys.Rev.D
Published: 2022
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7. On the muon scale of air showers and its application to the AGASA data

Author: Gesualdi, Flavia, Dembinski, Hans, Shinozaki, Kenji, Supanitsky, Daniel, Pierog, Tanguy, Cazon, Lorenzo, Soldin, Dennis, and Conceição, Ruben
Subjects: Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Experiment
Abstract: Recently, several experiments reported a muon deficit in air shower simulations with respect to the data. This problem can be studied using an estimator that quantifies the relative muon content of the data with respect to those of proton and iron Monte Carlo air shower simulations. We analyze two estimators. The first one, based on the logarithm of the mean of the muon content, is built from experimental considerations. It is ideal for comparing results from different experiments as it is independent of the detector resolution. The second estimator is based on the mean of the logarithm of the muon content, which implies that it depends on shower-to-shower fluctuations. It is linked to the mean-logarithmic mass $\left \langle \ln A \right \rangle$ through the Heitler-Matthews model. We study the properties of the estimators and their biases considering the knowns and unknowns of typical experiments. Furthermore, we study these effects in measurements of the muon density at $1000\,$m from the shower axis obtained by the Akeno Giant Air Shower Array (AGASA). Finally, we report the estimates of the relative muon content of the AGASA data, which support a muon deficit in simulations. These estimates constitute valuable additional information of the muon content of air showers at the highest energies., Comment: Proceedings of the 37th International Cosmic Ray Conference (ICRC 2021)
Published: 2021

8. Self-consistent approach for measuring the energy spectra and composition of cosmic rays and determining the properties of hadronic interactions at high energy

Author: Addazi, Andrea, Buckley, Andy, Bellido, Jose, Cao, Zhen, Conceição, Ruben, Cazon, Lorenzo, di Matteo, Armando, Dawson, Bruce, Kawata, Kasumasa, Lipari, Paolo, Mariazzi, Analiza, Muzio, Marco, Ogio, Shoichi, Ostapchenko, Sergey, Pimenta, Mário, Pierog, Tanguy, Romero-Wolf, Andres, Riehn, Felix, Schmidt, David, Santos, Eva, Schroeder, Frank, Caballero-Mora, Karen, Scott, Pat, Sako, Takashi, Peixoto, Carlos Todero, Ulrich, Ralf, Veberic, Darko, and White, Martin
Subjects: Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Experiment, High Energy Physics - Phenomenology, High Energy Physics - Theory
Abstract: Air showers, produced by the interaction of energetic cosmic rays with the atmosphere, are an excellent alternative to study particle physics at energies beyond any human-made particle accelerator. For that, it is necessary to identify first the mass composition of the primary cosmic ray (and its energy). None of the existing high energy interaction models have been able to reproduce coherently all air shower observables over the entire energy and zenith angle phase space. This is despite having tried all possible combinations for the cosmic ray mass composition. This proposal outlines a self-consistent strategy to study high energy particle interactions and identify the energy spectra and mass composition of cosmic rays. This strategy involves the participation of different particle accelerators and astrophysics experiments. This is important to cover the entire cosmic ray energy range and a larger phase-space of shower observables to probe the high energy interaction models., Comment: Snowmass2021 - Letter of Interest
Published: 2020

9. Constraining the energy spectrum of neutral pions in ultra-high-energy proton-air interactions

Author: Cazon, Lorenzo, Conceição, Ruben, Martins, Miguel Alexandre, and Riehn, Felix
Subjects: Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Phenomenology
Abstract: Fluctuations in the muon content of extensive air showers are anticorrelated to the fluctuations of the energy taken by the neutral pions which emerge from the first interaction of the cosmic ray in the atmosphere. We show that the high-energy tail of the neutral pion spectrum produced in the first proton-air interaction can be constrained, within the uncertainties of present cosmic ray experiments, through the analysis of the shower-to-shower distribution of the muon content of the air showers, $P(N_{\mu})$.
Published: 2020
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10. Probing the high energy spectrum of neutral pions in ultra-high energy proton-Air interactions

Author: Cazon, Lorenzo, Conceição, Ruben, Martins, Miguel, and Riehn, Felix
Subjects: High Energy Physics - Phenomenology, High Energy Physics - Experiment
Abstract: The interaction of ultra-high energy cosmic rays with the atmosphere nuclei has long been seen as a unique opportunity to study hadronic interactions above energies attainable by accelerators. However, so far the multiparticle production properties of the first interaction have been difficult to assess as they are masked by the many interactions that outline the shower development. In this work, we demonstrate, that relevant properties of the ultra-high energy first interaction can be accessed through the analysis of the shower-to-shower distribution of muons arriving at the ground. In particular, it is shown that the slope of the low-tail of the number of muon distribution measured at the ground is a direct link to the high energy spectrum of neutral pions produced in the interaction of the primary protons. In this presentation, it will also address the experimental feasibility of such measurements and their connection with physical quantities being currently measured at the Large Hadron Collider., Comment: Proceedings of the ICRC 2019, Madison, USA, 8 pages, 10 figures
Published: 2019

11. Automatic Design of Artificial Neural Networks for Gamma-Ray Detection

Author: Assunção, Filipe, Correia, João, Conceição, Rúben, Pimenta, Mário, Tomé, Bernardo, Lourenço, Nuno, and Machado, Penousal
Subjects: Computer Science - Neural and Evolutionary Computing
Abstract: The goal of this work is to investigate the possibility of improving current gamma/hadron discrimination based on their shower patterns recorded on the ground. To this end we propose the use of Convolutional Neural Networks (CNNs) for their ability to distinguish patterns based on automatically designed features. In order to promote the creation of CNNs that properly uncover the hidden patterns in the data, and at same time avoid the burden of hand-crafting the topology and learning hyper-parameters we resort to NeuroEvolution; in particular we use Fast-DENSER++, a variant of Deep Evolutionary Network Structured Representation. The results show that the best CNN generated by Fast-DENSER++ improves by a factor of 2 when compared with the results reported by classic statistical approaches. Additionally, we experiment ensembling the 10 best generated CNNs, one from each of the evolutionary runs; the ensemble leads to an improvement by a factor of 2.3. These results show that it is possible to improve the gamma/hadron discrimination based on CNNs that are automatically generated and are trained with instances of the ground impact patterns.
Published: 2019
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12. The Properties of Neutrinos

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, Ashby, Neil, Series Editor, Brantley, William, Series Editor, Deady, Matthew, Series Editor, Fowler, Michael, Series Editor, Hjorth-Jensen, Morten, Series Editor, Inglis, Michael, Series Editor, Luokkala, Barry, Series Editor, De Angelis, Alessandro, Pimenta, Mário, and Conceição, Ruben
Published: 2021
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13. The Higgs Mechanism and the Standard Model of Particle Physics

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, Ashby, Neil, Series Editor, Brantley, William, Series Editor, Deady, Matthew, Series Editor, Fowler, Michael, Series Editor, Hjorth-Jensen, Morten, Series Editor, Inglis, Michael, Series Editor, Luokkala, Barry, Series Editor, De Angelis, Alessandro, Pimenta, Mário, and Conceição, Ruben
Published: 2021
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14. The Standard Model of Cosmology and the Dark Universe

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, Ashby, Neil, Series Editor, Brantley, William, Series Editor, Deady, Matthew, Series Editor, Fowler, Michael, Series Editor, Hjorth-Jensen, Morten, Series Editor, Inglis, Michael, Series Editor, Luokkala, Barry, Series Editor, De Angelis, Alessandro, Pimenta, Mário, and Conceição, Ruben
Published: 2021
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15. Particle Detection

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, Ashby, Neil, Series Editor, Brantley, William, Series Editor, Deady, Matthew, Series Editor, Fowler, Michael, Series Editor, Hjorth-Jensen, Morten, Series Editor, Inglis, Michael, Series Editor, Luokkala, Barry, Series Editor, De Angelis, Alessandro, Pimenta, Mário, and Conceição, Ruben
Published: 2021
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16. Interactions and Field Theories

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, Ashby, Neil, Series Editor, Brantley, William, Series Editor, Deady, Matthew, Series Editor, Fowler, Michael, Series Editor, Hjorth-Jensen, Morten, Series Editor, Inglis, Michael, Series Editor, Luokkala, Barry, Series Editor, De Angelis, Alessandro, Pimenta, Mário, and Conceição, Ruben
Published: 2021
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17. Particles and Symmetries

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, Ashby, Neil, Series Editor, Brantley, William, Series Editor, Deady, Matthew, Series Editor, Fowler, Michael, Series Editor, Hjorth-Jensen, Morten, Series Editor, Inglis, Michael, Series Editor, Luokkala, Barry, Series Editor, De Angelis, Alessandro, Pimenta, Mário, and Conceição, Ruben
Published: 2021
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18. Astrobiology and the Relation of Fundamental Physics to Life

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, Ashby, Neil, Series Editor, Brantley, William, Series Editor, Deady, Matthew, Series Editor, Fowler, Michael, Series Editor, Hjorth-Jensen, Morten, Series Editor, Inglis, Michael, Series Editor, Luokkala, Barry, Series Editor, De Angelis, Alessandro, Pimenta, Mário, and Conceição, Ruben
Published: 2021
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19. Basics of Particle Physics

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, Ashby, Neil, Series Editor, Brantley, William, Series Editor, Deady, Matthew, Series Editor, Fowler, Michael, Series Editor, Hjorth-Jensen, Morten, Series Editor, Inglis, Michael, Series Editor, Luokkala, Barry, Series Editor, De Angelis, Alessandro, Pimenta, Mário, and Conceição, Ruben
Published: 2021
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20. Cosmic Rays and the Development of Particle Physics

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, Ashby, Neil, Series Editor, Brantley, William, Series Editor, Deady, Matthew, Series Editor, Fowler, Michael, Series Editor, Hjorth-Jensen, Morten, Series Editor, Inglis, Michael, Series Editor, Luokkala, Barry, Series Editor, De Angelis, Alessandro, Pimenta, Mário, and Conceição, Ruben
Published: 2021
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21. Understanding the Universe: Cosmology, Astrophysics, Particles, and Their Interactions

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, Ashby, Neil, Series Editor, Brantley, William, Series Editor, Deady, Matthew, Series Editor, Fowler, Michael, Series Editor, Hjorth-Jensen, Morten, Series Editor, Inglis, Michael, Series Editor, Luokkala, Barry, Series Editor, De Angelis, Alessandro, Pimenta, Mário, and Conceição, Ruben
Published: 2021
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22. Messengers from the High-Energy Universe

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, Ashby, Neil, Series Editor, Brantley, William, Series Editor, Deady, Matthew, Series Editor, Fowler, Michael, Series Editor, Hjorth-Jensen, Morten, Series Editor, Inglis, Michael, Series Editor, Luokkala, Barry, Series Editor, De Angelis, Alessandro, Pimenta, Mário, and Conceição, Ruben
Published: 2021
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23. Probing the $\pi^0$ spectrum at high-$x$ in proton-Air interactions at ultra-high energies

Author: Cazon, Lorenzo, Conceição, Ruben, Martins, Miguel Alexandre, and Riehn, Felix
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: The average number of muons in air showers and its connection with shower development has been studied extensively in the past. With the upcoming detector upgrades, UHECR observatories will be able to probe higher moments of the distribution of the number of muons. Here a study of the physics of the fluctuations of the muon content is presented. In addition to proving that the fluctuations must be dominated by the first interactions, we show that low-$N_{\mu}$ tail of the shower-to-shower distribution of the number of muons is determined by the high-$x_{\rm L}$ region of the production cross-section of neutral pions in the first interaction., Comment: Proceedings of Ultra High Energy Cosmic Rays 2018
Published: 2018
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24. Probing the energy spectrum of hadrons in proton air interactions at ultrahigh energies through the fluctuations of the muon content of extensive air showers

Author: Cazon, Lorenzo, Conceição, Ruben, and Riehn, Felix
Subjects: High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena
Abstract: We demonstrate that the shower-to-shower fluctuations of the muon content of extensive air showers correlate with the fluctuations of a variable of the first interaction of Ultra High Energy Cosmic Rays, which is computed from the fraction of energy carried by the hadrons that sustain the hadronic cascade. The influence of subsequent stages of the shower development is found to play a sub-dominant role. As a consequence, the shower-to-shower distribution of the muon content is a direct probe of the hadron energy spectrum of interactions beyond 100 TeV center of mass energies.
Published: 2018
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25. Autonomous RPCs for a Cosmic Ray ground array

Author: Assis, Pedro, Blanco, Alberto, Carolino, Nuno, Conceição, Ruben, Cunha, Orlando, Dobrigkeit, Carola, Ferreira, Miguel, Fonte, Paulo, Lopes, Luis, Luz, Ricardo, Martins, Victor Barbosa, Mendes, Luis, Pereira, Américo, Pimenta, Mário, Sarmento, Raul, Shellard, Ronald, de Souza, Vitor, and Tomé, Bernardo
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors
Abstract: We report on the behaviour of Resistive Plate Chambers (RPC) developed for muon detection in ultra-high energy cosmic ray (UHECR) experiments. The RPCs were developed for the MARTA project and were tested on field conditions. These RPCs cover an area of $1.5 \times 1.2\,{m^2}$ and are instrumented with 64 pickup electrodes providing a segmentation better than $20\,$cm. By shielding the detector units with enough slant mass to absorb the electromagnetic component in the air showers, a clean measurement of the muon content is allowed, a concept to be implemented in a next generation of UHECR experiments. The operation of a ground array detector poses challenging demands, as the RPC must operate remotely under extreme environmental conditions, with limited budgets for power and minimal maintenance. The RPC, DAQ, High Voltage and monitoring systems are enclosed in an aluminium-sealed case, providing a compact and robust unit suited for outdoor environments, which can be easily deployed and connected. The RPCs developed at LIP-Coimbra are able to operate using a very low gas flux, which allows running them for few years with a small gas reservoir. Several prototypes have already been built and tested both in the laboratory and outdoors. We report on the most recent tests done in the field that show that the developed RPCs have operated in a stable way for more than 2 years in field conditions., Comment: To appear in the proceedings of the 35th International Cosmic Ray Conference (ICRC2017), Busan, South Korea. Presented by R. Concei\c{c}\~{a}o. 8 pages
Published: 2017

26. Interpretation of measurements of the number of muons in extensive air shower experiments

Author: Prado, Raul Ribeiro, Conceição, Ruben, Pimenta, Mário, and de Souza, Vitor
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: In this paper we analyze the energy evolution of the muon content of air showers between $10^{18.4}$ and $10^{19.6}$ eV to be able to determine the most likely mass composition scenario from future number of muons measurements. The energy and primary mass evolution of the number of muons is studied based on the Heitler-Matthews model and Monte Carlo simulation of the air shower. A simple model to describe the evolution of the first and second moments of number of muons distributions is proposed and validated. An analysis approach based on the comparison between this model's predictions and data to discriminate among a set of composition scenarios is presented and tested with simulations. It is shown that the composition scenarios can be potentially discriminated under the conditions imposed by the method. The discrimination power of the proposed analysis is stable under systematic changes of the absolute number of muons from model predictions and on the scale of the reconstructed energy.
Published: 2016
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27. Measurement of the Radiation Energy in the Radio Signal of Extensive Air Showers as a Universal Estimator of Cosmic-Ray Energy

