Measurement of the cosmic-ray energy spectrum above 2.5 × 10.sup.18./sup. eV using the Pierre Auger Observatory

0535533 - FZÚ 2021 RIV US eng J - Journal Article
Aab, A. - Abreu, A. - Aglietta, M. - Bakalová, Alena - Blažek, Jiří - Boháčová, Martina - Chudoba, Jiří - Ebr, Jan - 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 … Total 382 authors
Measurement of the cosmic-ray energy spectrum above 2.5 × 10¹⁸ eV using the Pierre Auger Observatory.
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 102, č. 6 (2020), s. 1-27, č. článku 062005. ISSN 1550-7998
R&D Projects: GA MŠMT LTT18004; GA MŠMT(CZ) LM2018102; GA MŠMT LM2015038; GA MŠMT(CZ) EF18_046/0016010; GA MŠMT EF16_013/0001402
Grant - others:OP VVV - AUGERII.CZ(XE) CZ.02.1.01/0.0/0.0/18_046/0016010; OP VVV - AUGER-CZ(XE) CZ.02.1.01/0.0/0.0/16_013/0001402
Institutional support: RVO:68378271
Keywords : Pierre Auger Obervatory * ultrahigh energy cosmic ray * fluorescence detector * cosmic-ray energy
OECD category: Particles and field physics
Impact factor: 4.833, year: 2019
Method of publishing: Open access

We report a measurement of the energy spectrum of cosmic rays for energies above 2.5 x 10(18) eV based on 215,030 events recorded with zenith angles below 60 degrees. A key feature of the work is that the estimates of the energies are independent of assumptions about the unknown hadronic physics or of the primary mass composition. The measurement is the most precise made hitherto with the accumulated exposure being so large that the measurements of the flux are dominated by systematic uncertainties except at energies above 5 x 10(19) eV.
Permanent Link: http://hdl.handle.net/11104/0313538