A search for ultra-high-energy photons at the Pierre Auger Observatory exploiting air-shower universality

0564877 - FZÚ 2023 RIV IT eng C - Konferenční příspěvek (zahraniční konf.)
Abreu, A. - Aglietta, M. - Albury, J.M. - Bakalová, Alena - Blažek, Jiří - Boháčová, Martina - Chudoba, Jiří - Ebr, Jan - Hamal, Petr - Janeček, Petr - Juryšek, Jakub - Mandát, Dušan - Palatka, Miroslav - Pech, Miroslav - Prouza, Michael - Řídký, Jan - dos Santos, Eva M. Martins - Schovánek, Petr - Tobiška, Petr - Trávníček, Petr - Vícha, Jakub - Yushkov, Alexey … celkem 373 autorů
A search for ultra-high-energy photons at the Pierre Auger Observatory exploiting air-shower universality.
Proceedings of Science. Vol. 395. Trieste: Sissa Medilab srl, 2022, č. článku 373. ISSN 1824-8039.
[International Cosmic Ray Conference /37./. Berlin (DE), 12.07.2021-23.07.2021]
Výzkumná infrastruktura: AUGER-CZ II - 90102
Institucionální podpora: RVO:68378271
Klíčová slova: extensive air showers * muons
Obor OECD: Particles and field physics
https://pos.sissa.it/395/373/pdf

The Pierre Auger Observatory is the most sensitive detector to primary photons with energies above ∼0.2 EeV. It 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 at the shower maximum (Xmax) 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, three photon searches in different energy bands are performed. In particular, between threshold energies of 1-10 EeV, a new analysis technique has been developed by combining the FD-based measurement of Xmax with the SD signal through a parameter related to its muon content, derived from the universality of the air showers.
Trvalý link: https://hdl.handle.net/11104/0336440