Author: The Pierre Auger Collaboration, Aab, Alexander, Abreu, Pedro, Aglietta, Marco, Ahn, Eun-Joo, Samarai, Imen Al, Albuquerque, Ivone, Allekotte, Ingomar, Allison, Patrick, Almela, Alejandro, Castillo, Jesus Alvarez, Alvarez-Muñiz, Jaime, Batista, Rafael Alves, Ambrosio, Michelangelo, Aminaei, Amin, Anastasi, Gioacchino Alex, Anchordoqui, Luis, Andringa, Sofia, Aramo, Carla, Arqueros, Fernando, Arsene, Nicusor, Asorey, Hernán Gonzalo, Assis, Pedro, Aublin, Julien, Avila, Gualberto, Awal, Nafiun, Badescu, Alina Mihaela, Baus, Colin, Beatty, Jim, Becker, Karl Heinz, Bellido, Jose A., Berat, Corinne, Bertaina, Mario Edoardo, Bertou, Xavier, Biermann, Peter, Billoir, Pierre, Blaess, Simon G., Blanco, Alberto, Blanco, Miguel, Blazek, Jiri, Bleve, Carla, Blümer, Hans, Boháčová, Martina, Boncioli, Denise, Bonifazi, Carla, Borodai, Nataliia, Brack, Jeffrey, Brancus, Iliana, Bretz, Thomas, Bridgeman, Ariel, Brogueira, Pedro, Buchholz, Peter, Bueno, Antonio, Buitink, Stijn, Buscemi, Mario, Caballero-Mora, Karen S., Caccianiga, Barbara, Caccianiga, Lorenzo, Candusso, Marina, Caramete, Laurentiu, Caruso, Rossella, Castellina, Antonella, Cataldi, Gabriella, Cazon, Lorenzo, Cester, Rosanna, Chavez, Alan G., Chiavassa, Andrea, Chinellato, Jose Augusto, Chudoba, Jiri, Cilmo, Marco, Clay, Roger W, Cocciolo, Giuseppe, Colalillo, Roberta, Coleman, Alan, Collica, Laura, Coluccia, Maria Rita, Conceição, Ruben, Contreras, Fernando, Cooper, Mathew J., Cordier, Alain, Coutu, Stephane, Covault, Corbin, Cronin, James, Dallier, Richard, Daniel, Bruno, Dasso, Sergio, Daumiller, Kai, Dawson, Bruce R., de Almeida, Rogerio M., de Jong, Sijbrand J., De Mauro, Giuseppe, Neto, Joao de Mello, De Mitri, Ivan, de Oliveira, Jaime, de Souza, Vitor, del Peral, Luis, Deligny, Olivier, Dhital, Niraj, Di Giulio, Claudio, Di Matteo, Armando, Diaz, Johana Chirinos, Castro, Mary Lucia Díaz, Diogo, Francisco, Dobrigkeit, Carola, Docters, Wendy, D'Olivo, Juan Carlos, Dorofeev, Alexei, Hasankiadeh, Qader Dorosti, Anjos, Rita dos, Dova, Maria Teresa, Ebr, Jan, Engel, Ralph, Erdmann, Martin, Erfani, Mona, Escobar, Carlos O., Espadanal, Joao, Etchegoyen, Alberto, Falcke, Heino, Fang, Ke, Farrar, Glennys, Fauth, Anderson, Fazzini, Norberto, Ferguson, Andrew P., Fick, Brian, Figueira, Juan Manuel, Filevich, Alberto, Filipčič, Andrej, Fratu, Octavian, Freire, Martín Miguel, Fujii, Toshihiro, García, Beatriz, Garcia-Gamez, Diego, Garcia-Pinto, Diego, Gate, Florian, Gemmeke, Hartmut, Gherghel-Lascu, Alexandru, Ghia, Piera Luisa, Giaccari, Ugo, Giammarchi, Marco, Giller, Maria, Głas, Dariusz, Glaser, Christian, Glass, Henry, Golup, Geraldina, Berisso, Mariano Gómez, Vitale, Primo F. Gómez, González, Nicolás, Gookin, Ben, Gordon, Jacob, Gorgi, Alessio, Gorham, Peter, Gouffon, Philippe, Griffith, Nathan, Grillo, Aurelio, Grubb, Trent D., Guarino, Fausto, Guedes, Germano, Hampel, Matías Rolf, Hansen, Patricia, Harari, Diego, Harrison, Thomas A., Hartmann, Sebastian, Harton, John, Haungs, Andreas, Hebbeker, Thomas, Heck, Dieter, Heimann, Philipp, Herve, Alexander E., Hill, Gary C., Hojvat, Carlos, Hollon, Nicholas, Holt, Ewa, Homola, Piotr, Hörandel, Jörg, Horvath, Pavel, Hrabovský, Miroslav, Huber, Daniel, Huege, Tim, Insolia, Antonio, Isar, Paula Gina, Jandt, Ingolf, Jansen, Stefan, Jarne, Cecilia, Johnsen, Jeffrey A., Josebachuili, Mariela, Kääpä, Alex, Kambeitz, Olga, Kampert, Karl Heinz, Kasper, Peter, Katkov, Igor, Keilhauer, Bianca, Kemp, Ernesto, Kieckhafer, Roger, Klages, Hans, Kleifges, Matthias, Kleinfeller, Jonny, Krause, Raphael, Krohm, Nicole, Kuempel, Daniel, Mezek, Gasper Kukec, Kunka, Norbert, Awad, Alaa Metwaly Kuotb, LaHurd, Danielle, Latronico, Luca, Lauer, Robert, Lauscher, Markus, Lautridou, Pascal, Coz, Sandra Le, Lebrun, Didier, Lebrun, Paul, de Oliveira, Marcelo Augusto Leigui, Letessier-Selvon, Antoine, Lhenry-Yvon, Isabelle, Link, Katrin, Lopes, Luis, López, Rebeca, Casado, Aida López, Louedec, Karim, Lucero, Agustin, Malacari, Max, Mallamaci, Manuela, Maller, Jennifer, Mandat, Dusan, Mantsch, Paul, Mariazzi, Analisa, Marin, Vincent, Mariş, Ioana, Marsella, Giovanni, Martello, Daniele, Martinez, Humberto, Bravo, Oscar Martínez, Martraire, Diane, Meza, Jimmy Masías, Mathes, Hermann-Josef, Mathys, Sebastian, Matthews, James, Matthews, John, Matthiae, Giorgio, Maurizio, Daniela, Mayotte, Eric, Mazur, Peter, Medina, Carlos, Medina-Tanco, Gustavo, Meissner, Rebecca, Mello, Victor, Melo, Diego, Menshikov, Alexander, Messina, Stefano, Micheletti, Maria Isabel, Middendorf, Lukas, Minaya, Ignacio A., Miramonti, Lino, Mitrica, Bogdan, Molina-Bueno, Laura, Mollerach, Silvia, Montanet, François, Morello, Carlo, Mostafá, Miguel, Moura, Celio A., Muller, Marcio Aparecido, Müller, Gero, Müller, Sarah, Navas, Sergio, Necesal, Petr, Nellen, Lukas, Nelles, Anna, Neuser, Jens, Nguyen, Phong H., Niculescu-Oglinzanu, Mihai, Niechciol, Marcus, Niemietz, Lukas, Niggemann, Tim, Nitz, Dave, Nosek, Dalibor, Novotny, Vladimir, Nožka, Lyberis, Núñez, Luis, Ochilo, Livingstone, Oikonomou, Foteini, Olinto, Angela, Pacheco, Noelia, Selmi-Dei, Daniel Pakk, Palatka, Miroslav, Pallotta, Juan, Papenbreer, Philipp, Parente, Gonzalo, Parra, Alejandra, Paul, Thomas, Pech, Miroslav, Pękala, Jan, Pelayo, Rodrigo, Pepe, Iuri, Perrone, Lorenzo, Petermann, Emily, Peters, Christine, Petrera, Sergio, Petrov, Yevgeniy, Phuntsok, Jamyang, Piegaia, Ricardo, Pierog, Tanguy, Pieroni, Pablo, Pimenta, Mário, Pirronello, Valerio, Platino, Manuel, Plum, Matthias, Porcelli, Alessio, Porowski, Czeslaw, Prado, Raul Ribeiro, Privitera, Paolo, Prouza, Michael, Quel, Eduardo J, Querchfeld, Sven, Quinn, Sean, Rautenberg, Julian, Ravel, Olivier, Ravignani, Diego, Reinert, Darius, Revenu, Benoît, Ridky, Jan, Risse, Markus, Ristori, Pablo, Rizi, Vincenzo, de Carvalho, Washington Rodrigues, Rojo, Jorge Rubén Rodriguez, Rodríguez-Frías, Maria Dolores, Rogozin, Dmytro, Rosado, Jaime, Roth, Markus, Roulet, Esteban, Rovero, Adrian, Saffi, Steven J., Saftoiu, Alexandra, Salazar, Humberto, Saleh, Ahmed, Greus, Francisco Salesa, Salina, Gaetano, Gomez, Jose Sanabria, Sánchez, Federico, Sanchez-Lucas, Patricia, Santos, Edivaldo Moura, Santos, Eva, Sarazin, Fred, Sarkar, Biswaijt, Sarmento, Raul, Sarmiento-Cano, Christian, Sato, Ricardo, Scarso, Carlos, Schauer, Markus, Scherini, Viviana, Schieler, Harald, Schmidt, David, Scholten, Olaf, Schoorlemmer, Harm, Schovánek, Petr, Schröder, Frank G., Schulz, Alexander, Schulz, Johannes, Schumacher, Johannes, Sciutto, Sergio, Segreto, Alberto, Settimo, Mariangela, Shadkam, Amir, Shellard, Ronald C., Sigl, Guenter, Sima, Octavian, Śmiałkowski, Andrzej, Šmída, Radomir, Snow, Gregory, Sommers, Paul, Sonntag, Sebastian, Sorokin, J., Squartini, Ruben, Srivastava, Yogendra N., Stanca, Denis, Stanič, Samo, Stapleton, James, Stasielak, Jaroslaw, Stephan, Maurice, Stutz, Anne, Suarez, Federico, Durán, Mauricio Suarez, Suomijärvi, Tiina, Supanitsky, A. Daniel, Sutherland, Michael, Swain, John, Szadkowski, Zbigniew, Taborda, Oscar Alejandro, Tapia, Alex, Tepe, Andreas, Theodoro, Vanessa Menezes, Timmermans, Charles, Peixoto, Carlos J. Todero, Toma, Gabriel, Tomankova, Lenka, Tomé, Bernardo, Tonachini, Aurelio, Elipe, Guillermo Torralba, Machado, Diego Torres, Travnicek, Petr, Trini, Marta, Ulrich, Ralf, Unger, Michael, Urban, Martin, Galicia, Jose F. Valdés, Valiño, Ines, Valore, Laura, van Aar, Guus, van Bodegom, Patrick, Berg, Ad M. van den, van Velzen, Sjoert, van Vliet, Arjen, Varela, Enrique, Cárdenas, Bernardo Vargas, Varner, Gary, Vasquez, Rafael, Vázquez, Jose R., Vázquez, Ricardo, Veberič, Darko, Verzi, Valerio, Vicha, Jakub, Videla, Mariela, Villaseñor, Luis, Vlcek, Brian, Vorobiov, Serguei, Wahlberg, Hernan, Wainberg, Oscar, Walz, David, Watson, Alan, Weber, Marc, Weidenhaupt, Klaus, Weindl, Andreas, Welling, Christoph, Werner, Felix, Widom, Allan, Wiencke, Lawrence, Wilczyński, Henryk, Winchen, Tobias, Wittkowski, David, Wundheiler, Brian, Wykes, Sarka, Yang, Lili, Yapici, Tolga, Yushkov, Alexey, Zas, Enrique, Zavrtanik, Danilo, Zavrtanik, Marko, Zepeda, Arnulfo, Zimmermann, Benedikt, Ziolkowski, Michael, and Zuccarello, Francesca
Subjects: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment
Abstract: We measure the energy emitted by extensive air showers in the form of radio emission in the frequency range from 30 to 80 MHz. Exploiting the accurate energy scale of the Pierre Auger Observatory, we obtain a radiation energy of 15.8 \pm 0.7 (stat) \pm 6.7 (sys) MeV for cosmic rays with an energy of 1 EeV arriving perpendicularly to a geomagnetic field of 0.24 G, scaling quadratically with the cosmic-ray energy. A comparison with predictions from state-of-the-art first-principle calculations shows agreement with our measurement. The radiation energy provides direct access to the calorimetric energy in the electromagnetic cascade of extensive air showers. Comparison with our result thus allows the direct calibration of any cosmic-ray radio detector against the well-established energy scale of the Pierre Auger Observatory., Comment: Replaced with published version. Added journal reference and DOI. Supplemental material in the ancillary files
Published: 2016
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28. High-energy interactions at the Pierre Auger Observatory

Author: Conceição, Ruben
Subjects: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment
Abstract: The interaction of Ultra High Energy Cosmic Rays (UHECRs) with the atoms of the atmosphere can occur at center-of-mass energies that surpass 100 TeV, while present human-made accelerators go up to 13 TeV. Therefore it provides a unique opportunity to explore hadronic interactions at the highest energies. However, the extraction of hadronic interaction properties from the Extensive Air Showers (EAS) characteristics, which are induced by the UHECR, is intrinsically related to the nature of the primary cosmic ray. As such, to break the degeneracy between hadronic interactions and primary mass composition, a consistent description of the shower observables must be achieved. Such detailed studies have been conducted in the last years at the Pierre Auger Observatory, the largest UHECRs detector in the world. It combines two complementary techniques to measure the EAS characteristics. In this talk, we will present the latest measurements on shower observables, both on the electromagnetic and muonic shower components, and its interpretation in terms of the primary mass composition. Its impact regarding particle physics will be discussed, in particular the measurement of the proton-air cross section. Finally, through the joint analysis of the different measurements, it will be shown that none of the post-LHC high-energy hadronic interaction models can satisfactorily describe the data., Comment: Proceedings of the EPS-HEP 2015
Published: 2015

29. Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory

Author: The Pierre Auger Collaboration, Aab, Alexander, Abreu, Pedro, Aglietta, Marco, Ahn, Eun-Joo, Samarai, Imen Al, Albuquerque, Ivone, Allekotte, Ingomar, Allison, Patrick, Almela, Alejandro, Castillo, Jesus Alvarez, Alvarez-Muñiz, Jaime, Batista, Rafael Alves, Ambrosio, Michelangelo, Aminaei, Amin, Anastasi, Gioacchino Alex, Anchordoqui, Luis, Andringa, Sofia, Aramo, Carla, Arqueros, Fernando, Arsene, Nicusor, Asorey, Hernán Gonzalo, Assis, Pedro, Aublin, Julien, Avila, Gualberto, Awal, Nafiun, Badescu, Alina Mihaela, Baus, Colin, Beatty, Jim, Becker, Karl Heinz, Bellido, Jose A., Berat, Corinne, Bertaina, Mario Edoardo, Bertou, Xavier, Biermann, Peter, Billoir, Pierre, Blaess, Simon G., Blanco, Alberto, Blanco, Miguel, Blazek, Jiri, Bleve, Carla, Blümer, Hans, Boháčová, Martina, Boncioli, Denise, Bonifazi, Carla, Borodai, Nataliia, Brack, Jeffrey, Brancus, Iliana, Bretz, Thomas, Bridgeman, Ariel, Brogueira, Pedro, Buchholz, Peter, Bueno, Antonio, Buitink, Stijn, Buscemi, Mario, Caballero-Mora, Karen S., Caccianiga, Barbara, Caccianiga, Lorenzo, Candusso, Marina, Caramete, Laurentiu, Caruso, Rossella, Castellina, Antonella, Cataldi, Gabriella, Cazon, Lorenzo, Cester, Rosanna, Chavez, Alan G., Chiavassa, Andrea, Chinellato, Jose Augusto, Chudoba, Jiri, Cilmo, Marco, Clay, Roger W, Cocciolo, Giuseppe, Colalillo, Roberta, Coleman, Alan, Collica, Laura, Coluccia, Maria Rita, Conceição, Ruben, Contreras, Fernando, Cooper, Mathew J., Cordier, Alain, Coutu, Stephane, Covault, Corbin, Cronin, James, Dallier, Richard, Daniel, Bruno, Dasso, Sergio, Daumiller, Kai, Dawson, Bruce R., de Almeida, Rogerio M., de Jong, Sijbrand J., De Mauro, Giuseppe, Neto, Joao de Mello, De Mitri, Ivan, de Oliveira, Jaime, de Souza, Vitor, del Peral, Luis, Deligny, Olivier, Dhital, Niraj, Di Giulio, Claudio, Di Matteo, Armando, Diaz, Johana Chirinos, Castro, Mary Lucia Díaz, Diogo, Francisco, Dobrigkeit, Carola, Docters, Wendy, D'Olivo, Juan Carlos, Dorofeev, Alexei, Hasankiadeh, Qader Dorosti, Anjos, Rita dos, Dova, Maria Teresa, Ebr, Jan, Engel, Ralph, Erdmann, Martin, Erfani, Mona, Escobar, Carlos O., Espadanal, Joao, Etchegoyen, Alberto, Falcke, Heino, Fang, Ke, Farrar, Glennys, Fauth, Anderson, Fazzini, Norberto, Ferguson, Andrew P., Fick, Brian, Figueira, Juan Manuel, Filevich, Alberto, Filipčič, Andrej, Fratu, Octavian, Freire, Martín Miguel, Fujii, Toshihiro, García, Beatriz, Garcia-Gamez, Diego, Garcia-Pinto, Diego, Gate, Florian, Gemmeke, Hartmut, Gherghel-Lascu, Alexandru, Ghia, Piera Luisa, Giaccari, Ugo, Giammarchi, Marco, Giller, Maria, Głas, Dariusz, Glaser, Christian, Glass, Henry, Golup, Geraldina, Berisso, Mariano Gómez, Vitale, Primo F. Gómez, González, Nicolás, Gookin, Ben, Gordon, Jacob, Gorgi, Alessio, Gorham, Peter, Gouffon, Philippe, Griffith, Nathan, Grillo, Aurelio, Grubb, Trent D., Guarino, Fausto, Guedes, Germano, Hampel, Matías Rolf, Hansen, Patricia, Harari, Diego, Harrison, Thomas A., Hartmann, Sebastian, Harton, John, Haungs, Andreas, Hebbeker, Thomas, Heck, Dieter, Heimann, Philipp, Herve, Alexander E., Hill, Gary C., Hojvat, Carlos, Hollon, Nicholas, Holt, Ewa, Homola, Piotr, Hörandel, Jörg, Horvath, Pavel, Hrabovský, Miroslav, Huber, Daniel, Huege, Tim, Insolia, Antonio, Isar, Paula Gina, Jandt, Ingolf, Jansen, Stefan, Jarne, Cecilia, Johnsen, Jeffrey A., Josebachuili, Mariela, Kääpä, Alex, Kambeitz, Olga, Kampert, Karl Heinz, Kasper, Peter, Katkov, Igor, Keilhauer, Bianca, Kemp, Ernesto, Kieckhafer, Roger, Klages, Hans, Kleifges, Matthias, Kleinfeller, Jonny, Krause, Raphael, Krohm, Nicole, Kuempel, Daniel, Mezek, Gasper Kukec, Kunka, Norbert, Awad, Alaa Metwaly Kuotb, LaHurd, Danielle, Latronico, Luca, Lauer, Robert, Lauscher, Markus, Lautridou, Pascal, Coz, Sandra Le, Lebrun, Didier, Lebrun, Paul, de Oliveira, Marcelo Augusto Leigui, Letessier-Selvon, Antoine, Lhenry-Yvon, Isabelle, Link, Katrin, Lopes, Luis, López, Rebeca, Casado, Aida López, Louedec, Karim, Lucero, Agustin, Malacari, Max, Mallamaci, Manuela, Maller, Jennifer, Mandat, Dusan, Mantsch, Paul, Mariazzi, Analisa, Marin, Vincent, Mariş, Ioana, Marsella, Giovanni, Martello, Daniele, Martinez, Humberto, Bravo, Oscar Martínez, Martraire, Diane, Meza, Jimmy Masías, Mathes, Hermann-Josef, Mathys, Sebastian, Matthews, James, Matthews, John, Matthiae, Giorgio, Maurizio, Daniela, Mayotte, Eric, Mazur, Peter, Medina, Carlos, Medina-Tanco, Gustavo, Meissner, Rebecca, Mello, Victor, Melo, Diego, Menshikov, Alexander, Messina, Stefano, Micheletti, Maria Isabel, Middendorf, Lukas, Minaya, Ignacio A., Miramonti, Lino, Mitrica, Bogdan, Molina-Bueno, Laura, Mollerach, Silvia, Montanet, François, Morello, Carlo, Mostafá, Miguel, Moura, Celio A., Muller, Marcio Aparecido, Müller, Gero, Müller, Sarah, Navas, Sergio, Necesal, Petr, Nellen, Lukas, Nelles, Anna, Neuser, Jens, Nguyen, Phong H., Niculescu-Oglinzanu, Mihai, Niechciol, Marcus, Niemietz, Lukas, Niggemann, Tim, Nitz, Dave, Nosek, Dalibor, Novotny, Vladimir, Nožka, Lyberis, Núñez, Luis, Ochilo, Livingstone, Oikonomou, Foteini, Olinto, Angela, Pacheco, Noelia, Selmi-Dei, Daniel Pakk, Palatka, Miroslav, Pallotta, Juan, Papenbreer, Philipp, Parente, Gonzalo, Parra, Alejandra, Paul, Thomas, Pech, Miroslav, Pękala, Jan, Pelayo, Rodrigo, Pepe, Iuri, Perrone, Lorenzo, Petermann, Emily, Peters, Christine, Petrera, Sergio, Petrov, Yevgeniy, Phuntsok, Jamyang, Piegaia, Ricardo, Pierog, Tanguy, Pieroni, Pablo, Pimenta, Mário, Pirronello, Valerio, Platino, Manuel, Plum, Matthias, Porcelli, Alessio, Porowski, Czeslaw, Prado, Raul Ribeiro, Privitera, Paolo, Prouza, Michael, Quel, Eduardo J, Querchfeld, Sven, Quinn, Sean, Rautenberg, Julian, Ravel, Olivier, Ravignani, Diego, Reinert, Darius, Revenu, Benoît, Ridky, Jan, Risse, Markus, Ristori, Pablo, Rizi, Vincenzo, de Carvalho, Washington Rodrigues, Rojo, Jorge Rubén Rodriguez, Rodríguez-Frías, Maria Dolores, Rogozin, Dmytro, Rosado, Jaime, Roth, Markus, Roulet, Esteban, Rovero, Adrian, Saffi, Steven J., Saftoiu, Alexandra, Salazar, Humberto, Saleh, Ahmed, Greus, Francisco Salesa, Salina, Gaetano, Gomez, Jose Sanabria, Sánchez, Federico, Sanchez-Lucas, Patricia, Santos, Edivaldo Moura, Santos, Eva, Sarazin, Fred, Sarkar, Biswaijt, Sarmento, Raul, Sarmiento-Cano, Christian, Sato, Ricardo, Scarso, Carlos, Schauer, Markus, Scherini, Viviana, Schieler, Harald, Schmidt, David, Scholten, Olaf, Schoorlemmer, Harm, Schovánek, Petr, Schröder, Frank G., Schulz, Alexander, Schulz, Johannes, Schumacher, Johannes, Sciutto, Sergio, Segreto, Alberto, Settimo, Mariangela, Shadkam, Amir, Shellard, Ronald C., Sigl, Guenter, Sima, Octavian, Śmiałkowski, Andrzej, Šmída, Radomir, Snow, Gregory, Sommers, Paul, Sonntag, Sebastian, Sorokin, J., Squartini, Ruben, Srivastava, Yogendra N., Stanca, Denis, Stanič, Samo, Stapleton, James, Stasielak, Jaroslaw, Stephan, Maurice, Stutz, Anne, Suarez, Federico, Durán, Mauricio Suarez, Suomijärvi, Tiina, Supanitsky, A. Daniel, Sutherland, Michael, Swain, John, Szadkowski, Zbigniew, Taborda, Oscar Alejandro, Tapia, Alex, Tepe, Andreas, Theodoro, Vanessa Menezes, Tibolla, Omar, Timmermans, Charles, Peixoto, Carlos J. Todero, Toma, Gabriel, Tomankova, Lenka, Tomé, Bernardo, Tonachini, Aurelio, Elipe, Guillermo Torralba, Machado, Diego Torres, Travnicek, Petr, Trini, Marta, Ulrich, Ralf, Unger, Michael, Urban, Martin, Galicia, Jose F. Valdés, Valiño, Ines, Valore, Laura, van Aar, Guus, van Bodegom, Patrick, Berg, Ad M. van den, van Velzen, Sjoert, van Vliet, Arjen, Varela, Enrique, Cárdenas, Bernardo Vargas, Varner, Gary, Vasquez, Rafael, Vázquez, Jose R., Vázquez, Ricardo, Veberič, Darko, Verzi, Valerio, Vicha, Jakub, Videla, Mariela, Villaseñor, Luis, Vlcek, Brian, Vorobiov, Serguei, Wahlberg, Hernan, Wainberg, Oscar, Walz, David, Watson, Alan, Weber, Marc, Weidenhaupt, Klaus, Weindl, Andreas, Welling, Christoph, Werner, Felix, Widom, Allan, Wiencke, Lawrence, Wilczyński, Henryk, Winchen, Tobias, Wittkowski, David, Wundheiler, Brian, Wykes, Sarka, Yang, Lili, Yapici, Tolga, Yushkov, Alexey, Zas, Enrique, Zavrtanik, Danilo, Zavrtanik, Marko, Zepeda, Arnulfo, Zimmermann, Benedikt, Ziolkowski, Michael, and Zuccarello, Francesca
Subjects: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The Auger Engineering Radio Array (AERA) is part of the Pierre Auger Observatory and is used to detect the radio emission of cosmic-ray air showers. These observations are compared to the data of the surface detector stations of the Observatory, which provide well-calibrated information on the cosmic-ray energies and arrival directions. The response of the radio stations in the 30 to 80 MHz regime has been thoroughly calibrated to enable the reconstruction of the incoming electric field. For the latter, the energy deposit per area is determined from the radio pulses at each observer position and is interpolated using a two-dimensional function that takes into account signal asymmetries due to interference between the geomagnetic and charge-excess emission components. The spatial integral over the signal distribution gives a direct measurement of the energy transferred from the primary cosmic ray into radio emission in the AERA frequency range. We measure 15.8 MeV of radiation energy for a 1 EeV air shower arriving perpendicularly to the geomagnetic field. This radiation energy -- corrected for geometrical effects -- is used as a cosmic-ray energy estimator. Performing an absolute energy calibration against the surface-detector information, we observe that this radio-energy estimator scales quadratically with the cosmic-ray energy as expected for coherent emission. We find an energy resolution of the radio reconstruction of 22% for the data set and 17% for a high-quality subset containing only events with at least five radio stations with signal., Comment: Replaced with published version. Added journal reference and DOI
Published: 2015
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30. An improved limit to the diffuse flux of ultra-high energy neutrinos from the Pierre Auger Observatory

