Direct measurement of the muonic content of extensive air showers between 2 × 10¹⁷ and 2 × 10¹⁸ eV at the Pierre Auger Observatory

The hybrid design of the Pierre Auger Observatory allows for the measurement of the properties of extensive air showers initiated by ultra-high energy cosmic rays with unprecedented precision. By using an array of prototype underground muon detectors, we have performed the first direct measurement,...

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Detalles Bibliográficos
Autores principales: Calcagni, Laura Randa, Dova, María Teresa, Hansen, Patricia María, Mariazzi, Analisa Gabriela, Sciutto, Sergio Juan, Tueros, Matías Jorge, Vergara Quispe, Indira Dajhana, Wahlberg, Hernán Pablo, The Pierre Auger Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Exactas
Física
Cosmic ray
Physics
Air shower
Energy
Muon
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125559
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125559
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Cosmic ray
Physics
Air shower
Energy
Muon
spellingShingle Ciencias Exactas
Física
Cosmic ray
Physics
Air shower
Energy
Muon
Calcagni, Laura Randa
Dova, María Teresa
Hansen, Patricia María
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Tueros, Matías Jorge
Vergara Quispe, Indira Dajhana
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
Direct measurement of the muonic content of extensive air showers between 2 × 10¹⁷ and 2 × 10¹⁸ eV at the Pierre Auger Observatory
topic_facet Ciencias Exactas
Física
Cosmic ray
Physics
Air shower
Energy
Muon
description The hybrid design of the Pierre Auger Observatory allows for the measurement of the properties of extensive air showers initiated by ultra-high energy cosmic rays with unprecedented precision. By using an array of prototype underground muon detectors, we have performed the first direct measurement, by the Auger Collaboration, of the muon content of air showers between 2 × 10¹⁷ and 2 × 10¹⁸ 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 10<sup>17.5</sup> eV and 10¹⁸ eV. We find that, for the models to explain the data, an increase in the muon density of 38% ± 4%(12%) ± <sup>21%</sup><sub>18%</sub> for EPOS- LHC, and of 50%(53%) ± 4%(13%) ± <sup>23%</sup><sub>20%</sub> for QGSJetII- 04, is respectively needed.
format Articulo
Articulo
author Calcagni, Laura Randa
Dova, María Teresa
Hansen, Patricia María
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Tueros, Matías Jorge
Vergara Quispe, Indira Dajhana
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author_facet Calcagni, Laura Randa
Dova, María Teresa
Hansen, Patricia María
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Tueros, Matías Jorge
Vergara Quispe, Indira Dajhana
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author_sort Calcagni, Laura Randa
title Direct measurement of the muonic content of extensive air showers between 2 × 10¹⁷ and 2 × 10¹⁸ eV at the Pierre Auger Observatory
title_short Direct measurement of the muonic content of extensive air showers between 2 × 10¹⁷ and 2 × 10¹⁸ eV at the Pierre Auger Observatory
title_full Direct measurement of the muonic content of extensive air showers between 2 × 10¹⁷ and 2 × 10¹⁸ eV at the Pierre Auger Observatory
title_fullStr Direct measurement of the muonic content of extensive air showers between 2 × 10¹⁷ and 2 × 10¹⁸ eV at the Pierre Auger Observatory
title_full_unstemmed Direct measurement of the muonic content of extensive air showers between 2 × 10¹⁷ and 2 × 10¹⁸ eV at the Pierre Auger Observatory
title_sort direct measurement of the muonic content of extensive air showers between 2 × 10¹⁷ and 2 × 10¹⁸ ev at the pierre auger observatory
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/125559
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