Measurement of the average shape of longitudinal profiles of cosmic-ray air showers at the Pierre Auger Observatory

0511778 - FZÚ 2021 RIV GB eng J - Journal Article
Aab, A. - Abreu, P. - 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 - Trávníček, Petr - Vícha, Jakub - Yushkov, Alexey … Total 387 authors
Measurement of the average shape of longitudinal profiles of cosmic-ray air showers at the Pierre Auger Observatory.
Journal of Cosmology and Astroparticle Physics. Roč. 2019, č. 3 (2019), s. 1-19, č. článku 018. ISSN 1475-7516. E-ISSN 1475-7516
R&D Projects: GA MŠMT LTT18004; GA MŠMT EF16_013/0001402
Grant - others:OP VVV - AUGER-CZ(XE) CZ.02.1.01/0.0/0.0/16_013/0001402
Research Infrastructure: AUGER-CZ - 90038
Institutional support: RVO:68378271
Keywords : cosmic rays detectors * ultra high energy * cosmic rays
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 5.210, year: 2019
Method of publishing: Limited access
https://doi.org/10.1088/1475-7516/2019/03/018

The profile of the longitudinal development of showers produced by ultra-high energy cosmic rays carries information related to the interaction properties of the primary particles with atmospheric nuclei. In this work, we present the first measurement of the average shower pro file in traversed atmospheric depth at the Pierre Auger Observatory. The shapes of profiles are well reproduced by the Gaisser-Hillas parametrization within the range studied, for E > 10(17.8) eV. A detailed analysis of the systematic uncertainties is performed using ten years of data and a full detector simulation. The average shape is quantified using two variables related to the width and asymmetry of the profile, and the results are compared with predictions of hadronic interaction models for different primary particles.
Permanent Link: http://hdl.handle.net/11104/0302025