Author: The Pierre Auger Collaboration, Aab, Alexander, Abreu, Pedro, Aglietta, Marco, Ahn, Eun-Joo, Samarai, Imen Al, Albuquerque, Ivone, Allekotte, Ingomar, Allison, Patrick, Almela, Alejandro, Castillo, Jesus Alvarez, Alvarez-Muñiz, Jaime, Batista, Rafael Alves, Ambrosio, Michelangelo, Aminaei, Amin, Anchordoqui, Luis, Andringa, Sofia, Aramo, Carla, Aranda, Victor Manuel, Arqueros, Fernando, Arsene, Nicusor, Asorey, Hernán Gonzalo, Assis, Pedro, Aublin, Julien, Ave, Maximo, Avenier, Michel, Avila, Gualberto, Awal, Nafiun, Badescu, Alina Mihaela, Barber, Kerri B, Bäuml, Julia, Baus, Colin, Beatty, Jim, Becker, Karl Heinz, Bellido, Jose A, Berat, Corinne, Bertaina, Mario Edoardo, Bertou, Xavier, Biermann, Peter, Billoir, Pierre, Blaess, Simon G, Blanco, Alberto, Blanco, Miguel, Bleve, Carla, Blümer, Hans, Boháčová, Martina, Boncioli, Denise, Bonifazi, Carla, Borodai, Nataliia, Brack, Jeffrey, Brancus, Iliana, Bridgeman, Ariel, Brogueira, Pedro, Brown, William C, Buchholz, Peter, Bueno, Antonio, Buitink, Stijn, Buscemi, Mario, Caballero-Mora, Karen S, Caccianiga, Barbara, Caccianiga, Lorenzo, Candusso, Marina, Caramete, Laurentiu, Caruso, Rossella, Castellina, Antonella, Cataldi, Gabriella, Cazon, Lorenzo, Cester, Rosanna, Chavez, Alan G, Chiavassa, Andrea, Chinellato, Jose Augusto, Chudoba, Jiri, Cilmo, Marco, Clay, Roger W, Cocciolo, Giuseppe, Colalillo, Roberta, Coleman, Alan, Collica, Laura, Coluccia, Maria Rita, Conceição, Ruben, Contreras, Fernando, Cooper, Mathew J, Cordier, Alain, Coutu, Stephane, Covault, Corbin, Cronin, James, Dallier, Richard, Daniel, Bruno, Dasso, Sergio, Daumiller, Kai, Dawson, Bruce R, de Almeida, Rogerio M, de Jong, Sijbrand J, De Mauro, Giuseppe, Neto, Joao de Mello, De Mitri, Ivan, de Oliveira, Jaime, de Souza, Vitor, del Peral, Luis, Deligny, Olivier, Dembinski, Hans, Dhital, Niraj, Di Giulio, Claudio, Di Matteo, Armando, Diaz, Johana Chirinos, Castro, Mary Lucia Díaz, Diogo, Francisco, Dobrigkeit, Carola, Docters, Wendy, D'Olivo, Juan Carlos, Dorofeev, Alexei, Hasankiadeh, Qader Dorosti, Dova, Maria Teresa, Ebr, Jan, Engel, Ralph, Erdmann, Martin, Erfani, Mona, Escobar, Carlos O, Espadanal, Joao, Etchegoyen, Alberto, Falcke, Heino, Fang, Ke, Farrar, Glennys, Fauth, Anderson, Fazzini, Norberto, Ferguson, Andrew P, Fernandes, Mateus, Fick, Brian, Figueira, Juan Manuel, Filevich, Alberto, Filipčič, Andrej, Fox, Brendan, Fratu, Octavian, Freire, Martín Miguel, Fuchs, Benjamin, Fujii, Toshihiro, García, Beatriz, Garcia-Pinto, Diego, Gate, Florian, Gemmeke, Hartmut, Gherghel-Lascu, Alexandru, Ghia, Piera Luisa, Giaccari, Ugo, Giammarchi, Marco, Giller, Maria, Głas, Dariusz, Glaser, Christian, Glass, Henry, Golup, Geraldina, Berisso, Mariano Gómez, Vitale, Primo F Gómez, González, Nicolás, Gookin, Ben, Gordon, Jacob, Gorgi, Alessio, Gorham, Peter, Gouffon, Philippe, Griffith, Nathan, Grillo, Aurelio, Grubb, Trent D, Guardincerri, Yann, Guarino, Fausto, Guedes, Germano, Hampel, Matías Rolf, Hansen, Patricia, Harari, Diego, Harrison, Thomas A, Hartmann, Sebastian, Harton, John, Haungs, Andreas, Hebbeker, Thomas, Heck, Dieter, Heimann, Philipp, Herve, Alexander E, Hill, Gary C, Hojvat, Carlos, Hollon, Nicholas, Holt, Ewa, Homola, Piotr, Hörandel, Jörg, Horvath, Pavel, Hrabovský, Miroslav, Huber, Daniel, Huege, Tim, Insolia, Antonio, Isar, Paula Gina, Jandt, Ingolf, Jansen, Stefan, Jarne, Cecilia, Johnsen, Jeffrey A, Josebachuili, Mariela, Kääpä, Alex, Kambeitz, Olga, Kampert, Karl Heinz, Kasper, Peter, Katkov, Igor, Kégl, Balazs, Keilhauer, Bianca, Keivani, Azadeh, Kemp, Ernesto, Kieckhafer, Roger, Klages, Hans, Kleifges, Matthias, Kleinfeller, Jonny, Krause, Raphael, Krohm, Nicole, Krömer, Oliver, Kuempel, Daniel, Kunka, Norbert, LaHurd, Danielle, Latronico, Luca, Lauer, Robert, Lauscher, Markus, Lautridou, Pascal, Coz, Sandra Le, Lebrun, Didier, Lebrun, Paul, de Oliveira, Marcelo Augusto Leigui, Letessier-Selvon, Antoine, Lhenry-Yvon, Isabelle, Link, Katrin, Lopes, Luis, López, Rebeca, Casado, Aida López, Louedec, Karim, Lu, Lu, Lucero, Agustin, Malacari, Max, Maldera, Simone, Mallamaci, Manuela, Maller, Jennifer, Mandat, Dusan, Mantsch, Paul, Mariazzi, Analisa, Marin, Vincent, Mariş, Ioana, Marsella, Giovanni, Martello, Daniele, Martin, Lilian, Martinez, Humberto, Bravo, Oscar Martínez, Martraire, Diane, Meza, Jimmy Masías, Mathes, Hermann-Josef, Mathys, Sebastian, Matthews, James, Matthews, John, Matthiae, Giorgio, Maurel, Detlef, Maurizio, Daniela, Mayotte, Eric, Mazur, Peter, Medina, Carlos, Medina-Tanco, Gustavo, Meissner, Rebecca, Mello, Victor, Melo, Diego, Menshikov, Alexander, Messina, Stefano, Meyhandan, Rishi, Micheletti, Maria Isabel, Middendorf, Lukas, Minaya, Ignacio A, Miramonti, Lino, Mitrica, Bogdan, Molina-Bueno, Laura, Mollerach, Silvia, Montanet, François, Morello, Carlo, Mostafá, Miguel, Moura, Celio A, Muller, Marcio Aparecido, Müller, Gero, Müller, Sarah, Mussa, Roberto, Navarra, Gianni, Navarro, Jose Luis, Navas, Sergio, Necesal, Petr, Nellen, Lukas, Nelles, Anna, Neuser, Jens, Nguyen, Phong H, Niculescu-Oglinzanu, Mihai, Niechciol, Marcus, Niemietz, Lukas, Niggemann, Tim, Nitz, Dave, Nosek, Dalibor, Novotny, Vladimir, Nožka, Lyberis, Ochilo, Livingstone, Oikonomou, Foteini, Olinto, Angela, Pacheco, Noelia, Selmi-Dei, Daniel Pakk, Palatka, Miroslav, Pallotta, Juan, Papenbreer, Philipp, Parente, Gonzalo, Parra, Alejandra, Paul, Thomas, Pech, Miroslav, Pękala, Jan, Pelayo, Rodrigo, Pepe, Iuri, Perrone, Lorenzo, Petermann, Emily, Peters, Christine, Petrera, Sergio, Petrov, Yevgeniy, Phuntsok, Jamyang, Piegaia, Ricardo, Pierog, Tanguy, Pieroni, Pablo, Pimenta, Mário, Pirronello, Valerio, Platino, Manuel, Plum, Matthias, Porcelli, Alessio, Porowski, Czeslaw, Prado, Raul Ribeiro, Privitera, Paolo, Prouza, Michael, Purrello, Victor, Quel, Eduardo J, Querchfeld, Sven, Quinn, Sean, Rautenberg, Julian, Ravel, Olivier, Ravignani, Diego, Revenu, Benoît, Ridky, Jan, Riggi, Simone, Risse, Markus, Ristori, Pablo, Rizi, Vincenzo, de Carvalho, Washington Rodrigues, Fernandez, Gonzalo Rodriguez, Rojo, Jorge Rubén Rodriguez, Rodríguez-Frías, Maria Dolores, Rogozin, Dmytro, Rosado, Jaime, Roth, Markus, Roulet, Esteban, Rovero, Adrian, Saffi, Steven J, Saftoiu, Alexandra, Salamida, Francesco, Salazar, Humberto, Saleh, Ahmed, Greus, Francisco Salesa, Salina, Gaetano, Sánchez, Federico, Sanchez-Lucas, Patricia, Santos, Edivaldo Moura, Santos, Eva, Sarazin, Fred, Sarkar, Biswaijt, Sarmento, Raul, Sato, Ricardo, Scarso, Carlos, Schauer, Markus, Scherini, Viviana, Schieler, Harald, Schiffer, Peter, Schmidt, David, Scholten, Olaf, Schoorlemmer, Harm, Schovánek, Petr, Schröder, Frank G, Schulz, Alexander, Schulz, Johannes, Schumacher, Johannes, Sciutto, Sergio, Segreto, Alberto, Settimo, Mariangela, Shadkam, Amir, Shellard, Ronald C, Sidelnik, Iván, Sigl, Guenter, Sima, Octavian, Śmiałkowski, Andrzej, Šmída, Radomir, Snow, Gregory, Sommers, Paul, Sorokin, J, Squartini, Ruben, Srivastava, Yogendra N, Stanca, Denis, Stanič, Samo, Stapleton, James, Stasielak, Jaroslaw, Stephan, Maurice, Stutz, Anne, Suarez, Federico, Suomijärvi, Tiina, Supanitsky, A Daniel, Sutherland, Michael, Swain, John, Szadkowski, Zbigniew, Taborda, Oscar Alejandro, Tapia, Alex, Tepe, Andreas, Theodoro, Vanessa Menezes, Tiffenberg, Javier, Timmermans, Charles, Peixoto, Carlos J Todero, Toma, Gabriel, Tomankova, Lenka, Tomé, Bernardo, Tonachini, Aurelio, Elipe, Guillermo Torralba, Machado, Diego Torres, Travnicek, Petr, Ulrich, Ralf, Unger, Michael, Urban, Martin, Galicia, Jose F Valdés, Valiño, Ines, Valore, Laura, van Aar, Guus, van Bodegom, Patrick, Berg, Ad M van den, van Velzen, Sjoert, van Vliet, Arjen, Varela, Enrique, Cárdenas, Bernardo Vargas, Varner, Gary, Vasquez, Rafael, Vázquez, Jose R, Vázquez, Ricardo, Veberič, Darko, Verzi, Valerio, Vicha, Jakub, Videla, Mariela, Villaseñor, Luis, Vlcek, Brian, Vorobiov, Serguei, Wahlberg, Hernan, Wainberg, Oscar, Walz, David, Watson, Alan, Weber, Marc, Weidenhaupt, Klaus, Weindl, Andreas, Werner, Felix, Widom, Allan, Wiencke, Lawrence, Wilczyński, Henryk, Winchen, Tobias, Wittkowski, David, Wundheiler, Brian, Wykes, Sarka, Yang, Lili, Yapici, Tolga, Yushkov, Alexey, Zas, Enrique, Zavrtanik, Danilo, Zavrtanik, Marko, Zepeda, Arnulfo, Zhu, Yue, Zimmermann, Benedikt, Ziolkowski, Michael, and Zuccarello, Francesca
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: Neutrinos in the cosmic ray flux with energies near 1 EeV and above are detectable with the Surface Detector array of the Pierre Auger Observatory. We report here on searches through Auger data from 1 January 2004 until 20 June 2013. No neutrino candidates were found, yielding a limit to the diffuse flux of ultra-high energy neutrinos that challenges the Waxman-Bahcall bound predictions. Neutrino identification is attempted using the broad time-structure of the signals expected in the SD stations, and is efficiently done for neutrinos of all flavors interacting in the atmosphere at large zenith angles, as well as for "Earth-skimming" neutrino interactions in the case of tau neutrinos. In this paper the searches for downward-going neutrinos in the zenith angle bins $60^\circ-75^\circ$ and $75^\circ-90^\circ$ as well as for upward-going neutrinos, are combined to give a single limit. The $90\%$ C.L. single-flavor limit to the diffuse flux of ultra-high energy neutrinos with an $E^{-2}$ spectrum in the energy range $1.0 \times 10^{17}$ eV - $2.5 \times 10^{19}$ eV is $E_\nu^2 dN_\nu/dE_\nu < 6.4 \times 10^{-9}~ {\rm GeV~ cm^{-2}~ s^{-1}~ sr^{-1}}$., Comment: Replaced with published version. Added journal reference and DOI
Published: 2015
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31. Measurement of the cosmic ray spectrum above $4{\times}10^{18}$ eV using inclined events detected with the Pierre Auger Observatory

