The energy spectrum of ultra-high energy cosmic rays measured at the Pierre Auger Observatory and the Telescope Array

0578819 - FZÚ 2024 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
Abdul Halim, A. - Abreu, P. - Aglietta, M. - Bergman, D.R. - Deligny, O. - Fenu, F. - Bakalová, Alena - Blažek, Jiří - Boháčová, Martina - Chudoba, Jiří - Ebr, Jan - Hamal, Petr - Janeček, Petr - Juryšek, Jakub - Mandát, Dušan - Müller, Ana Laura - Palatka, Miroslav - Pech, Miroslav - Prouza, Michael - Řídký, Jan - dos Santos, Eva M. Martins - Schovánek, Petr - Stadelmaier, Maximilian Klaus - Tobiška, Petr - Trávníček, Petr - Vícha, Jakub - Yushkov, Alexey … celkem 535 autorů
The energy spectrum of ultra-high energy cosmic rays measured at the Pierre Auger Observatory and the Telescope Array.
EPJ Web of Conferences. Vol. 283. Les Ulis: E D P Science, 2023 - (De Mitri, I.; Barbato, F.; Boncioli, D.; Evoli, C.; Pagliaroli, G.; Salamida, F.), č. článku 02003. ISSN 2100-014X.
[International symposium on Ultra High Energy Cosmic Rays (UHECR) /6./. L'Aquila (IT), 03.10.2022-07.10.2022]
Grant CEP: GA MŠMT LTT18004; GA MŠMT EF16_013/0001402; GA MŠMT(CZ) EF18_046/0016010
Výzkumná infrastruktura: AUGER-CZ II - 90102
Institucionální podpora: RVO:68378271
Klíčová slova: ultra-high energy cosmic rays
Obor OECD: Particles and field physics

In the study of cosmic rays, the measurement of the energy spectrum of the primaries is one of the main issues and provides fundamental information on the most energetic phenomena in the Universe. At ultra-high energies, beyond 10(18) eV, the cosmic rays are studied by the two largest observatories built so far, the Pierre Auger Observatory and the Telescope Array. Both observatories are based on a hybrid design and reported a measurement of the energy spectrum using the high duty cycle of the surface detector and the calorimetric estimation of the energy scale provided by the fluorescence detector. The differences among the reported spectra are scrutinized by a working group made by members of the Pierre Auger and Telescope Array Collaborations. The two measurements have been found well in agreement below 10(19) eV while, at higher energies, they show an energy-dependent difference that is beyond the systematic uncertainties associated to the energy scale.
Trvalý link: https://hdl.handle.net/11104/0347739