Medium-scale anisotropies in the arrival directions of UHECRs observed by the Pierre Auger Observatory

0569012 - FZÚ 2023 RIV IT eng J - Článek v odborném periodiku
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 … celkem 374 autorů
Medium-scale anisotropies in the arrival directions of UHECRs observed by the Pierre Auger Observatory.
Nuovo Cimento della Societa Italiana di Fisica C-Geophysics and Space Physics. Roč. 45, č. 5 (2022), č. článku 144. ISSN 1124-1896
Grant CEP: GA MŠMT LTT18004; GA MŠMT LM2015038; GA MŠMT EF16_013/0001402; GA MŠMT(CZ) EF18_046/0016010
Grant ostatní: OP VVV - AUGER-CZ(XE) CZ.02.1.01/0.0/0.0/16_013/0001402; OP VVV - AUGERII.CZ(XE) CZ.02.1.01/0.0/0.0/18_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
Způsob publikování: Open access
https://www.auger.org/archive/authors_2021_09.html

The most prominent obstacle to identifying the sources of UltraHigh-Energy Cosmic Rays (UHECRs) is their incredibly low flux. For this reason, the Pierre Auger Observatory covers an area of ∼3000 km2 and, in its 17 years of operation, has collected over 2600 UHECR events with energies above 32 EeV. In this contribution, I present the search of this dataset for anisotropies on medium scales of a few tenths of degrees in the arrival directions of UHECRs. Evidence for an overdensity in the Centaurus region of the sky is obtained at the 4σ significance level, this evidence is corroborated by a catalog-based likelihood ratio analysis comparing the dataset against the distribution of the closest radiogalaxies and starburst galaxies.
Trvalý link: https://hdl.handle.net/11104/0340324