Author: The Pierre Auger Collaboration, Aab, Alexander, Abreu, Pedro, Aglietta, Marco, Ahn, Eun-Joo, Samarai, Imen Al, Albuquerque, Ivone, Allekotte, Ingomar, Allison, Patrick, Almela, Alejandro, Castillo, Jesus Alvarez, Alvarez-Muñiz, Jaime, Batista, Rafael Alves, Ambrosio, Michelangelo, Aminaei, Amin, Anchordoqui, Luis, Andringa, Sofia, Aramo, Carla, Aranda, Victor Manuel, Arqueros, Fernando, Arsene, Nicusor, Asorey, Hernán Gonzalo, Assis, Pedro, Aublin, Julien, Ave, Maximo, Avenier, Michel, Avila, Gualberto, Awal, Nafiun, Badescu, Alina Mihaela, Barber, Kerri B, Bäuml, Julia, Baus, Colin, Beatty, Jim, Becker, Karl Heinz, Bellido, Jose A, Berat, Corinne, Bertaina, Mario Edoardo, Bertou, Xavier, Biermann, Peter, Billoir, Pierre, Blaess, Simon G, Blanco, Alberto, Blanco, Miguel, Bleve, Carla, Blümer, Hans, Boháčová, Martina, Boncioli, Denise, Bonifazi, Carla, Borodai, Nataliia, Brack, Jeffrey, Brancus, Iliana, Bridgeman, Ariel, Brogueira, Pedro, Brown, William C, Buchholz, Peter, Bueno, Antonio, Buitink, Stijn, Buscemi, Mario, Caballero-Mora, Karen S, Caccianiga, Barbara, Caccianiga, Lorenzo, Candusso, Marina, Caramete, Laurentiu, Caruso, Rossella, Castellina, Antonella, Cataldi, Gabriella, Cazon, Lorenzo, Cester, Rosanna, Chavez, Alan G, Chiavassa, Andrea, Chinellato, Jose Augusto, Chudoba, Jiri, Cilmo, Marco, Clay, Roger W, Cocciolo, Giuseppe, Colalillo, Roberta, Coleman, Alan, Collica, Laura, Coluccia, Maria Rita, Conceição, Ruben, Contreras, Fernando, Cooper, Mathew J, Cordier, Alain, Coutu, Stephane, Covault, Corbin, Cronin, James, Dallier, Richard, Daniel, Bruno, Dasso, Sergio, Daumiller, Kai, Dawson, Bruce R, de Almeida, Rogerio M, de Jong, Sijbrand J, De Mauro, Giuseppe, Neto, Joao de Mello, De Mitri, Ivan, de Oliveira, Jaime, de Souza, Vitor, del Peral, Luis, Deligny, Olivier, Dembinski, Hans, Dhital, Niraj, Di Giulio, Claudio, Di Matteo, Armando, Diaz, Johana Chirinos, Castro, Mary Lucia Díaz, Diogo, Francisco, Dobrigkeit, Carola, Docters, Wendy, D'Olivo, Juan Carlos, Dorofeev, Alexei, Hasankiadeh, Qader Dorosti, Dova, Maria Teresa, Ebr, Jan, Engel, Ralph, Erdmann, Martin, Erfani, Mona, Escobar, Carlos O, Espadanal, Joao, Etchegoyen, Alberto, Falcke, Heino, Fang, Ke, Farrar, Glennys, Fauth, Anderson, Fazzini, Norberto, Ferguson, Andrew P, Fernandes, Mateus, Fick, Brian, Figueira, Juan Manuel, Filevich, Alberto, Filipčič, Andrej, Fox, Brendan, Fratu, Octavian, Freire, Martín Miguel, Fuchs, Benjamin, Fujii, Toshihiro, García, Beatriz, Garcia-Pinto, Diego, Gate, Florian, Gemmeke, Hartmut, Gherghel-Lascu, Alexandru, Ghia, Piera Luisa, Giaccari, Ugo, Giammarchi, Marco, Giller, Maria, Głas, Dariusz, Glaser, Christian, Glass, Henry, Golup, Geraldina, Berisso, Mariano Gómez, Vitale, Primo F Gómez, González, Nicolás, Gookin, Ben, Gordon, Jacob, Gorgi, Alessio, Gorham, Peter, Gouffon, Philippe, Griffith, Nathan, Grillo, Aurelio, Grubb, Trent D, Guarino, Fausto, Guedes, Germano, Hampel, Matías Rolf, Hansen, Patricia, Harari, Diego, Harrison, Thomas A, Hartmann, Sebastian, Harton, John, Haungs, Andreas, Hebbeker, Thomas, Heck, Dieter, Heimann, Philipp, Herve, Alexander E, Hill, Gary C, Hojvat, Carlos, Hollon, Nicholas, Holt, Ewa, Homola, Piotr, Hörandel, Jörg, Horvath, Pavel, Hrabovský, Miroslav, Huber, Daniel, Huege, Tim, Insolia, Antonio, Isar, Paula Gina, Jandt, Ingolf, Jansen, Stefan, Jarne, Cecilia, Johnsen, Jeffrey A, Josebachuili, Mariela, Kääpä, Alex, Kambeitz, Olga, Kampert, Karl Heinz, Kasper, Peter, Katkov, Igor, Kégl, Balazs, Keilhauer, Bianca, Keivani, Azadeh, Kemp, Ernesto, Kieckhafer, Roger, Klages, Hans, Kleifges, Matthias, Kleinfeller, Jonny, Krause, Raphael, Krohm, Nicole, Krömer, Oliver, Kuempel, Daniel, Kunka, Norbert, LaHurd, Danielle, Latronico, Luca, Lauer, Robert, Lauscher, Markus, Lautridou, Pascal, Coz, Sandra Le, Lebrun, Didier, Lebrun, Paul, de Oliveira, Marcelo Augusto Leigui, Letessier-Selvon, Antoine, Lhenry-Yvon, Isabelle, Link, Katrin, Lopes, Luis, López, Rebeca, Casado, Aida López, Louedec, Karim, Lu, Lu, Lucero, Agustin, Malacari, Max, Maldera, Simone, Mallamaci, Manuela, Maller, Jennifer, Mandat, Dusan, Mantsch, Paul, Mariazzi, Analisa, Marin, Vincent, Mariş, Ioana, Marsella, Giovanni, Martello, Daniele, Martin, Lilian, Martinez, Humberto, Bravo, Oscar Martínez, Martraire, Diane, Meza, Jimmy Masías, Mathes, Hermann-Josef, Mathys, Sebastian, Matthews, James, Matthews, John, Matthiae, Giorgio, Maurel, Detlef, Maurizio, Daniela, Mayotte, Eric, Mazur, Peter, Medina, Carlos, Medina-Tanco, Gustavo, Meissner, Rebecca, Mello, Victor, Melo, Diego, Menshikov, Alexander, Messina, Stefano, Meyhandan, Rishi, Micheletti, Maria Isabel, Middendorf, Lukas, Minaya, Ignacio A, Miramonti, Lino, Mitrica, Bogdan, Molina-Bueno, Laura, Mollerach, Silvia, Montanet, François, Morello, Carlo, Mostafá, Miguel, Moura, Celio A, Muller, Marcio Aparecido, Müller, Gero, Müller, Sarah, Mussa, Roberto, Navarra, Gianni, Navas, Sergio, Necesal, Petr, Nellen, Lukas, Nelles, Anna, Neuser, Jens, Newton, David, Nguyen, Phong H, Niculescu-Oglinzanu, Mihai, Niechciol, Marcus, Niemietz, Lukas, Niggemann, Tim, Nitz, Dave, Nosek, Dalibor, Novotny, Vladimir, Nožka, Lyberis, Ochilo, Livingstone, Oikonomou, Foteini, Olinto, Angela, Olmos-Gilbaja, Victor, Pacheco, Noelia, Selmi-Dei, Daniel Pakk, Palatka, Miroslav, Pallotta, Juan, Papenbreer, Philipp, Parente, Gonzalo, Parra, Alejandra, Paul, Thomas, Pech, Miroslav, Pękala, Jan, Pelayo, Rodrigo, Pepe, Iuri, Perrone, Lorenzo, Petermann, Emily, Peters, Christine, Petrera, Sergio, Petrov, Yevgeniy, Phuntsok, Jamyang, Piegaia, Ricardo, Pierog, Tanguy, Pieroni, Pablo, Pimenta, Mário, Pirronello, Valerio, Platino, Manuel, Plum, Matthias, Porcelli, Alessio, Porowski, Czeslaw, Prado, Raul Ribeiro, Privitera, Paolo, Prouza, Michael, Purrello, Victor, Quel, Eduardo J, Querchfeld, Sven, Quinn, Sean, Rautenberg, Julian, Ravel, Olivier, Ravignani, Diego, Revenu, Benoît, Ridky, Jan, Riggi, Simone, Risse, Markus, Ristori, Pablo, Rizi, Vincenzo, de Carvalho, Washington Rodrigues, Fernandez, Gonzalo Rodriguez, Rojo, Jorge Rubén Rodriguez, Rodríguez-Frías, Maria Dolores, Rogozin, Dmytro, Rosado, Jaime, Roth, Markus, Roulet, Esteban, Rovero, Adrian, Saffi, Steven J, Saftoiu, Alexandra, Salamida, Francesco, Salazar, Humberto, Saleh, Ahmed, Greus, Francisco Salesa, Salina, Gaetano, Sánchez, Federico, Sanchez-Lucas, Patricia, Santos, Edivaldo Moura, Santos, Eva, Sarazin, Fred, Sarkar, Biswaijt, Sarmento, Raul, Sato, Ricardo, Scarso, Carlos, Schauer, Markus, Scherini, Viviana, Schieler, Harald, Schiffer, Peter, Schmidt, David, Scholten, Olaf, Schoorlemmer, Harm, Schovánek, Petr, Schröder, Frank G, Schulz, Alexander, Schulz, Johannes, Schumacher, Johannes, Sciutto, Sergio, Segreto, Alberto, Settimo, Mariangela, Shadkam, Amir, Shellard, Ronald C, Sidelnik, Iván, Sigl, Guenter, Sima, Octavian, Śmiałkowski, Andrzej, Šmída, Radomir, Snow, Gregory, Sommers, Paul, Sorokin, J, Squartini, Ruben, Srivastava, Yogendra N, Stanca, Denis, Stanič, Samo, Stapleton, James, Stasielak, Jaroslaw, Stephan, Maurice, Stutz, Anne, Suarez, Federico, Suomijärvi, Tiina, Supanitsky, A Daniel, Sutherland, Michael, Swain, John, Szadkowski, Zbigniew, Taborda, Oscar Alejandro, Tapia, Alex, Tepe, Andreas, Theodoro, Vanessa Menezes, Timmermans, Charles, Peixoto, Carlos J Todero, Toma, Gabriel, Tomankova, Lenka, Tomé, Bernardo, Tonachini, Aurelio, Elipe, Guillermo Torralba, Machado, Diego Torres, Travnicek, Petr, Ulrich, Ralf, Unger, Michael, Urban, Martin, Galicia, Jose F Valdés, Valiño, Ines, Valore, Laura, van Aar, Guus, van Bodegom, Patrick, Berg, Ad M van den, van Velzen, Sjoert, van Vliet, Arjen, Varela, Enrique, Cárdenas, Bernardo Vargas, Varner, Gary, Vasquez, Rafael, Vázquez, Jose R, Vázquez, Ricardo, Veberič, Darko, Verzi, Valerio, Vicha, Jakub, Videla, Mariela, Villaseñor, Luis, Vlcek, Brian, Vorobiov, Serguei, Wahlberg, Hernan, Wainberg, Oscar, Walz, David, Watson, Alan, Weber, Marc, Weidenhaupt, Klaus, Weindl, Andreas, Werner, Felix, Widom, Allan, Wiencke, Lawrence, Wilczyński, Henryk, Winchen, Tobias, Wittkowski, David, Wundheiler, Brian, Wykes, Sarka, Yang, Lili, Yapici, Tolga, Yushkov, Alexey, Zas, Enrique, Zavrtanik, Danilo, Zavrtanik, Marko, Zepeda, Arnulfo, Zhu, Yue, Zimmermann, Benedikt, Ziolkowski, Michael, and Zuccarello, Francesca
Subjects: Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Experiment
Abstract: A measurement of the cosmic-ray spectrum for energies exceeding $4{\times}10^{18}$ eV is presented, which is based on the analysis of showers with zenith angles greater than $60^{\circ}$ detected with the Pierre Auger Observatory between 1 January 2004 and 31 December 2013. The measured spectrum confirms a flux suppression at the highest energies. Above $5.3{\times}10^{18}$ eV, the "ankle", the flux can be described by a power law $E^{-\gamma}$ with index $\gamma=2.70 \pm 0.02 \,\text{(stat)} \pm 0.1\,\text{(sys)}$ followed by a smooth suppression region. For the energy ($E_\text{s}$) at which the spectral flux has fallen to one-half of its extrapolated value in the absence of suppression, we find $E_\text{s}=(5.12\pm0.25\,\text{(stat)}^{+1.0}_{-1.2}\,\text{(sys)}){\times}10^{19}$ eV., Comment: Replaced with published version. Added journal reference and DOI
Published: 2015
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32. The Pierre Auger Observatory: Contributions to the 33rd International Cosmic Ray Conference (ICRC 2013)

