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arXiv · 2507.09585

The Giant Radio Array for Neutrino Detection (GRAND) Collaboration -- Contributions to the 39th International Cosmic Ray Conference (ICRC 2025)

Jaime Álvarez-Muñiz·Rafael Alves Batista·Aurélien Benoit-Lévy·Teresa Bister·Martina Bohacova·Mauricio Bustamante·Washington Carvalho Jr.·Yiren Chen·LingMei Cheng·Simon Chiche·Jean-Marc Colley·Pablo Correa·Nicoleta Cucu Laurenciu·Zigao Dai·Rogerio M. de Almeida·Beatriz de Errico·João R. T. de Mello Neto·Krijn D. de Vries·Valentin Decoene·Peter B. Denton·Bohao Duan·Kaikai Duan·Ralph Engel·William Erba·Yizhong Fan·Arsène Ferrière·QuanBu Gou·Junhua Gu·Marion Guelfand·Gang Guo·Jianhua Guo·Yiqing Guo·Claire Guépin·Lukas Gülzow·Andreas Haungs·Matej Havelka·Haoning He·Eric Hivon·Hongbo Hu·Guoyuan Huang·Xiaoyuan Huang·Yan Huang·Tim Huege·Wen Jiang·Sei Kato·Ramesh Koirala·Kumiko Kotera·Jelena Köhler·Bruno L. Lago·Zhisen Lai·Jolan Lavoisier·François Legrand·Antonios Leisos·Rui Li·Xingyu Li·Cheng Liu·Ruoyu Liu·Wei Liu·Pengxiong Ma·Oscar Macías·Frédéric Magnard·Alexandre Marcowith·Olivier Martineau-Huynh·Zack Mason·Thomas McKinley·Paul Minodier·Miguel Mostafá·Kohta Murase·Valentin Niess·Stavros Nonis·Shoichi Ogio·Foteini Oikonomou·Hongwei Pan·Konstantinos Papageorgiou·Tanguy Pierog·Lech W. Piotrowski·Simon Prunet·Clément Prévotat·Xiangli Qian·Markus Roth·Takashi Sako·Sarvesh Shinde·Dániel Szálas-Motesiczky·Szymon Sławiński·Kaoru Takahashi·Xishui Tian·Charles Timmermans·Petr Tobiska·Apostolos Tsirigotis·Matías Tueros·George Vittakis·Vincent Voisin·Hanrui Wang·Jiale Wang·Shen Wang·Xiangyu Wang·Xu Wang·Daming Wei·Feng Wei·Emily Weissling
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Abstract

The Giant Radio Array for Neutrino Detection (GRAND) is an envisioned observatory of ultra-high-energy particles of cosmic origin, with energies in excess of 100 PeV. GRAND uses large surface arrays of antennas to look for the radio emission from extensive air showers that are triggered by the interaction of ultra-high-energy cosmic rays, gamma rays, and neutrinos in the atmosphere or underground. In particular, for ultra-high-energy neutrinos, the future final phase of GRAND aims to be sensitive enough to detect them in spite of their plausibly tiny flux. Three prototype GRAND radio arrays have been in operation since 2023: GRANDProto300, in China, GRAND@Auger, in Argentina, and GRAND@Nan\c{c}ay, in France. Their goals are to field-test the GRAND detection units, understand the radio background to which they are exposed, and develop tools for diagnostic, data gathering, and data analysis. This list of contributions to the 39th International Cosmic Ray Conference (ICRC 2025) presents an overview of GRAND, in its present and future incarnations, and a first look at data collected by GRANDProto300 and GRAND@Auger, including the first cosmic-ray candidates detected by them.

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Jaime Álvarez-Muñiz, Rafael Alves Batista, Aurélien Benoit-Lévy, Teresa Bister, Martina Bohacova, Mauricio Bustamante, Washington Carvalho Jr., Yiren Chen, LingMei Cheng, Simon Chiche, Jean-Marc Colley, Pablo Correa, Nicoleta Cucu Laurenciu, Zigao Dai, Rogerio M. de Almeida, Beatriz de Errico, João R. T. de Mello Neto, Krijn D. de Vries, Valentin Decoene, Peter B. Denton, Bohao Duan, Kaikai Duan, Ralph Engel, William Erba, Yizhong Fan, Arsène Ferrière, QuanBu Gou, Junhua Gu, Marion Guelfand, Gang Guo, Jianhua Guo, Yiqing Guo, Claire Guépin, Lukas Gülzow, Andreas Haungs, Matej Havelka, Haoning He, Eric Hivon, Hongbo Hu, Guoyuan Huang, Xiaoyuan Huang, Yan Huang, Tim Huege, Wen Jiang, Sei Kato, Ramesh Koirala, Kumiko Kotera, Jelena Köhler, Bruno L. Lago, Zhisen Lai, Jolan Lavoisier, François Legrand, Antonios Leisos, Rui Li, Xingyu Li, Cheng Liu, Ruoyu Liu, Wei Liu, Pengxiong Ma, Oscar Macías, Frédéric Magnard, Alexandre Marcowith, Olivier Martineau-Huynh, Zack Mason, Thomas McKinley, Paul Minodier, Miguel Mostafá, Kohta Murase, Valentin Niess, Stavros Nonis, Shoichi Ogio, Foteini Oikonomou, Hongwei Pan, Konstantinos Papageorgiou, Tanguy Pierog, Lech W. Piotrowski, Simon Prunet, Clément Prévotat, Xiangli Qian, Markus Roth, Takashi Sako, Sarvesh Shinde, Dániel Szálas-Motesiczky, Szymon Sławiński, Kaoru Takahashi, Xishui Tian, Charles Timmermans, Petr Tobiska, Apostolos Tsirigotis, Matías Tueros, George Vittakis, Vincent Voisin, Hanrui Wang, Jiale Wang, Shen Wang, Xiangyu Wang, Xu Wang, Daming Wei, Feng Wei, Emily Weissling. 2025-07-13. The Giant Radio Array for Neutrino Detection (GRAND) Collaboration -- Contributions to the 39th International Cosmic Ray Conference (ICRC 2025). https://arxiv.org/abs/2507.09585

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