Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events

We present the first hybrid measurement of the average muon number in air showers at ultrahigh energies, initiated by cosmic rays with zenith angles between 62° and 80°. The measurement is based on 174 hybrid events recorded simultaneously with the surface detector array and the fluorescence detecto...

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Autores principales: Dova, María Teresa, Hansen, Patricia María, Jarne, Cecilia Gisele, Mariazzi, Analisa Gabriela, Sciutto, Sergio Juan, Wahlberg, Hernán Pablo, Pierre Auger Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Física
Cosmic rays
Hadronic interaction models
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86887
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86887
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Cosmic rays
Hadronic interaction models
spellingShingle Física
Cosmic rays
Hadronic interaction models
Dova, María Teresa
Hansen, Patricia María
Jarne, Cecilia Gisele
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Wahlberg, Hernán Pablo
Pierre Auger Collaboration
Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events
topic_facet Física
Cosmic rays
Hadronic interaction models
description We present the first hybrid measurement of the average muon number in air showers at ultrahigh energies, initiated by cosmic rays with zenith angles between 62° and 80°. The measurement is based on 174 hybrid events recorded simultaneously with the surface detector array and the fluorescence detector of the Pierre Auger Observatory. The muon number for each shower is derived by scaling a simulated reference profile of the lateral muon density distribution at the ground until it fits the data. A 1019eV shower with a zenith angle of 67°, which arrives at the surface detector array at an altitude of 1450 m above sea level, contains on average (2.68±0.04±0.48(sys))×107 muons with energies larger than 0.3 GeV. The logarithmic gain dlnNμ/dlnE of muons with increasing energy between 4×1018eV and 5×1019eV is measured to be (1.029±0.024±0.030(sys)).
format Articulo
Articulo
author Dova, María Teresa
Hansen, Patricia María
Jarne, Cecilia Gisele
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Wahlberg, Hernán Pablo
Pierre Auger Collaboration
author_facet Dova, María Teresa
Hansen, Patricia María
Jarne, Cecilia Gisele
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Wahlberg, Hernán Pablo
Pierre Auger Collaboration
author_sort Dova, María Teresa
title Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events
title_short Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events
title_full Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events
title_fullStr Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events
title_full_unstemmed Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events
title_sort muons in air showers at the pierre auger observatory: mean number in highly inclined events
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/86887
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