Author: The Pierre Auger Collaboration, Aab, Alexander, Abreu, Pedro, Aglietta, Marco, Ahlers, Markus, Ahn, Eun-Joo, Albuquerque, Ivone, Allekotte, Ingomar, Allen, Jeff, Allison, Patrick, Almela, Alejandro, Castillo, Jesus Alvarez, Alvarez-Muñiz, Jaime, Batista, Rafael Alves, Ambrosio, Michelangelo, Aminaei, Amin, Anchordoqui, Luis, Andringa, Sofia, Antičić, Tome, Aramo, Carla, Arqueros, Fernando, Asorey, Hernán Gonzalo, Assis, Pedro, Aublin, Julien, Ave, Maximo, Avenier, Michel, Avila, Gualberto, Badescu, Alina Mihaela, Barber, Kerri B., Bardenet, Remi, Bäuml, Julia, Baus, Colin, Beatty, Jim, Becker, Karl Heinz, Bellido, Jose A., BenZvi, Segev, Berat, Corinne, Bertou, Xavier, Biermann, Peter, Billoir, Pierre, Blanco, Francisco, Blanco, Miguel, Bleve, Carla, Blümer, Hans, Boháčová, Martina, Boncioli, Denise, Bonifazi, Carla, Bonino, Raffaella, Borodai, Nataliia, Brack, Jeffrey, Brancus, Iliana, Brogueira, Pedro, Brown, William C., Buchholz, Peter, Bueno, Antonio, Buscemi, Mario, Caballero-Mora, Karen S., Caccianiga, Barbara, Caccianiga, Lorenzo, Candusso, Marina, Caramete, Laurentiu, Caruso, Rossella, Castellina, Antonella, Cataldi, Gabriella, Cazon, Lorenzo, Cester, Rosanna, Cheng, Shih-Ho, Chiavassa, Andrea, Chinellato, Jose Augusto, Chudoba, Jiri, Cilmo, Marco, Clay, Roger W, Cocciolo, Giuseppe, Colalillo, Roberta, Collica, Laura, Coluccia, Maria Rita, Conceição, Ruben, Contreras, Fernando, Cooper, Mathew J., Coutu, Stephane, Covault, Corbin, Criss, Adrienne, Cronin, James, Curutiu, Alex, Dallier, Richard, Daniel, Bruno, Dasso, Sergio, Daumiller, Kai, Dawson, Bruce R., de Almeida, Rogerio M., De Domenico, Manlio, de Jong, Sijbrand J., De La Vega, Gonzalo, Junior, Walter J. M. de Mello, Neto, Joao de Mello, De Mitri, Ivan, de Souza, Vitor, de Vries, Krijn, del Peral, Luis, Deligny, Olivier, Dembinski, Hans, Dhital, Niraj, Di Giulio, Claudio, Di Matteo, Armando, Diaz, Johana Chirinos, Castro, Mary Lucia Díaz, Diep, Pham Ngoc, Diogo, Francisco, Dobrigkeit, Carola, Docters, Wendy, D'Olivo, Juan Carlos, Dong, Pham Ngoc, Dorofeev, Alexei, Anjos, Joao dos, Dova, Maria Teresa, Ebr, Jan, Engel, Ralph, Erdmann, Martin, Escobar, Carlos O., Espadanal, Joao, Etchegoyen, Alberto, Luis, Pedro Facal San, Falcke, Heino, Fang, Ke, Farrar, Glennys, Fauth, Anderson, Fazzini, Norberto, Ferguson, Andrew P., Fick, Brian, Figueira, Juan Manuel, Filevich, Alberto, Filipčič, Andrej, Foerster, Nadine, Fox, Brendan, Fracchiolla, Claudia, Fraenkel, Eric Daniel, Fratu, Octavian, Fröhlich, Uwe, Fuchs, Benjamin, Gaior, Romain, Gamarra, Rodolfo Federico, Gambetta, Silvia, García, Beatriz, Roca, Sayri Tupac Garcia, Garcia-Gamez, Diego, Garcia-Pinto, Diego, Garilli, Gianpaolo, Bravo, Alberto Gascon, Gemmeke, Hartmut, Ghia, Piera Luisa, Giammarchi, Marco, Giller, Maria, Gitto, Javier, Glaser, Christian, Glass, Henry, Albarracin, Flavia Gomez, Berisso, Mariano Gómez, Vitale, Primo F. Gómez, Gonçalves, Patrícia, Gonzalez, Javier G., Gookin, Ben, Gorgi, Alessio, Gorham, Peter, Gouffon, Philippe, Grebe, Stefan, Griffith, Nathan, Grillo, Aurelio, Grubb, Trent D., Guardincerri, Yann, Guarino, Fausto, Guedes, Germano, Hansen, Patricia, Harari, Diego, Harrison, Thomas A., Harton, John, Haungs, Andreas, Hebbeker, Thomas, Heck, Dieter, Herve, Alexander E., Hill, Gary C., Hojvat, Carlos, Hollon, Nicholas, Holt, Ewa, Homola, Piotr, Hörandel, Joerg, Horvath, Pavel, Hrabovský, Miroslav, Huber, Daniel, Huege, Tim, Insolia, Antonio, Isar, Paula Gina, Jansen, Stefan, Jarne, Cecilia, Josebachuili, Mariela, Kadija, Krešo, Kambeitz, Olga, Kampert, Karl Heinz, Karhan, Pavel, Kasper, Peter, Katkov, Igor, Kégl, Balazs, Keilhauer, Bianca, Keivani, Azadeh, Kemp, Ernesto, Kieckhafer, Roger, Klages, Hans, Kleifges, Matthias, Kleinfeller, Jonny, Knapp, Johannes, Krause, Raphael, Krohm, Nicole, Krömer, Oliver, Kruppke-Hansen, Daniel, Kuempel, Daniel, Kunka, Norbert, La Rosa, Giovanni, LaHurd, Danielle, Latronico, Luca, Lauer, Robert, Lauscher, Markus, Lautridou, Pascal, Coz, Sandra Le, Leão, Milton, Lebrun, Paul, Lebrun, Didier, de Oliveira, Marcelo Augusto Leigui, Letessier-Selvon, Antoine, Lhenry-Yvon, Isabelle, Link, Katrin, López, Rebeca, Agüera, Angeles Lopez, Louedec, Karim, Bahilo, Julio Lozano, Lu, Lu, Lucero, Agustin, Ludwig, Marianne, Lyberis, Haris, Maccarone, Maria Concetta, Malacari, Max, Maldera, Simone, Maller, Jennifer, Mandat, Dusan, Mantsch, Paul, Mariazzi, Analisa, Marin, Vincent, Mariş, Ioana, Falcon, Hugo R. Marquez, Marsella, Giovanni, Martello, Daniele, Martin, Lilian, Martinez, Humberto, Bravo, Oscar Martínez, Martraire, Diane, Meza, Jimmy Masías, Mathes, Hermann-Josef, Matthews, James, Matthews, John A. J., Matthiae, Giorgio, Maurel, Detlef, Maurizio, Daniela, Mayotte, Eric, Mazur, Peter, Medina, Carlos, Medina-Tanco, Gustavo, Melissas, Maximilien, Melo, Diego, Menichetti, Ezio, Menshikov, Alexander, Messina, Stefano, Meyhandan, Rishi, Mićanović, Saša, Micheletti, Maria Isabel, Middendorf, Lukas, Minaya, Ignacio A., Miramonti, Lino, Mitrica, Bogdan, Molina-Bueno, Laura, Mollerach, Silvia, Monasor, Maria, Ragaigne, Delphine Monnier, Montanet, François, Morales, Benjamin, Morello, Carlo, Moreno, Juan Cruz, Mostafá, Miguel, Moura, Celio A., Muller, Marcio Aparecido, Müller, Gero, Münchmeyer, Moritz, Mussa, Roberto, Navarra, Gianni, Navarro, Jose Luis, Navas, Sergio, Necesal, Petr, Nellen, Lukas, Nelles, Anna, Neuser, Jens, Nhung, Pham Thi Tuyet, Niechciol, Marcus, Niemietz, Lukas, Niggemann, Tim, Nitz, Dave, Nosek, Dalibor, Nožka, Libor, Oehlschläger, Juergen, Olinto, Angela, Oliveira, Micael, Ortiz, Montserrat, Pacheco, Noelia, Selmi-Dei, Daniel Pakk, Palatka, Miroslav, Pallotta, Juan, Palmieri, Nunzia, Parente, Gonzalo, Parra, Alejandra, Pastor, Sergio, Paul, Thomas, Pech, Miroslav, Pękala, Jan, Pelayo, Rodrigo, Pepe, Iuri, Perrone, Lorenzo, Pesce, Roberto, Petermann, Emily, Petrera, Sergio, Petrolini, Alessandro, Petrov, Yevgeniy, Piegaia, Ricardo, Pierog, Tanguy, Pieroni, Pablo, Pimenta, Mário, Pirronello, Valerio, Platino, Manuel, Plum, Matthias, Pontz, Michael, Porcelli, Alessio, Preda, Titi, Privitera, Paolo, Prouza, Michael, Quel, Eduardo J, Querchfeld, Sven, Quinn, Sean, Rautenberg, Julian, Ravel, Olivier, Ravignani, Diego, Revenu, Benoît, Ridky, Jan, Riggi, Simone, Risse, Markus, Ristori, Pablo, Rivera, Hugo M., Rizi, Vincenzo, Roberts, Jonathan, de Carvalho, Washington Rodrigues, Cabo, Iago Rodriguez, Fernandez, Gonzalo Rodriguez, Martino, Julio Rodriguez, Rojo, Jorge Rubén Rodriguez, Rodríguez-Frías, Maria Dolores, Ros, Germán, Rosado, Jaime, Rossler, Tomas, Roth, Markus, Rouillé-d'Orfeuil, Benjamin, Roulet, Esteban, Rovero, Adrian, Rühle, Christoph, Saffi, Steven J., Saftoiu, Alexandra, Salamida, Francesco, Salazar, Humberto, Greus, Francisco Salesa, Salina, Gaetano, Sánchez, Federico, Sanchez-Lucas, Patricia, Santo, Catarina E., Santos, Eva, Santos, Edivaldo Moura, Sarazin, Fred, Sarkar, Biswaijt, Sarmento, Raul, Sato, Ricardo, Scharf, Nils, Scherini, Viviana, Schieler, Harald, Schiffer, Peter, Schmidt, Adrian, Scholten, Olaf, Schoorlemmer, Harm, Schovánek, Petr, Schröder, Frank G., Schulz, Alexander, Schulz, Johannes, Sciutto, Sergio, Scuderi, Mario, Segreto, Alberto, Settimo, Mariangela, Shadkam, Amir, Shellard, Ronald C., Sidelnik, Iván, Sigl, Guenter, Sima, Octavian, Śmiałkowski, Andrzej, Šmída, Radomir, Snow, Gregory, Sommers, Paul, Sorokin, J., Spinka, Hal, Squartini, Ruben, Srivastava, Yogendra N., Stanič, Samo, Stapleton, James, Stasielak, Jaroslaw, Stephan, Maurice, Straub, Marcel, Stutz, Anne, Suarez, Federico, Suomijärvi, Tiina, Supanitsky, A. Daniel, Šuša, Tatjana, Sutherland, Michael, Swain, John, Szadkowski, Zbigniew, Szuba, Marek, Tapia, Alex, Tartare, Mathieu, Taşcău, Oana, Thao, Nguyen Thi, Tiffenberg, Javier, Timmermans, Charles, Tkaczyk, Wieslaw, Peixoto, Carlos J. Todero, Toma, Gabriel, Tomankova, Lenka, Tomé, Bernardo, Tonachini, Aurelio, Elipe, Guillermo Torralba, Machado, Diego Torres, Travnicek, Petr, Tridapalli, Diogo, Trovato, Enrica, Tueros, Matias, Ulrich, Ralf, Unger, Michael, Galicia, Jose F. Valdés, Valiño, Ines, Valore, Laura, van Aar, Guus, Berg, Ad M. van den, van Velzen, Sjoert, van Vliet, Arjen, Varela, Enrique, Cárdenas, Bernardo Vargas, Varner, Gary, Vázquez, Jose R., Vázquez, Ricardo, Veberič, Darko, Verzi, Valerio, Vicha, Jakub, Videla, Mariela, Villaseñor, Luis, Wahlberg, Hernan, Wahrlich, Philip, Wainberg, Oscar, Walz, David, Watson, Alan, Weber, Marc, Weidenhaupt, Klaus, Weindl, Andreas, Werner, Felix, Westerhoff, Stefan, Whelan, Ben J., Widom, Allan, Wieczorek, Grzegorz, Wiencke, Lawrence, Wilczyńska, Barbara, Wilczyński, Henryk, Will, Martin, Williams, Christopher, Winchen, Tobias, Wundheiler, Brian, Wykes, Sarka, Yamamoto, Tokonatsu, Yapici, Tolga, Younk, Patrick, Yuan, Guofeng, Yushkov, Alexey, Zamorano, Bruno, Zarza, Gabriel, Zas, Enrique, Zavrtanik, Danilo, Zavrtanik, Marko, Zaw, Ingyin, Zepeda, Arnulfo, Zhou, Jing, Zhu, Yue, Silva, Marcelo Zimbres, and Ziolkowski, Michael
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: Contributions of the Pierre Auger Collaboration to the 33rd International Cosmic Ray Conference, Rio de Janeiro, Brazil, July 2013, Comment: Contributions to the 33rd International Cosmic Ray Conference, Rio de Janeiro, Brazil, July 2013
Published: 2013

33. The Pierre Auger Observatory: results on the highest energy particles

Author: Conceição, Ruben
Subjects: Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: The Pierre Auger Observatory has been designed to investigate the most energetic particles known, the ultra high energy cosmic rays. The observatory, covering an area of 3000 km^2, combines two different detection techniques to study the huge particle showers created by the interaction of primary cosmic rays with the atmosphere. The analysis of the showers allows one to extract information on the nature of the primary cosmic rays, as well as their origin. Moreover, the study of the interaction of these particles with the atmosphere offers a unique window to study particle physics at an energy more than one order of magnitude above the current highest energy human-made accelerator. In this contribution selected results are presented, with a focus on the primary mass composition, the determination of the number of muons, which is sensitive to the shower hadronic interactions, and the measurement of the proton-air cross-section at sqrt(s) = 57 TeV. For the last topic, a link with the proton-proton cross-section measurements using accelerators will be made. Results on the cosmic ray energy spectrum and on searches for ultra high energy photons and neutrinos, will also be discussed., Comment: 13 pages, to appear in conference proceedings of Time and Matter 2013, Venice, Italy
Published: 2013

34. The interplay between the electromagnetic and the muonic longitudinal profile at production

Author: Conceição, Ruben, Andringa, Sofia, Cazon, Lorenzo, and Pimenta, Mário
Subjects: High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Experiment
Abstract: The electromagnetic and the muonic longitudinal profile at production enclosure important information about the primary particle and the hadronic interactions that rule the shower development. In fact, these two profiles provide two different insights of the shower: the electromagnetic component gives a measurement of the energy and the strength of the neutral pion channel; while the muonic profile, being intimately related with the charged mesons decays, can be used as a direct probe for the high energy hadronic interactions. In this work we explore the interplay between the electromagnetic and muonic profiles, by analysing their phenomenologic behaviour for different primary masses and energies, zenith angles, and also different high energy hadronic interaction models. We have found that the muonic longitudinal profile at production displays universal features similar to what is known for the electromagnetic one. Moreover, we show that both profiles have new primary mass composition variables which are fairly independent of the high energy hadronic interaction model. Finally we discuss how the information in the electromagnetic and the muonic longitudinal profile can be combined to break the degeneracy between the primary mass composition and the high energy hadronic physics., Comment: 5 pages, to appear in conference proceedings of International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI 2012), Berlin, Germany
Published: 2013
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35. Sensitivity to primary composition and hadronic models from average shape of high energy cosmic ray shower profiles

Author: Andringa, Sofia, Conceição, Ruben, Diogo, Francisco, and Pimenta, Mário
Subjects: High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena
Abstract: The concept of Universal Shower Profile is used to characterize the average behavior of high energy cosmic rays. The shape variables contain important information about composition. They are independent of the primary cross-section by construction, but affected by other hadronic parameters, like multiplicity. The two variables give access to the average nuclear mass of the sample and their compatibility serves as a test of hadronic models.
Published: 2012

36. Accessing the forward region of the energy spectrum of leading neutral pions in ultra-high energy proton-air interactions

Author: Martins, Miguel Alexandre, primary, Cazon, Lorenzo, additional, Conceição, Rúben, additional, and Riehn, Felix, additional
Published: 2023
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37. Gamma/hadron discrimination at PeV energies through the azimuthal fluctuations of air shower footprint at the ground

Author: Conceição, Rúben, primary, Bakalová, A., additional, Gibilisco, L., additional, Novotny, V., additional, Pimenta, M., additional, Tome, B., additional, and Vicha, J., additional
Published: 2023
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38. Messengers of the High Energy Universe

Author: De Angelis, Alessandro, Pimenta, Mário, Conceição, Ruben, and Merino, Carlos, editor
Published: 2015
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39. Interpretation of measurements of the number of muons in extensive air shower experiments

Author: R. Prado, Raul, Conceição, Ruben, Pimenta, Mário, and de Souza, Vitor
Published: 2016
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40. Mando et Lego: as pontes nos testamentos eclesiásticos portugueses (1071 a 1325)

Author: Da Conceição, Rúben Filipe Teixeira
Abstract: Através da análise dos documentos dos eclesiásticos das catedrais medievais portuguesas, inseridos nos Testamenta Ecclesiae Portugaliae (entre 1071, ano da restauração da arquidiocese de Braga, e 1325, final do reinado de D. Dinis), pretendemos identificar as mudanças e continuidades no que toca às pontes existentes no território do Portugal medievo, bem como examinar a sua distribuição no espaço, potenciais valores e bens deixados em legado para a construção ou manutenção destas estruturas, bem como averiguar a existência ou não de tendências temporais e espaciais., Lusitania Sacra, No 44 (2021): Os capuchos arrábidos em tempo de reformas: ideário, textos e materialidades
Published: 2022
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41. The upgrade of the Pierre Auger Observatory with the Scintillator Surface Detector

