Latest Results from the Searches for Photons at the Highest Energies with the Pierre Auger Observatory
Year: 2025
Type: conference-paper
Abstract: The Pierre Auger Observatory is the most sensitive detector to primary photons with energies above $0.2$ EeV providing unprecedented exposure to ultra-high-energy (UHE) cosmic rays and specifically to UHE photons. The Observatory measures extensive air showers using a hybrid technique that combines a fluorescence detector (FD) with a ground array of particle detectors (SD). The signatures of a photon-induced air shower are a larger atmospheric depth of the shower maximum ($X_\mathrm{max}$) and a steeper lateral distribution function, along with a lower number of muons with respect to the bulk of hadron-induced background. Using observables measured by the FD and SD, various photon searches in different energy bands are performed. These efforts have produced some of the most stringent upper limits on the diffuse fluxes of UHE photons. These limits place significant constraints on current models for the origin of UHE cosmic rays, highlighting the leading role of the Observatory in multimessenger astronomy at the highest energies. In this contribution, an overview of current activities related to the search for UHE photons is shown, using more than 15 years of data from the Pierre Auger Observatory. The latest results of the searches for diffuse fluxes of photons will be presented, as well as follow-up searches for UHE photons in association with transient events, such as gravitational wave events, will be summarized. Future perspectives, in light of the ongoing AugerPrime detector upgrade, will also be discussed, which aim to further enhance the Observatory's sensitivity to photons at the highest energies.
DOI: 10.22323/1.501.0965
Authors: Pierpaolo Savina, Adila Abdul Halim, Pedro Abreu, Marco Aglietta, Ingomar Allekotte, Kevin Almeida Cheminant, Alejandro Almela, Roberto Aloisio, Jaime Alvarez-Muñiz, Antonio Ambrosone, Juan Ammerman Yebra, Gioacchino Alex Anastasi, Luis A. Anchordoqui, Belén Andrada, Luciana Andrade Dourado, Sofia Andringa, Lorenzo Apollonio, Carla Aramo, Enrico Arnone, Juan Carlos Arteaga Velazquez, Pedro Assis, Gualberto Avila, Emanuele Avocone, Alena Bakalova, Felicia Barbato, Adriel Bartz Mocellin, Jose A. Bellido, Corinne Berat, Mario E. Bertaina, Marta Bianciotto, Peter L. Biermann, Virginia Binet, Kathrin Bismark, Teresa Bister, Jonathan Biteau, Jiri Blazek, Johannes Blümer, Martina Bohacova, Denise Boncioli, Carla Bonifazi, Luan Bonneau Arbeletche, Nataliia Borodai, Jeffrey Brack, P. Gabriel Brichetto Orchera, Florian Lukas Briechle, Antonio Bueno, Stijn Buitink, Mario Buscemi, Max Büsken, Anthony Bwembya, Karen S. Caballero-Mora, Sergio Cabana-Freire, Lorenzo Caccianiga, Federico Campuzano, Jorge Caraça-Valente, Rossella Caruso, Antonella Castellina, Fernando Catalani, Gabriella Cataldi, Lorenzo Cazon, Marcos Cerda, Berenika Čermáková, Alessandro Cermenati, Jose Augusto Chinellato, Jiří Chudoba, Ladislav Chytka, Roger W Clay, Agustín Cobos Cerutti, Roberta Colalillo, Rúben