Direct measurement of the muonic content of extensive air showers between 2 × 10^17 and 2 × 10^18 eV at the Pierre Auger Observatory

The hybrid design of the Pierre Auger Observa tory allows for the measurement of the properties of exten sive air showers initiated by ultra-high energy cosmic rays with unprecedented precision. By using an array of proto type underground muon detectors, we have performed the first direct measurem...

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Detalles Bibliográficos
Autores principales: Aab, A., Abreu, P., Aglietta, M., Freire, M. M., Zepeda, A., Ziolkowski, M., Zuccarello, F.
Formato: article artículo publishedVersion
Lenguaje:Inglés
Publicado: Springer 2021
Materias:
Acceso en línea:http://hdl.handle.net/2133/20516
http://hdl.handle.net/2133/20516
Aporte de:
id I15-R121-2133-20516
record_format dspace
institution Universidad Nacional de Rosario
institution_str I-15
repository_str R-121
collection Repositorio Hipermedial de la Universidad Nacional de Rosario (UNR)
language Inglés
orig_language_str_mv eng
topic Extensive Air Showers
Cosmic Rays
Astroparticles
Muon
spellingShingle Extensive Air Showers
Cosmic Rays
Astroparticles
Muon
Aab, A.
Abreu, P.
Aglietta, M.
Freire, M. M.
Zepeda, A.
Ziolkowski, M.
Zuccarello, F.
Direct measurement of the muonic content of extensive air showers between 2 × 10^17 and 2 × 10^18 eV at the Pierre Auger Observatory
topic_facet Extensive Air Showers
Cosmic Rays
Astroparticles
Muon
description The hybrid design of the Pierre Auger Observa tory allows for the measurement of the properties of exten sive air showers initiated by ultra-high energy cosmic rays with unprecedented precision. By using an array of proto type underground muon detectors, we have performed the first direct measurement, by the Auger Collaboration, of the muon content of air showers between 2 × 10^17 and 2 × 10^18 eV. We have studied the energy evolution of the attenuation corrected muon density, and compared it to predictions from air shower simulations. The observed densities are found to be larger than those predicted by models. We quantify this discrepancy by combining the measurements from the muon detector with those from the Auger fluorescence detector at 1017.5 eV and 1018 eV. We find that, for the models to explain the data, an increase in the muon density of 38% ±4%(12%) ±21% 18% for EPOS- LHC, and of 50%(53%) ±4%(13%) ±23% 20% for QGSJetII- 04, is respectively needed.
format article
artículo
publishedVersion
author Aab, A.
Abreu, P.
Aglietta, M.
Freire, M. M.
Zepeda, A.
Ziolkowski, M.
Zuccarello, F.
author_facet Aab, A.
Abreu, P.
Aglietta, M.
Freire, M. M.
Zepeda, A.
Ziolkowski, M.
Zuccarello, F.
author_sort Aab, A.
title Direct measurement of the muonic content of extensive air showers between 2 × 10^17 and 2 × 10^18 eV at the Pierre Auger Observatory
title_short Direct measurement of the muonic content of extensive air showers between 2 × 10^17 and 2 × 10^18 eV at the Pierre Auger Observatory
title_full Direct measurement of the muonic content of extensive air showers between 2 × 10^17 and 2 × 10^18 eV at the Pierre Auger Observatory
title_fullStr Direct measurement of the muonic content of extensive air showers between 2 × 10^17 and 2 × 10^18 eV at the Pierre Auger Observatory
title_full_unstemmed Direct measurement of the muonic content of extensive air showers between 2 × 10^17 and 2 × 10^18 eV at the Pierre Auger Observatory
title_sort direct measurement of the muonic content of extensive air showers between 2 × 10^17 and 2 × 10^18 ev at the pierre auger observatory
publisher Springer
publishDate 2021
url http://hdl.handle.net/2133/20516
http://hdl.handle.net/2133/20516
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