Author: Pierre Auger Collaboration, Cataldi, G., Abreu, Pedro, Aglietta, Marco, Albury, Justin M., Allekotte, Ingomar, Almela, Alejandro, Alvarez-Muniz, Jaime, Alves Batista, Rafael, Anastasi, Gioacchino Alex, Anchordoqui, Luis A., Andrada, Belén, Andringa, Sofia, Aramo, Carla, Araújo Ferreira, Paulo Ricardo, Arteaga Velazquez, Juan Carlos, Asorey, Hernán Gonzalo, Assis, Pedro, Avila, Gualberto, Badescu, Alina Mihaela, Bakalova, Alena, Balaceanu, Alexandru, Barbato, Felicia, Barreira Luz, Ricardo Jorge, Becker, Karl-Heinz, Bellido, Jose A., Berat, Corinne, Bertaina, Mario Edoardo, Bertou, Xavier, Biermann, Peter L., Binet, Virginia, Bismark, Kathrin, Bister, Teresa, Biteau, Jonathan, Blazek, Jiri, Bleve, Carla, Bohacova, Martina, boncioli, denise, Bonifazi, Carla, Bonneau Arbeletche, Luan, Borodai, Nataliia, Botti, Ana Martina, Brack, Jeffrey, Bretz, Thomas, Brichetto Orchera, P. Gabriel, Briechle, Florian Lukas, Buchholz, Peter, Bueno, Antonio, Buitink, Stijn, Buscemi, Mario, Büsken, Max, Caballero-Mora, Karen S., Caccianiga, Lorenzo, Canfora, Fabrizia, Caracas, Ioana, Carceller, Juan Miguel, Caruso, Rossella, Castellina, Antonella, Catalani, Fernando, Cataldi, Gabriella, Cazon, Lorenzo, Cerda, Marcos, Chinellato, Jose Augusto, Chudoba, Jiri, Chytka, Ladislav, Clay, Roger W., Cobos Cerutti, Agustín, Colalillo, Roberta, Coleman, Alan, Coluccia, Maria Rita, Conceição, Rúben, Condorelli, Antonio, Consolati, Giovanni, Contreras, Fernando, Convenga, Fabio, Correia dos Santos, Diego, Covault, Corbin, Dasso, Sergio, Daumiller, Kai, Dawson, Bruce R., Day, Jarryd A., Almeida, Rogerio M. de, Jesús, Joaquín de, Jong, Sijbrand J. de, De Mauro, Giuseppe, Mello Neto, João de, De Mitri, Ivan, Oliveira, Jaime de, Oliveira Franco, Danelise de, Palma, Francesco de, Souza, Vitor de, De Vito, Emanuele, Río, Mariano del, Deligny, Olivier, Deval, Luca, Matteo, Armando di, Dobrigkeit, Carola, D'Olivo, Juan Carlos, Domingues Mendes, Luis Miguel, Anjos, Rita dos, Santos, Diego dos, Dova, Maria Teresa, Ebr, Jan, Engel, Ralph, Epicoco, Italo, Erdmann, Martin, Escobar, Carlos O., Etchegoyen, Alberto, Falcke, Heino, Farmer, John, Farrar, Glennys R., Fauth, Anderson, Fazzini, Norberto, Feldbusch, Fridtjof, Fenu, Francesco, Fick, Brian, Figueira, Juan Manuel, Filipcic, Andrej, Fitoussi, Thomas, Fodran, Tomáš, Freire, Martín Miguel, Fujii, Toshihiro, Fuster, Alan, Galea, Cristina, Galelli, Claudio, García, Beatriz, García Vegas, Adrianna Luz, Gemmeke, Hartmut, Gesualdi, Flavia, Gherghel-Lascu, Alexandru, Ghia, Piera Luisa, GIACCARI, Ugo, Giammarchi, Marco, Glombitza, Jonas, Gobbi, Fabian, Gollan, Fernando, Golup, Geraldina, Gómez Berisso, Mariano, Gómez Vitale, Primo F., Gongora, Juan Pablo, González, Juan Manuel, Gonzalez, Nicolas Martin, Goos, Isabel, Gora, Dariusz, Gorgi, Alessio, Gottowik, Marvin, Grubb, Trent D., Guarino, Fausto, Guedes, Germano, Guido, Eleonora, Hahn, Steffen, Hamal, Petr, Hampel, Matías Rolf, Hansen, Patricia María, Harari, Diego, Harvey, Violet M., Haungs, Andreas, Hebbeker, Thomas, Heck, Dieter, Hill, Gary C., Hojvat, Carlos, Hörandel, Jörg, Horvath, Pavel, Hrabovsky, Miroslav, Huege, Tim, Insolia, Antonio, Isar, Paula Gina, Janecek, Petr, Johnsen, Jeffrey A., Juryšek, Jakub, Kääpä, Alex, Kampert, Karl-Heinz, Karastathis, Nikolaos, Keilhauer, Bianca, Kemp, Julian, Khakurdikar, Abha, Kizakke Covilakam, Varada Varma, Klages, Hans, Kleifges, Matthias, Kleinfeller, Jonny, Köpke, Marcel, Kunka, Norbert, Lago, Bruno L., Lang, Rodrigo Guedes, Langner, Niklas, Leigui de Oliveira, Marcelo Augusto, Lenok, Vladimir, Letessier-Selvon, Antoine, Lhenry-Yvon, Isabelle, Lo Presti, Domenico, LOPES, Luis, López, Rebeca, Lu, Lu, Luce, Quentin, Lundquist, Jon Paul, Machado Payeras, Allan, Mancarella, Giovanni, Mandat, Dusan, Manning, Bradley C., Manshanden, Julien, Mantsch, Paul, Marafico, Sullivan, Mariazzi, Analisa, Maris, Ioana Codrina, Marsella, Giovanni, Martello, Daniele, Martinelli, Sara, Martínez Bravo, Oscar, Mastrodicasa, Massimo, Mathes, Hermann-Josef, Matthews, James, Matthiae, Giorgio, Mayotte, Eric, Mazur, Peter, Medina-Tanco, Gustavo, Melo, Diego, Menshikov, Alexander, Merenda, Kevin-Druis, Michal, Stanislav, Micheletti, Maria Isabel, Miramonti, Lino, Mollerach, Silvia, Montanet, François, Morello, Carlo, Mostafa, Miguel, Müller, Ana L., Muller, Marcio Aparecido, Mulrey, Katharine, Mussa, Roberto, Muzio, Marco Stein, Namasaka, Wilson M., Nasr-Esfahani, Alina, Nellen, Lukas, Niculescu-Oglinzanu, Mihai, Niechciol, Marcus, Nitz, Dave, Nosek, Dalibor, Novotný, Vladimír, Nozka, Libor, Nucita, Achille, Nunez, Luis A., Palatka, Miroslav, Pallotta, Juan, Papenbreer, Philipp, Parente, Gonzalo, Parra, Alejandra, Pawlowsky, Jannis, Pech, Miroslav, Pedreira, Francisco, Pękala, Jan, Pelayo, Rodrigo, Peña-Rodríguez, Jesús, Pereira Martins, Edyvania Emily, Perez Armand, Johnnier, Pérez Bertolli, Carmina, Perlin, Matías, Perrone, Lorenzo, Petrera, Sergio, Pierog, Tanguy, Pimenta, Mário, Pirronello, Valerio, Platino, Manuel, Pont, Bjarni, Pothast, Mart, Privitera, Paolo, Prouza, Michael, Puyleart, Andrew, Querchfeld, Sven, Rautenberg, Julian, Ravignani, Diego, Reininghaus, Maximilian, Ridky, Jan, Riehn, Felix, Risse, Markus, Rizi, Vincenzo, Rodrigues de Carvalho, Washington, Rodriguez Rojo, Jorge Rubén, Roncoroni, Matías J., Rossoni, Simone, Roth, Markus, Roulet, Esteban, Rovero, Adrian, Ruehl, Philip, Saftoiu, Alexandra, Salamida, Francesco, Salazar, Humberto Ibarguen, Salina, Gaetano, Sanabria Gomez, Jose, Sánchez, Federico Andrés, Santos, Edivaldo Moura, Santos, Eva, Sarazin, Fred, Sarmento, Raul, Sarmiento-Cano, Christian, Sato, Ricardo, Savina, Pierpaolo, Schäfer, Christoph M., Scherini, Viviana, Schieler, Harald, Schimassek, Martin, Schimp, Michael, Schlüter, Felix, Schmidt, David, Scholten, Olaf, Schovanek, Petr, Schröder, Frank G., Schröder, Sonja, Schulte, Josina, Sciutto, Sergio, Scornavacche, Marina, Segreto, Alberto, Sehgal, Srijan, Shellard, Ronald C., Sigl, Guenter, Silli, Gaia, Sima, Octavian, Smida, Radomir, Sommers, Paul, Soriano, Jorge F., Souchard, Julien, Squartini, Ruben, Stadelmaier, Maximilian, Stanca, Denis, Stanič, Samo, Stasielak, Jaroslaw, Stassi, Patrick, Streich, Alexander, Suárez-Durán, Mauricio, Sudholz, Tristan, Suomijarvi, Tiina, Supanitsky, A. Daniel, Szadkowski, Zbigniew, Tapia, Alex, Taricco, Carla, Timmermans, Charles, Tkachenko, Olena, Tobiska, Petr, Todero Peixoto, Carlos J., Tomé, Bernardo, Torrès, Zoé, Travaini, Andres, Travnicek, Petr, Trimarelli, Caterina, Tueros, Matias, Ulrich, Ralf, Unger, Michael, Vaclavek, Lukáš, Vacula, Martin, Valdés Galicia, Jose F., Valore, Laura, Varela, Enrique, Vásquez-Ramírez, Adriana, Veberic, Darko, Ventura, Cynthia, Vergara Quispe, Indira D., Verzi, Valerio, Vicha, Jakub, Vink, Jacco, Vorobiov, Serguei, Wahlberg, Hernan, Watanabe, Clara Keiko Oliveira, Watson, Alan, Weber, Marc, Weindl, Andreas, Wiencke, Lawrence, Wilczyński, Henryk, Wirtz, Marcus, Wittkowski, David, Wundheiler, Brian, Yushkov, Alexey, Zapparrata, Orazio, Zas, Enrique, Zavrtanik, Danilo, Zavrtanik, Marko, and Zehrer, Lukas
Subjects: Pierre Auger Observatory, Photomultiplier, business.industry, Physics, Astronomy, Detector, Electrical engineering, Scintillator, Data acquisition, Upgrade, Observatory, Experimental High Energy Physics, ddc:530, Electronics, High Energy Physics, business
Abstract: Since its full commissioning in 2008, the Pierre Auger Observatory has consistently demonstrated its scientific productivity. A major upgrade of the Surface Detector array (SD) improves the capabilities of measuring the different components of extensive air showers. One of the elements of the upgrade consists of new Scintillator Surface Detectors (SSD) placed on top of the Water-Cherenkov stations of the SD. At the Observatory, the integration of the SSD components and their deployment in the array is well advanced. In this paper, the main challenges and characteristics of the construction and installation will be reviewed. Started in 2016, an Engineering Array of twelve upgraded stations has been taking data in the field. In March 2019, a preproduction array of 77 SSDs started data acquisition with an adapted version of non-upgraded electronics. It is collecting events and proving the goodness of SSD design. Since December 2020, the upgraded electronics boards are being deployed in the field together with the photomultiplier tubes, increasing the number of SSD detectors, which are taking data continuosly with good stability. In this paper, the-long term performance of a subset of stations acquiring data for more than two years will be discussed. The data collected so far demonstrate the quality of the new detectors and the physics potential of the upgrade project
Published: 2022

42. Indication of a mass-dependent anisotropy above 10 18.7 eV in the hybrid data of the Pierre Auger Observatory

Author: Pierre Auger Collaboration, Mayotte, Eric, Abreu, Pedro, Aglietta, Marco, Albury, Justin M., Allekotte, Ingomar, Almela, Alejandro, Alvarez-Muniz, Jaime, Alves Batista, Rafael, Anastasi, Gioacchino Alex, Anchordoqui, Luis A., Andrada, Belén, Andringa, Sofia, Aramo, Carla, Araújo Ferreira, Paulo Ricardo, Arteaga Velazquez, Juan Carlos, Asorey, Hernán Gonzalo, Assis, Pedro, Avila, Gualberto, Badescu, Alina Mihaela, Bakalova, Alena, Balaceanu, Alexandru, Barbato, Felicia, Barreira Luz, Ricardo Jorge, Becker, Karl-Heinz, Bellido, Jose A., Berat, Corinne, Bertaina, Mario Edoardo, Bertou, Xavier, Biermann, Peter L., Binet, Virginia, Bismark, Kathrin, Bister, Teresa, Biteau, Jonathan, Blazek, Jiri, Bleve, Carla, Bohacova, Martina, boncioli, denise, Bonifazi, Carla, Bonneau Arbeletche, Luan, Borodai, Nataliia, Botti, Ana Martina, Brack, Jeffrey, Bretz, Thomas, Brichetto Orchera, P. Gabriel, Briechle, Florian Lukas, Buchholz, Peter, Bueno, Antonio, Buitink, Stijn, Buscemi, Mario, Büsken, Max, Caballero-Mora, Karen S., Caccianiga, Lorenzo, Canfora, Fabrizia, Caracas, Ioana, Carceller, Juan Miguel, Caruso, Rossella, Castellina, Antonella, Catalani, Fernando, Cataldi, Gabriella, Cazon, Lorenzo, Cerda, Marcos, Chinellato, Jose Augusto, Chudoba, Jiri, Chytka, Ladislav, Clay, Roger W., Cobos Cerutti, Agustín, Colalillo, Roberta, Coleman, Alan, Coluccia, Maria Rita, Conceição, Rúben, Condorelli, Antonio, Consolati, Giovanni, Contreras, Fernando, Convenga, Fabio, Correia dos Santos, Diego, Covault, Corbin, Dasso, Sergio, Daumiller, Kai, Dawson, Bruce R., Day, Jarryd A., Almeida, Rogerio M. de, Jesús, Joaquín de, Jong, Sijbrand J. de, De Mauro, Giuseppe, Mello Neto, João de, De Mitri, Ivan, Oliveira, Jaime de, Oliveira Franco, Danelise de, Palma, Francesco de, Souza, Vitor de, De Vito, Emanuele, Río, Mariano del, Deligny, Olivier, Deval, Luca, Matteo, Armando di, Dobrigkeit, Carola, D'Olivo, Juan Carlos, Domingues Mendes, Luis Miguel, Anjos, Rita dos, Santos, Diego dos, Dova, Maria Teresa, Ebr, Jan, Engel, Ralph, Epicoco, Italo, Erdmann, Martin, Escobar, Carlos O., Etchegoyen, Alberto, Falcke, Heino, Farmer, John, Farrar, Glennys R., Fauth, Anderson, Fazzini, Norberto, Feldbusch, Fridtjof, Fenu, Francesco, Fick, Brian, Figueira, Juan Manuel, Filipcic, Andrej, Fitoussi, Thomas, Fodran, Tomáš, Freire, Martín Miguel, Fujii, Toshihiro, Fuster, Alan, Galea, Cristina, Galelli, Claudio, García, Beatriz, García Vegas, Adrianna Luz, Gemmeke, Hartmut, Gesualdi, Flavia, Gherghel-Lascu, Alexandru, Ghia, Piera Luisa, GIACCARI, Ugo, Giammarchi, Marco, Glombitza, Jonas, Gobbi, Fabian, Gollan, Fernando, Golup, Geraldina, Gómez Berisso, Mariano, Gómez Vitale, Primo F., Gongora, Juan Pablo, González, Juan Manuel, Gonzalez, Nicolas Martin, Goos, Isabel, Gora, Dariusz, Gorgi, Alessio, Gottowik, Marvin, Grubb, Trent D., Guarino, Fausto, Guedes, Germano, Guido, Eleonora, Hahn, Steffen, Hamal, Petr, Hampel, Matías Rolf, Hansen, Patricia María, Harari, Diego, Harvey, Violet M., Haungs, Andreas, Hebbeker, Thomas, Heck, Dieter, Hill, Gary C., Hojvat, Carlos, Hörandel, Jörg, Horvath, Pavel, Hrabovsky, Miroslav, Huege, Tim, Insolia, Antonio, Isar, Paula Gina, Janecek, Petr, Johnsen, Jeffrey A., Juryšek, Jakub, Kääpä, Alex, Kampert, Karl-Heinz, Karastathis, Nikolaos, Keilhauer, Bianca, Kemp, Julian, Khakurdikar, Abha, Kizakke Covilakam, Varada Varma, Klages, Hans, Kleifges, Matthias, Kleinfeller, Jonny, Köpke, Marcel, Kunka, Norbert, Lago, Bruno L., Lang, Rodrigo Guedes, Langner, Niklas, Leigui de Oliveira, Marcelo Augusto, Lenok, Vladimir, Letessier-Selvon, Antoine, Lhenry-Yvon, Isabelle, Lo Presti, Domenico, LOPES, Luis, López, Rebeca, Lu, Lu, Luce, Quentin, Lundquist, Jon Paul, Machado Payeras, Allan, Mancarella, Giovanni, Mandat, Dusan, Manning, Bradley C., Manshanden, Julien, Mantsch, Paul, Marafico, Sullivan, Mariazzi, Analisa, Maris, Ioana Codrina, Marsella, Giovanni, Martello, Daniele, Martinelli, Sara, Martínez Bravo, Oscar, Mastrodicasa, Massimo, Mathes, Hermann-Josef, Matthews, James, Matthiae, Giorgio, Mazur, Peter, Medina-Tanco, Gustavo, Melo, Diego, Menshikov, Alexander, Merenda, Kevin-Druis, Michal, Stanislav, Micheletti, Maria Isabel, Miramonti, Lino, Mollerach, Silvia, Montanet, François, Morello, Carlo, Mostafa, Miguel, Müller, Ana L., Muller, Marcio Aparecido, Mulrey, Katharine, Mussa, Roberto, Muzio, Marco Stein, Namasaka, Wilson M., Nasr-Esfahani, Alina, Nellen, Lukas, Niculescu-Oglinzanu, Mihai, Niechciol, Marcus, Nitz, Dave, Nosek, Dalibor, Novotný, Vladimír, Nozka, Libor, Nucita, Achille, Nunez, Luis A., Palatka, Miroslav, Pallotta, Juan, Papenbreer, Philipp, Parente, Gonzalo, Parra, Alejandra, Pawlowsky, Jannis, Pech, Miroslav, Pedreira, Francisco, Pękala, Jan, Pelayo, Rodrigo, Peña-Rodríguez, Jesús, Pereira Martins, Edyvania Emily, Perez Armand, Johnnier, Pérez Bertolli, Carmina, Perlin, Matías, Perrone, Lorenzo, Petrera, Sergio, Pierog, Tanguy, Pimenta, Mário, Pirronello, Valerio, Platino, Manuel, Pont, Bjarni, Pothast, Mart, Privitera, Paolo, Prouza, Michael, Puyleart, Andrew, Querchfeld, Sven, Rautenberg, Julian, Ravignani, Diego, Reininghaus, Maximilian, Ridky, Jan, Riehn, Felix, Risse, Markus, Rizi, Vincenzo, Rodrigues de Carvalho, Washington, Rodriguez Rojo, Jorge Rubén, Roncoroni, Matías J., Rossoni, Simone, Roth, Markus, Roulet, Esteban, Rovero, Adrian, Ruehl, Philip, Saftoiu, Alexandra, Salamida, Francesco, Salazar, Humberto Ibarguen, Salina, Gaetano, Sanabria Gomez, Jose, Sánchez, Federico Andrés, Santos, Edivaldo Moura, Santos, Eva, Sarazin, Fred, Sarmento, Raul, Sarmiento-Cano, Christian, Sato, Ricardo, Savina, Pierpaolo, Schäfer, Christoph M., Scherini, Viviana, Schieler, Harald, Schimassek, Martin, Schimp, Michael, Schlüter, Felix, Schmidt, David, Scholten, Olaf, Schovanek, Petr, Schröder, Frank G., Schröder, Sonja, Schulte, Josina, Sciutto, Sergio, Scornavacche, Marina, Segreto, Alberto, Sehgal, Srijan, Shellard, Ronald C., Sigl, Guenter, Silli, Gaia, Sima, Octavian, Smida, Radomir, Sommers, Paul, Soriano, Jorge F., Souchard, Julien, Squartini, Ruben, Stadelmaier, Maximilian, Stanca, Denis, Stanič, Samo, Stasielak, Jaroslaw, Stassi, Patrick, Streich, Alexander, Suárez-Durán, Mauricio, Sudholz, Tristan, Suomijarvi, Tiina, Supanitsky, A. Daniel, Szadkowski, Zbigniew, Tapia, Alex, Taricco, Carla, Timmermans, Charles, Tkachenko, Olena, Tobiska, Petr, Todero Peixoto, Carlos J., Tomé, Bernardo, Torrès, Zoé, Travaini, Andres, Travnicek, Petr, Trimarelli, Caterina, Tueros, Matias, Ulrich, Ralf, Unger, Michael, Vaclavek, Lukáš, Vacula, Martin, Valdés Galicia, Jose F., Valore, Laura, Varela, Enrique, Vásquez-Ramírez, Adriana, Veberic, Darko, Ventura, Cynthia, Vergara Quispe, Indira D., Verzi, Valerio, Vicha, Jakub, Vink, Jacco, Vorobiov, Serguei, Wahlberg, Hernan, Watanabe, Clara Keiko Oliveira, Watson, Alan, Weber, Marc, Weindl, Andreas, Wiencke, Lawrence, Wilczyński, Henryk, Wirtz, Marcus, Wittkowski, David, Wundheiler, Brian, Yushkov, Alexey, Zapparrata, Orazio, Zas, Enrique, Zavrtanik, Danilo, Zavrtanik, Marko, and Zehrer, Lukas
Subjects: Physics, Pierre Auger Observatory, Astronomy, Astrophysics, Galactic plane, Mass composition, Threshold energy, Distribution (mathematics), Experimental High Energy Physics, Sensitivity (control systems), High Energy Physics, ddc:620, Anisotropy, Hybrid data, Engineering & allied operations
Abstract: We test the hypothesis of an anisotropy laying along the galactic plane which depends on the mass of primary cosmic-rays. The sensitivity to primary mass is provided by the depth of shower maximum, $X_\text{max}$, from hybrid events measured at the Pierre Auger Observatory. The 14 years of available data are split into on- and off-plane regions using the galactic latitude of each event to form two distributions in $X_\text{max}$, which are compared using the Anderson-Darling 2-samples test. A scan over a subset of the data is used to select an optimal threshold energy of $10^{18.7}$ eV and a galactic latitude splitting at $|b| = 30^\circ$, which are then set as a prescription for the remaining data. With these thresholds, the distribution of $X_\text{max}$ from the on-plane region is found to have a $9.1 \pm 1.6^{+2.1}_{-2.2}$ g/cm$^{2}$ shallower mean and a $5.9\pm2.1^{+3.5}_{-2.5}$ g/cm$^{2}$ narrower width than that of the off-plane region. These differences are as such to indicate that the mean mass of primary particles arriving from the on-plane region is greater than that of those coming from the off-plane region. Monte-Carlo studies yield a $4.4\,\sigma$ post-penalization statistical significance for the independent data. Including the scanned data results in a $4.9^{+1.4}_{-1.5}\,\sigma$ post-penalization statistical significance, where the uncertainties are of systematic origin. Accounting for systematic uncertainties leads to an indication for anisotropy in mass composition above $10^{18.7}$ eV at a confidence level of $3.3\,\sigma$. The anisotropy is observed independently at each of the four fluorescence telescope sites. Interpretations of possible causes of the observed effect are discussed.
Published: 2022
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43. A tau scenario application to a search for upward-going showers with the Fluorescence Detector of the Pierre Auger Observatory