Conceição, Giovanni Consolati, Matteo Conte, Fabio Convenga, Diego Correia dos Santos, Pedro J. Costa, Corbin Covault, Markus Cristinziani, Carlo Salvattore Cruz Sanchez, Sergio Dasso, Kai Daumiller, Bruce R. Dawson, Rogerio M. de Almeida, Eric-Teunis de Boone, Beatriz de Errico, Joaquín de Jesús, Sijbrand J. de Jong, João de Mello Neto, Ivan De Mitri, Jaime de Oliveira, Danelise de Oliveira Franco, Francesco de Palma, Vitor de Souza, Emanuele De Vito, Antonino Del Popolo, Olivier Deligny, Nikolas Denner, Luca Deval, Armando di Matteo, Carola Dobrigkeit, Juan Carlos D'Olivo, Luis Miguel Domingues Mendes, Qader Dorosti, Joao dos Anjos, Rita Cassia dos Anjos, Jan Ebr, Fiona H. Ellwanger, Ralph Engel, Italo Epicoco, Martin Erdmann, Alberto Etchegoyen, Carmelo Evoli, Heino Falcke, Glennys R. Farrar, Anderson Fauth, Tim Fehler, Fridtjof Feldbusch, Alexandra Fernandes, Mateo Fernandez, Brian Fick, Juan Manuel Figueira, Paul Filip, Andrej Filipcic, Thomas Fitoussi, Benjamin Flaggs, Tomáš Fodran, Antonio Franco, Milton Freitas, Toshihiro Fujii, Alan Fuster, Cristina Galea, Beatriz Garcia, Chloé Gaudu, Piera Luisa Ghia, Ugo GIACCARI, Fabian Gobbi, Fernando Gollan, Geraldina Golup, Mariano Gómez Berisso, Primo F. Gómez Vitale, Juan Pablo Gongora, Juan Manuel Gonzalez, Nicolas Martin Gonzalez, Dariusz Gora, Alessio Gorgi, Marvin Gottowik, Fausto Guarino, Germano Guedes, Lukas Gülzow, Steffen Hahn, Petr Hamal, Matías Rolf Hampel, Patricia María Hansen, Violet M. Harvey, Andreas Haungs, Thomas Hebbeker, Carlos Hojvat, Jörg Hörandel, Pavel Horvath, Miroslav Hrabovsky, Tim Huege, Antonio Insolia, Paula Gina Isar, Mohamed Ismaiel, Petr Janecek, Vlastimil Jilek, Karl-Heinz Kampert, Bianca Keilhauer, Abha Khakurdikar, Varada Varma Kizakke Covilakam, Hans Klages, Matthias Kleifges, Jelena Köhler, Frederik Krieger, Margita Kubátová, Norbert Kunka, Bruno L. Lago, Niklas Langner, Nicolas Leal, Marcelo Augusto Leigui de Oliveira, Yago Lema-Capeans, Antoine Letessier-Selvon, Isabelle Lhenry-Yvon, Luis LOPES, Jon Paul Lundquist, Manuela Mallamaci, Dusan Mandat, Paul Mantsch, Federico Maria Mariani, Analisa Gabriela Mariazzi, Ioana Codrina Maris, Giovanni Marsella, Daniele Martello, Sara Martinelli, Miguel A. Martins, Hermann-Josef Mathes, James Matthews, Giorgio Matthiae, Eric William Mayotte, Sonja Mayotte, Peter Mazur, Gustavo Medina-Tanco, Janning Meinert, Diego Melo, Alexander Menshikov, Carmen Merx, Stanislav Michal, Maria Isabel Micheletti, Lino Miramonti, Megha Mogarkar, Silvia Mollerach, François Montanet, Leonel Morejon, Katharine Mulrey, Roberto Mussa, Wilson M. Namasaka, Shefali Negi, Lukas Nellen, Khoa Nguyen, Gabriela Nicora, Marcus Niechciol, Dave Nitz, Dalibor Nosek, Alexander Novikov, Vladimír Novotný, Libor Nozka, Achille Nucita, Luis A. Nunez, José Ochoa, Cainã Oliveira, Leo Östman, Miroslav Palatka, Juan Pallotta, Shayoni Panja, Gonzalo Parente, Therese Paulsen, Jannis Pawlowsky, Miroslav Pech, Jan Pękala, Rodrigo Pelayo, Vincent Pelgrims, Luiz Augusto Pereira, Edyvania Emily Pereira Martins, Carmina Pérez Bertolli, Lorenzo Perrone, Sergio Petrera, Camilla