Author: Pierre Auger Collaboration, Caracas, Ioana Alexandra, Abreu, Pedro, Aglietta, Marco, Albury, Justin M., Allekotte, Ingomar, Almela, Alejandro, Alvarez-Muniz, Jaime, Alves Batista, Rafael, Anastasi, Gioacchino Alex, Anchordoqui, Luis A., Andrada, Belén, Andringa, Sofia, Aramo, Carla, Araújo Ferreira, Paulo Ricardo, Arteaga Velazquez, Juan Carlos, Asorey, Hernán Gonzalo, Assis, Pedro, Avila, Gualberto, Badescu, Alina Mihaela, Bakalova, Alena, Balaceanu, Alexandru, Barbato, Felicia, Barreira Luz, Ricardo Jorge, Becker, Karl-Heinz, Bellido, Jose A., Berat, Corinne, Bertaina, Mario Edoardo, Bertou, Xavier, Biermann, Peter L., Binet, Virginia, Bismark, Kathrin, Bister, Teresa, Biteau, Jonathan, Blazek, Jiri, Bleve, Carla, Bohacova, Martina, boncioli, denise, Bonifazi, Carla, Bonneau Arbeletche, Luan, Borodai, Nataliia, Botti, Ana Martina, Brack, Jeffrey, Bretz, Thomas, Brichetto Orchera, P. Gabriel, Briechle, Florian Lukas, Buchholz, Peter, Bueno, Antonio, Buitink, Stijn, Buscemi, Mario, Büsken, Max, Caballero-Mora, Karen S., Caccianiga, Lorenzo, Canfora, Fabrizia, Caracas, Ioana, Carceller, Juan Miguel, Caruso, Rossella, Castellina, Antonella, Catalani, Fernando, Cataldi, Gabriella, Cazon, Lorenzo, Cerda, Marcos, Chinellato, Jose Augusto, Chudoba, Jiri, Chytka, Ladislav, Clay, Roger W., Cobos Cerutti, Agustín, Colalillo, Roberta, Coleman, Alan, Coluccia, Maria Rita, Conceição, Rúben, Condorelli, Antonio, Consolati, Giovanni, Contreras, Fernando, Convenga, Fabio, Correia dos Santos, Diego, Covault, Corbin, Dasso, Sergio, Daumiller, Kai, Dawson, Bruce R., Day, Jarryd A., Almeida, Rogerio M. de, Jesús, Joaquín de, Jong, Sijbrand J. de, De Mauro, Giuseppe, Mello Neto, João de, De Mitri, Ivan, Oliveira, Jaime de, Oliveira Franco, Danelise de, Palma, Francesco de, Souza, Vitor de, De Vito, Emanuele, Río, Mariano del, Deligny, Olivier, Deval, Luca, Matteo, Armando di, Dobrigkeit, Carola, D'Olivo, Juan Carlos, Domingues Mendes, Luis Miguel, Anjos, Rita dos, Santos, Diego dos, Dova, Maria Teresa, Ebr, Jan, Engel, Ralph, Epicoco, Italo, Erdmann, Martin, Escobar, Carlos O., Etchegoyen, Alberto, Falcke, Heino, Farmer, John, Farrar, Glennys R., Fauth, Anderson, Fazzini, Norberto, Feldbusch, Fridtjof, Fenu, Francesco, Fick, Brian, Figueira, Juan Manuel, Filipcic, Andrej, Fitoussi, Thomas, Fodran, Tomáš, Freire, Martín Miguel, Fujii, Toshihiro, Fuster, Alan, Galea, Cristina, Galelli, Claudio, García, Beatriz, García Vegas, Adrianna Luz, Gemmeke, Hartmut, Gesualdi, Flavia, Gherghel-Lascu, Alexandru, Ghia, Piera Luisa, GIACCARI, Ugo, Giammarchi, Marco, Glombitza, Jonas, Gobbi, Fabian, Gollan, Fernando, Golup, Geraldina, Gómez Berisso, Mariano, Gómez Vitale, Primo F., Gongora, Juan Pablo, González, Juan Manuel, Gonzalez, Nicolas Martin, Goos, Isabel, Gora, Dariusz, Gorgi, Alessio, Gottowik, Marvin, Grubb, Trent D., Guarino, Fausto, Guedes, Germano, Guido, Eleonora, Hahn, Steffen, Hamal, Petr, Hampel, Matías Rolf, Hansen, Patricia María, Harari, Diego, Harvey, Violet M., Haungs, Andreas, Hebbeker, Thomas, Heck, Dieter, Hill, Gary C., Hojvat, Carlos, Hörandel, Jörg, Horvath, Pavel, Hrabovsky, Miroslav, Huege, Tim, Insolia, Antonio, Isar, Paula Gina, Janecek, Petr, Johnsen, Jeffrey A., Juryšek, Jakub, Kääpä, Alex, Kampert, Karl-Heinz, Karastathis, Nikolaos, Keilhauer, Bianca, Kemp, Julian, Khakurdikar, Abha, Kizakke Covilakam, Varada Varma, Klages, Hans, Kleifges, Matthias, Kleinfeller, Jonny, Köpke, Marcel, Kunka, Norbert, Lago, Bruno L., Lang, Rodrigo Guedes, Langner, Niklas, Leigui de Oliveira, Marcelo Augusto, Lenok, Vladimir, Letessier-Selvon, Antoine, Lhenry-Yvon, Isabelle, Lo Presti, Domenico, LOPES, Luis, López, Rebeca, Lu, Lu, Luce, Quentin, Lundquist, Jon Paul, Machado Payeras, Allan, Mancarella, Giovanni, Mandat, Dusan, Manning, Bradley C., Manshanden, Julien, Mantsch, Paul, Marafico, Sullivan, Mariazzi, Analisa, Maris, Ioana Codrina, Marsella, Giovanni, Martello, Daniele, Martinelli, Sara, Martínez Bravo, Oscar, Mastrodicasa, Massimo, Mathes, Hermann-Josef, Matthews, James, Matthiae, Giorgio, Mayotte, Eric, Mazur, Peter, Medina-Tanco, Gustavo, Melo, Diego, Menshikov, Alexander, Merenda, Kevin-Druis, Michal, Stanislav, Micheletti, Maria Isabel, Miramonti, Lino, Mollerach, Silvia, Montanet, François, Morello, Carlo, Mostafa, Miguel, Müller, Ana L., Muller, Marcio Aparecido, Mulrey, Katharine, Mussa, Roberto, Muzio, Marco Stein, Namasaka, Wilson M., Nasr-Esfahani, Alina, Nellen, Lukas, Niculescu-Oglinzanu, Mihai, Niechciol, Marcus, Nitz, Dave, Nosek, Dalibor, Novotný, Vladimír, Nozka, Libor, Nucita, Achille, Nunez, Luis A., Palatka, Miroslav, Pallotta, Juan, Papenbreer, Philipp, Parente, Gonzalo, Parra, Alejandra, Pawlowsky, Jannis, Pech, Miroslav, Pedreira, Francisco, Pękala, Jan, Pelayo, Rodrigo, Peña-Rodríguez, Jesús, Pereira Martins, Edyvania Emily, Perez Armand, Johnnier, Pérez Bertolli, Carmina, Perlin, Matías, Perrone, Lorenzo, Petrera, Sergio, Pierog, Tanguy, Pimenta, Mário, Pirronello, Valerio, Platino, Manuel, Pont, Bjarni, Pothast, Mart, Privitera, Paolo, Prouza, Michael, Puyleart, Andrew, Querchfeld, Sven, Rautenberg, Julian, Ravignani, Diego, Reininghaus, Maximilian, Ridky, Jan, Riehn, Felix, Risse, Markus, Rizi, Vincenzo, Rodrigues de Carvalho, Washington, Rodriguez Rojo, Jorge Rubén, Roncoroni, Matías J., Rossoni, Simone, Roth, Markus, Roulet, Esteban, Rovero, Adrian, Ruehl, Philip, Saftoiu, Alexandra, Salamida, Francesco, Salazar, Humberto Ibarguen, Salina, Gaetano, Sanabria Gomez, Jose, Sánchez, Federico Andrés, Santos, Edivaldo Moura, Santos, Eva, Sarazin, Fred, Sarmento, Raul, Sarmiento-Cano, Christian, Sato, Ricardo, Savina, Pierpaolo, Schäfer, Christoph M., Scherini, Viviana, Schieler, Harald, Schimassek, Martin, Schimp, Michael, Schlüter, Felix, Schmidt, David, Scholten, Olaf, Schovanek, Petr, Schröder, Frank G., Schröder, Sonja, Schulte, Josina, Sciutto, Sergio, Scornavacche, Marina, Segreto, Alberto, Sehgal, Srijan, Shellard, Ronald C., Sigl, Guenter, Silli, Gaia, Sima, Octavian, Smida, Radomir, Sommers, Paul, Soriano, Jorge F., Souchard, Julien, Squartini, Ruben, Stadelmaier, Maximilian, Stanca, Denis, Stanič, Samo, Stasielak, Jaroslaw, Stassi, Patrick, Streich, Alexander, Suárez-Durán, Mauricio, Sudholz, Tristan, Suomijarvi, Tiina, Supanitsky, A. Daniel, Szadkowski, Zbigniew, Tapia, Alex, Taricco, Carla, Timmermans, Charles, Tkachenko, Olena, Tobiska, Petr, Todero Peixoto, Carlos J., Tomé, Bernardo, Torrès, Zoé, Travaini, Andres, Travnicek, Petr, Trimarelli, Caterina, Tueros, Matias, Ulrich, Ralf, Unger, Michael, Vaclavek, Lukáš, Vacula, Martin, Valdés Galicia, Jose F., Valore, Laura, Varela, Enrique, Vásquez-Ramírez, Adriana, Veberic, Darko, Ventura, Cynthia, Vergara Quispe, Indira D., Verzi, Valerio, Vicha, Jakub, Vink, Jacco, Vorobiov, Serguei, Wahlberg, Hernan, Watanabe, Clara Keiko Oliveira, Watson, Alan, Weber, Marc, Weindl, Andreas, Wiencke, Lawrence, Wilczyński, Henryk, Wirtz, Marcus, Wittkowski, David, Wundheiler, Brian, Yushkov, Alexey, Zapparrata, Orazio, Zas, Enrique, Zavrtanik, Danilo, Zavrtanik, Marko, and Zehrer, Lukas
Subjects: Pierre Auger Observatory, Physics, Astronomy, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Flux, Astrophysics, Spectral line, Path length, Experimental High Energy Physics, High Energy Physics::Experiment, High Energy Physics, ddc:620, Engineering & allied operations, Energy (signal processing), Intensity (heat transfer), Zenith
Abstract: Recent observations of two coherent radio pulses with the ANITA detector can be interpreted as steeply upward-going cosmic-ray showers with energies of a few tenths of an EeV and remain unexplained. The Pierre Auger Observatory has a large exposure to such upward propagating shower-like events, and has used 14 years of its Fluorescence Detector (FD) data to perform a generic search for such events with elevation angles greater than 20$^\circ$ from the horizon. Here this search is recast to constrain models generating high energy $\tau$-leptons. For maximal flexibility, only the propagation, decay, and interactions of $\tau$-leptons are treated in this analysis, meaning that the results are independent of the $\tau$-production scenario. This treatment allows for the application of these results to the wide range of models producing $\tau$-leptons that have been proposed to describe the "anomalous" ANITA events. The goal of this study is accomplished by generating $\tau$-leptons within the Earth and its atmosphere with an intensity dependent on the media density. The zenith angle, location and calorimetric energy of any resulting $\tau$-induced air showers are then used to calculate the exposure of the FD of the Pierre Auger Observatory to $\tau$ primaries. Differential limits as low as $10^{-9}$GeV s$^{-1}$cm$^{-2}$sr$^{-1}$ to the flux of $\tau$-leptons produced with less than a 50 km path length below the Earth's surface are reported for several zenith angle ranges and primary energy spectra. Full exposure and sensitivity information is provided, facilitating the application of these results to different $\tau$-lepton production models.
Published: 2022
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44. Universality of the muon component of extensive air showers

Author: Cazon, Lorenzo, Conceição, Rúben, and Riehn, Felix
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract: In extensive air shower experiments, the number of muons crossing a detector at a given position, as well as their arrival time, arrival direction, and energy, are determined by a more fundamental 3-dimensional distribution linked to the hadronic core of the shower. Muons are produced high up in the atmosphere after the decay of mesons in the hadronic cascade. The distributions of production depth, energy, and transverse momentum of muons are enough to fully predict the muon component of air showers in any particular observational condition. By using air-shower simulations with the state-of-the-art hadronic interaction models, the mentioned distributions at production are analyzed as a function of zenith angle, primary mass, and hadronic interaction model, and their level of universality is studied and assessed in an exhaustive manner for the first time.
Published: 2023
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45. UHECR arrival directions in the latest data from the original Auger and TA surface detectors and nearby galaxies

Author: di Matteo, Armando, primary, Anchordoqui, Luis A., additional, Bister, Teresa, additional, Biteau, Jonathan, additional, Caccianiga, Lorenzo, additional, de Almeida, Rogerio M., additional, Deligny, Olivier, additional, GIACCARI, Ugo, additional, Harari, Diego, additional, Kim, Jihyun, additional, Kuznetsov, Mikhail, additional, Maris, Ioana Codrina, additional, Rubtsov, Grigory, additional, Tinyakov, Petr, additional, Troitsky, Sergey, additional, Urban, Federico, additional, Abreu, Pedro, additional, Aglietta, Marco, additional, Albury, Justin M., additional, Allekotte, Ingomar, additional, Almela, Alejandro, additional, Alvarez-Muniz, Jaime, additional, Alves Batista, Rafael, additional, Anastasi, Gioacchino Alex, additional, Andrada, Belén, additional, Andringa, Sofia, additional, Aramo, Carla, additional, Araújo Ferreira, Paulo Ricardo, additional, Arteaga Velazquez, Juan Carlos, additional, Asorey, Hernán Gonzalo, additional, Assis, Pedro, additional, Avila, Gualberto, additional, Badescu, Alina Mihaela, additional, Bakalova, Alena, additional, Balaceanu, Alexandru, additional, Barbato, Felicia, additional, Barreira Luz, Ricardo Jorge, additional, Becker, Karl-Heinz, additional, Bellido, Jose A., additional, Berat, Corinne, additional, Bertaina, Mario Edoardo, additional, Bertou, Xavier, additional, Biermann, Peter L., additional, Binet, Virginia, additional, Bismark, Kathrin, additional, Blazek, Jiri, additional, Bleve, Carla, additional, Bohacova, Martina, additional, Boncioli, Denise, additional, Bonifazi, Carla, additional, Bonneau Arbeletche, Luan, additional, Borodai, Nataliia, additional, Botti, Ana Martina, additional, Brack, Jeffrey, additional, Bretz, Thomas, additional, Brichetto Orchera, P. Gabriel, additional, Briechle, Florian Lukas, additional, Buchholz, Peter, additional, Bueno, Antonio, additional, Buitink, Stijn, additional, Buscemi, Mario, additional, Büsken, Max, additional, Caballero-Mora, Karen S., additional, Canfora, Fabrizia, additional, Caracas, Ioana, additional, Carceller, Juan Miguel, additional, Caruso, Rossella, additional, Castellina, Antonella, additional, Catalani, Fernando, additional, Cataldi, Gabriella, additional, Cazon, Lorenzo, additional, Cerda, Marcos, additional, Chinellato, Jose Augusto, additional, Chudoba, Jiří, additional, Chytka, Ladislav, additional, Clay, Roger W, additional, Cobos Cerutti, Agustín, additional, Colalillo, Roberta, additional, Coleman, Alan, additional, Coluccia, Maria Rita, additional, Conceição, Rúben, additional, Condorelli, Antonio, additional, Consolati, Giovanni, additional, Contreras, Fernando, additional, Convenga, Fabio, additional, Correia dos Santos, Diego, additional, Covault, Corbin, additional, Dasso, Sergio, additional, Daumiller, Kai, additional, Dawson, Bruce R., additional, Day, Jarryd A., additional, de Jesús, Joaquín, additional, de Jong, Sijbrand J., additional, De Mauro, Giuseppe, additional, de Mello Neto, João, additional, De Mitri, Ivan, additional, de Oliveira, Jaime, additional, de Oliveira Franco, Danelise, additional, de Palma, Francesco, additional, de Souza, Vitor, additional, De Vito, Emanuele, additional, del Río, Mariano, additional, Deval, Luca, additional, Dobrigkeit, Carola, additional, D'Olivo, Juan Carlos, additional, Domingues Mendes, Luis Miguel, additional, dos Anjos, Rita Cassia, additional, dos Santos, Diego, additional, Dova, Maria Teresa, additional, Ebr, Jan, additional, Engel, Ralph, additional, Epicoco, Italo, additional, Erdmann, Martin, additional, Escobar, Carlos O., additional, Etchegoyen, Alberto, additional, Falcke, Heino, additional, Farmer, John, additional, Farrar, Glennys R., additional, Fauth, Anderson, additional, Fazzini, Norberto, additional, Feldbusch, Fridtjof, additional, Fenu, Francesco, additional, Fick, Brian, additional, Figueira, Juan Manuel, additional, Filipcic, Andrej, additional, Fitoussi, Thomas, additional, Fodran, Tomáš, additional, Freire, Martín Miguel, additional, Fuster, Alan, additional, Galea, Cristina, additional, Galelli, Claudio, additional, García, Beatriz, additional, García Vegas, Adrianna Luz, additional, Gemmeke, Hartmut, additional, Gesualdi, Flavia, additional, Gherghel-Lascu, Alexandru, additional, Ghia, Piera Luisa, additional, Giammarchi, Marco, additional, Glombitza, Jonas, additional, Gobbi, Fabian, additional, Gollan, Fernando, additional, Golup, Geraldina, additional, Gómez Berisso, Mariano, additional, Gómez Vitale, Primo F., additional, Gongora, Juan Pablo, additional, González, Juan Manuel, additional, Gonzalez, Nicolas Martin, additional, Goos, Isabel, additional, Gora, Dariusz, additional, Gorgi, Alessio, additional, Gottowik, Marvin, additional, Grubb, Trent D., additional, Guarino, Fausto, additional, Guedes, Germano, additional, Guido, Eleonora, additional, Hahn, Steffen, additional, Hamal, Petr, additional, Hampel, Matías Rolf, additional, Hansen, Patricia María, additional, Harvey, Violet M., additional, Haungs, Andreas, additional, Hebbeker, Thomas, additional, Heck, Dieter, additional, Hill, Gary C., additional, Hojvat, Carlos, additional, Hörandel, Jörg R., additional, Horvath, Pavel, additional, Hrabovsky, Miroslav, additional, Huege, Tim, additional, Insolia, Antonio, additional, Isar, Paula Gina, additional, Janecek, Petr, additional, Johnsen, Jeffrey A., additional, Jurysek, Jakub, additional, Kääpä, Alex, additional, Kampert, Karl-Heinz, additional, Karastathis, Nikolaos, additional, Keilhauer, Bianca, additional, Kemp, Julian, additional, Khakurdikar, Abha, additional, Kizakke Covilakam, Varada Varma, additional, Klages, Hans, additional, Kleifges, Matthias, additional, Kleinfeller, Jonny, additional, Köpke, Marcel, additional, Kunka, Norbert, additional, Lago, Bruno L., additional, Lang, Rodrigo Guedes, additional, Langner, Niklas, additional, Leigui de Oliveira, Marcelo Augusto, additional, Lenok, Vladimir, additional, Letessier-Selvon, Antoine, additional, Lhenry-Yvon, Isabelle, additional, Lo Presti, Domenico, additional, LOPES, Luis, additional, López, Rebeca, additional, Lu, Lu, additional, Luce, Quentin, additional, Machado Payeras, Allan, additional, Mancarella, Giovanni, additional, Mandat, Dusan, additional, Manning, Bradley C., additional, Manshanden, Julien, additional, Mantsch, Paul, additional, Marafico, Sullivan, additional, Mariazzi, Analisa, additional, Marsella, Giovanni, additional, Martello, Daniele, additional, Martinelli, Sara, additional, Martínez Bravo, Oscar, additional, Mastrodicasa, Massimo, additional, Mathes, Hermann-Josef, additional, Matthews, James, additional, Matthiae, Giorgio, additional, Mayotte, Eric, additional, Mazur, Peter, additional, Medina-Tanco, Gustavo, additional, Melo, Diego, additional, Menshikov, Alexander, additional, Merenda, Kevin-Druis, additional, Michal, Stanislav, additional, Micheletti, Maria Isabel, additional, Miramonti, Lino, additional, Mollerach, Silvia, additional, Montanet, François, additional, Morello, Carlo, additional, Mostafa, Miguel, additional, Müller, Ana L., additional, Muller, Marcio Aparecido, additional, Mulrey, Katharine, additional, Mussa, Roberto, additional, Muzio, Marco Stein, additional, Namasaka, Wilson M., additional, Nasr-Esfahani, Alina, additional, Nellen, Lukas, additional, Niculescu-Oglinzanu, Mihai, additional, Niechciol, Marcus, additional, Nitz, Dave, additional, Nosek, Dalibor, additional, Novotný, Vladimír, additional, Nozka, Libor, additional, Nucita, Achille, additional, Nunez, Luis A., additional, Palatka, Miroslav, additional, Pallotta, Juan, additional, Papenbreer, Philipp, additional, Parente, Gonzalo, additional, Parra, Alejandra, additional, Pawlowsky, Jannis, additional, Pech, Miroslav, additional, Pedreira, Francisco, additional, Pękala, Jan, additional, Pelayo, Rodrigo, additional, Peña-Rodríguez, Jesús, additional, Pereira Martins, Edyvania Emily, additional, Perez Armand, Johnnier, additional, Pérez Bertolli, Carmina, additional, Perlin, Matías, additional, Perrone, Lorenzo, additional, Petrera, Sergio, additional, Pierog, Tanguy, additional, Pimenta, Mário, additional, Pirronello, Valerio, additional, Platino, Manuel, additional, Pont, Bjarni, additional, Pothast, Mart, additional, Privitera, Paolo, additional, Prouza, Michael, additional, Puyleart, Andrew, additional, Querchfeld, Sven, additional, Rautenberg, Julian, additional, Ravignani, Diego, additional, Reininghaus, Maximilian, additional, Ridky, Jan, additional, Riehn, Felix, additional, Risse, Markus, additional, Rizi, Vincenzo, additional, Rodrigues de Carvalho, Washington, additional, Rodriguez Rojo, Jorge Rubén, additional, Roncoroni, Matías J., additional, Rossoni, Simone, additional, Roth, Markus, additional, Roulet, Esteban, additional, Rovero, Adrian, additional, Ruehl, Philip, additional, Saftoiu, Alexandra, additional, Salamida, Francesco, additional, Salazar, Humberto Ibarguen, additional, Salina, Gaetano, additional, Sanabria Gomez, Jose, additional, Sánchez, Federico Andrés, additional, Santos, Edivaldo Moura, additional, Santos, Eva, additional, Sarazin, Fred, additional, Sarmento, Raul, additional, Sarmiento-Cano, Christian, additional, Sato, Ricardo, additional, Savina, Pierpaolo, additional, Schäfer, Christoph M., additional, Scherini, Viviana, additional, Schieler, Harald, additional, Schimassek, Martin, additional, Schimp, Michael, additional, Schlüter, Felix, additional, Schmidt, David, additional, Scholten, Olaf, additional, Schovanek, Petr, additional, Schröder, Frank G., additional, Schröder, Sonja, additional, Schulte, Josina, additional, Sciutto, Sergio, additional, Scornavacche, Marina, additional, Segreto, Alberto, additional, Sehgal, Srijan, additional, Shellard, Ronald C., additional, Sigl, Guenter, additional, Silli, Gaia, additional, Sima, Octavian, additional, Smida, Radomir, additional, Sommers, Paul, additional, Soriano, Jorge F., additional, Souchard, Julien, additional, Squartini, Ruben, additional, Stadelmaier, Maximilian, additional, Stanca, Denis, additional, Stanič, Samo, additional, Stasielak, Jaroslaw, additional, Stassi, Patrick, additional, Streich, Alexander, additional, Suárez-Durán, Mauricio, additional, Sudholz, Tristan, additional, Suomijarvi, Tiina, additional, Supanitsky, A. Daniel, additional, Szadkowski, Zbigniew, additional, Tapia, Alex, additional, Taricco, Carla, additional, Timmermans, Charles, additional, Tkachenko, Olena, additional, Tobiska, Petr, additional, Todero Peixoto, Carlos J., additional, Tomé, Bernardo, additional, Torrès, Zoé, additional, Travaini, Andres, additional, Travnicek, Petr, additional, Trimarelli, Caterina, additional, Tueros, Matías, additional, Ulrich, Ralf, additional, Unger, Michael, additional, Vaclavek, Lukáš, additional, Vacula, Martin, additional, Valdés Galicia, Jose F., additional, Valore, Laura, additional, Varela, Enrique, additional, Vásquez-Ramírez, Adriana, additional, Veberic, Darko, additional, Ventura, Cynthia, additional, Vergara Quispe, Indira D., additional, Verzi, Valerio, additional, Vicha, Jakub, additional, Vink, Jacco, additional, Vorobiov, Serguei, additional, Wahlberg, Hernan, additional, Watanabe, Clara Keiko Oliveira, additional, Watson, Alan, additional, Weber, Marc, additional, Weindl, Andreas, additional, Wiencke, Lawrence, additional, Wilczyński, Henryk, additional, Wirtz, Marcus, additional, Wittkowski, David, additional, Wundheiler, Brian, additional, Yushkov, Alexey, additional, Zapparrata, Orazio, additional, Zas, Enrique, additional, Zavrtanik, Danilo, additional, Zavrtanik, Marko, additional, Zehrer, Lukas, additional, Abbasi, Rasha, additional, Abu-Zayyad, Tareq, additional, Allen, Monica, additional, Arai, Yuto, additional, Arimura, Ryuhei, additional, Barcikowski, Elliott, additional, Belz, John, additional, Bergman, Douglas, additional, Blake, Samuel, additional, Cady, Robert, additional, Cheon, ByongGu, additional, Chiba, Jyunsei, additional, Chikawa, Michiyuki, additional, Fujii, Toshihiro, additional, Fujisue, Kozo, additional, Fujita, Keitaro, additional, Fujiwara, Ryota, additional, Fukushima, Masaki, additional, Fukushima, Ryota, additional, Furlich, Greg, additional, Gonzalez, Ricardo, additional, Hanlon, William, additional, Hayashi, Motoki, additional, Hayashida, Naoaki, additional, Hibino, Kinya, additional, Higuchi, Ryo, additional, Honda, Ken, additional, Ikeda, Daisuke, additional, Inadomi, Taichi, additional, Inoue, Naoya, additional, Ishii, Takaaki, additional, Ito, Hirotaka, additional, Ivanov, Dmitri, additional, Iwakura, Hirokazu, additional, Iwasaki, Aoi, additional, Jeong, Hyoming, additional, Jeong, Soomin, additional, Jui, Charlie, additional, Kadota, Kenichi, additional, Kakimoto, Fumio, additional, Kalashev, Oleg, additional, Kasahara, Katsuaki, additional, Kasami, Saori, additional, Kawai, Hideyuki, additional, Kawakami, Saburo, additional, Kawana, Shingo, additional, Kawata, Katsumasa, additional, Kharuk, Ivan, additional, Kido, Eiji, additional, Kim, HangBae, additional, Kim, Jihee, additional, Kim, Min Hyo, additional, Kim, Sang Woo, additional, Kimura, Yusuke, additional, Kishigami, Shoichi, additional, Kubota, Yuto, additional, Kurisu, Shinnosuke, additional, Kuzmin, Vladim, additional, Kwon, Youngjoon, additional, Lee, Kwangho, additional, Lubsandorzhiev, BayarJon Paul, additional, Lundquist, Jon Paul, additional, Machida, Kazuhiro, additional, Matsumiya, Hiroyuki, additional, Matsuyama, Toshio, additional, Matthews, John, additional, Mayta, Rosa, additional, Minamino, Mayuko, additional, Mukai, Keijiro, additional, Myers, Isaac, additional, Nagataki, Shigehiro, additional, Nakai, Kei, additional, Nakamura, Ryo, additional, Nakamura, Toru, additional, Nakamura, Tomoyuki, additional, Nakamura, Yuya, additional, Nakazawa, Arata, additional, Nishio, Eiji, additional, Nonaka, Toshiyuki, additional, Oda, Hiroyuki, additional, Ogio, Shoichi, additional, Ohnishi, Munehiro, additional, Ohoka, Hideyuki, additional, Oku, Yuya, additional, Okuda, Takeshi, additional, Omura, Yugo, additional, Ono, Masaomi, additional, Onogi, Ryota, additional, Oshima, Akitoshi, additional, OZAWA, Shunsuke, additional, Park, Il Hung, additional, Potts, Matt, additional, Pshirkov, Maxim, additional, Remington, Jackson, additional, Rodriguez, Doug, additional, Ryu, Dongsu, additional, Sagawa, Hiroyuki, additional, Sahara, Ryosuke, additional, Saito, Yasunori, additional, Sakaki, Naoto, additional, Sako, Takashi, additional, Sakurai, Nobuyuki, additional, Sano, Kengo, additional, Sato, Koki, additional, Seki, Terutsugu, additional, Sekino, Koichi, additional, Shah, Priti, additional, Shibasaki, Yuma, additional, Shibata, Fumiya, additional, Shibata, Norimichi, additional, Shibata, Tatsunobu, additional, Shimodaira, Hideaki, additional, Shin, Bokkyun, additional, Shin, Heungsu, additional, Shinto, Daiki, additional, Smith, Jeremy, additional, Sokolsky, Pierre, additional, Sone, Naohiro, additional, Stokes, Ben, additional, Stroman, Tom, additional, Takagi, Yoshinori, additional, Takahashi, Yuichi, additional, Takamura, Mai, additional, Takeda, Masahiro, additional, Takeishi, Ryuji, additional, Taketa, Akimichi, additional, Takita, Masato, additional, Tameda, Yuichiro, additional, Tanaka, Hideki, additional, Tanaka, Koichi, additional, Tanaka, Manobu, additional, Tanoue, Yuta, additional, Thomas, Stanton, additional, Thomson, Gordon, additional, Tkachev, Igor, additional, Tokuno, Hisono, additional, Tomida, Taka, additional, Tsuda, Ryosuke, additional, Tsunesada, Yoshiki, additional, Uchihori, Yukio, additional, Udo, Shigeharu, additional, Uehama, Takafumi, additional, Wong, Tiffany, additional, Yada, Kohei, additional, Yamamoto, Mashu, additional, Yamazaki, Katsuya, additional, Yang, Jongmann, additional, Yashiro, Kenta, additional, Yoshida, Fugo, additional, Yoshioka, Tsubasa, additional, Zhezher, Yana, additional, and Zundel, Zach, additional
Published: 2021
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46. Simulating the performance of the Southern Wide-view Gamma-ray Observatory

Author: Schoorlemmer, Harm, primary, Conceição, Rúben, additional, and Smith, Andrew James, additional
Published: 2021
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47. Gamma/hadron discrimination using a small-WCD with four PMTs

Author: Conceição, Rúben, primary, Assis, Pedro, additional, Assunção, Filipe, additional, Bakalova, Alena, additional, Barres de Almeida, Ulisses, additional, Roque Bom, Clécio, additional, Correia, João, additional, De Angelis, Alessandro, additional, Dias, Luciana Olivia, additional, Serrano González, Borja, additional, Guillén, Alberto, additional, La Mura, Giovanni, additional, Lourenço, Nuno, additional, Machado, Penousal, additional, Marques, Sara, additional, Mendes, Luis, additional, Pimenta, Mário, additional, Shellard, Ronald, additional, Tomé, Bernardo, additional, and Vicha, Jakub, additional
Published: 2021
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48. New methods to reconstruct Xmax and the energy of gamma-ray air showers with high accuracy in large wide-field observatories

Author: Conceição, Rúben, primary, Peres, Laura, additional, Pimenta, Mário, additional, and Tomé, Bernardo, additional
Published: 2021
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49. Bayesian Deep Learning for Shower Parameter Reconstruction in Water Cherenkov Detectors

Author: Bom, Clecio R., primary, Dias, Luciana Olivia, additional, Conceição, Rúben, additional, Tomé, Bernardo, additional, de Almeida, Ulisses Barres, additional, Moraes, Arthur, additional, Pimenta, Mário, additional, Shellard, Ronald, additional, and de Albuquerque, Márcio Portes, additional
Published: 2021
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50. On the muon scale of air showers and its application to the AGASA data

Author: Gesualdi, Flavia, primary, Dembinski, Hans, additional, Shinozaki, Kenji, additional, Supanitsky, Daniel A., additional, Pierog, Tanguy, additional, Cazon, Lorenzo, additional, Soldin, Dennis, additional, and Conceição, Rúben, additional
Published: 2021
Full Text: View/download PDF

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