Petrucci, Tanguy Pierog, Mário Pimenta, Manuel Platino, Bjarni Pont, Mohsen Pourmohammad Shahvar, Paolo Privitera, Chaitanya Priyadarshi, Michael Prouza, Krzysztof Pytel, Sven Querchfeld, Julian Rautenberg, Diego Ravignani, João Vitor Reginatto Akim, Alex Reuzki, Jan Ridky, Felix Riehn, Markus Risse, Vincenzo Rizi, Ezequiel Rodriguez, Gonzalo Rodriguez Fernandez, Jorge Rubén Rodriguez Rojo, Simone Rossoni, Markus Roth, Esteban Roulet, Adrian Rovero, Alexandra Saftoiu, Mohit Saharan, Francesco Salamida, Humberto Ibarguen Salazar, Gaetano Salina, Pranav Sampathkumar, Nicolas San Martin, Jose Sanabria Gomez, Federico Andrés Sánchez, Edivaldo Moura Santos, Eva Santos, Fred Sarazin, Raul Sarmento, Ricardo Sato, Viviana Scherini, Harald Schieler, Martin Schimassek, Michael Schimp, David Schmidt, Olaf Scholten, Harm Schoorlemmer, Petr Schovanek, Frank G. Schröder, Josina Schulte, Tobias Schulz, Sergio J Sciutto, Marina Scornavacche, Adrian Sedoski, Alberto Segreto, Srijan Sehgal, Shima Ujjani Shivashankara, Guenter Sigl, Katarína Simkova, Frank Simon, Radomir Smida, Paul Sommers, Ruben Squartini, Maximilian Stadelmaier, Samo Stanič, Jaroslaw Stasielak, Patrick Stassi, Simon Strähnz, Maximilian Straub, Tiina Suomijarvi, A. Daniel Supanitsky, Zuzana Svozilikova, Karolina Syrokvas, Zbigniew Szadkowski, Fedor Tairli, Matteo Tambone, Alex Tapia, Carla Taricco, Charles Timmermans, Olena Tkachenko, Petr Tobiska, Carlos J. Todero Peixoto, Bernardo Tomé, Andres Travaini, Petr Travnicek, Matias Jorge Tueros, Michael Unger, Rukije Uzeiroska, Lukáš Vaclavek, Martin Vacula, Igor Vaiman, Jose F. Valdés Galicia, Laura Valore, Pim van Dillen, Enrique Varela, Veronica Vasickova, Adriana Vásquez-Ramírez, Darko Veberic, Indira D. Vergara Quispe, Stef Verpoest, Valerio Verzi, Jakub Vicha, Jacco Vink, Serguei Vorobiov, Jhansi Bhavani Vuta, Clara Keiko Oliveira Watanabe, Alan Watson, Andreas Weindl, Melanie Weitz, Lawrence Wiencke, Henryk Wilczyński, Brian Wundheiler, Baobiao Yue, Alexey Yushkov, Enrique Zas, Danilo Zavrtanik, Marko Zavrtanik
Institutions: Consejo Nacional de Investigaciones Científicas y Técnicas, National University of General San Martín, The University of Adelaide, Balseiro Institute, Bariloche Atomic Centre, National Technological University, Instituto de Tecnologías en Detección y Astropartículas, Pierre Auger Observatory, Comisión Nacional de Energía Atómica, National University of Rosario, Institute of Physics Rosario, Gran Sasso Science Institute, International Center for Advanced Studies, Vrije Universiteit Brussel, Universidade de São Paulo, Instituto de Física La Plata, Universidad Nacional de La Plata, Universidad de Buenos Aires, Institute of Astronomy and Space Physics, Instituto Federal do Rio de Janeiro, Centro Brasileiro de Pesquisas Físicas, Université Libre de Bruxelles, Federal Center for Technological Education Celso Suckow da Fonseca, Institute of Scientific and Technical Research for Defense, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Award: G7378882120
OpenAlex ID: W4414437719
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