Measurement of the energy spectrum of cosmic rays above 10<sup>18</sup> eV using the Pierre Auger Observatory

We report a measurement of the flux of cosmic rays with unprecedented precision and statistics using the Pierre Auger Observatory. Based on fluorescence observations in coincidence with at least one surface detector we derive a spectrum for energies above 10<sup>18</sup> eV. We also upda...

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Autores principales: Badagnani, Daniel Omar, Dova, María Teresa, Gómez Albarracín, Flavia Alejandra, Hansen, Patricia María, Mariazzi, Analisa Gabriela, Moreno, Juan Cruz, Sciutto, Sergio Juan, Tarutina, Tatiana, Tueros, Matías Jorge, Wahlberg, Hernán Pablo, The Pierre Auger Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Ciencias Exactas
Física
Radiación Cósmica
Fluorescencia
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79999
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79999
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
Radiación Cósmica
Fluorescencia
spellingShingle Ciencias Exactas
Física
Radiación Cósmica
Fluorescencia
Badagnani, Daniel Omar
Dova, María Teresa
Gómez Albarracín, Flavia Alejandra
Hansen, Patricia María
Mariazzi, Analisa Gabriela
Moreno, Juan Cruz
Sciutto, Sergio Juan
Tarutina, Tatiana
Tueros, Matías Jorge
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
Measurement of the energy spectrum of cosmic rays above 10<sup>18</sup> eV using the Pierre Auger Observatory
topic_facet Ciencias Exactas
Física
Radiación Cósmica
Fluorescencia
description We report a measurement of the flux of cosmic rays with unprecedented precision and statistics using the Pierre Auger Observatory. Based on fluorescence observations in coincidence with at least one surface detector we derive a spectrum for energies above 10<sup>18</sup> eV. We also update the previously published energy spectrum obtained with the surface detector array. The two spectra are combined addressing the systematic uncertainties and, in particular, the influence of the energy resolution on the spectral shape. The spectrum can be described by a broken power law E<sup>−γ</sup> with index γ = 3.3 below the ankle which is measured at log<sub>10</sub>(E<sub>ankle</sub>/eV) = 18.6. Above the ankle the spectrum is described by a power law with index 2.6 followed by a flux suppression, above about log<sub>10</sub>(E/eV) = 19.5, detected with high statistical significance.
format Articulo
Articulo
author Badagnani, Daniel Omar
Dova, María Teresa
Gómez Albarracín, Flavia Alejandra
Hansen, Patricia María
Mariazzi, Analisa Gabriela
Moreno, Juan Cruz
Sciutto, Sergio Juan
Tarutina, Tatiana
Tueros, Matías Jorge
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author_facet Badagnani, Daniel Omar
Dova, María Teresa
Gómez Albarracín, Flavia Alejandra
Hansen, Patricia María
Mariazzi, Analisa Gabriela
Moreno, Juan Cruz
Sciutto, Sergio Juan
Tarutina, Tatiana
Tueros, Matías Jorge
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author_sort Badagnani, Daniel Omar
title Measurement of the energy spectrum of cosmic rays above 10<sup>18</sup> eV using the Pierre Auger Observatory
title_short Measurement of the energy spectrum of cosmic rays above 10<sup>18</sup> eV using the Pierre Auger Observatory
title_full Measurement of the energy spectrum of cosmic rays above 10<sup>18</sup> eV using the Pierre Auger Observatory
title_fullStr Measurement of the energy spectrum of cosmic rays above 10<sup>18</sup> eV using the Pierre Auger Observatory
title_full_unstemmed Measurement of the energy spectrum of cosmic rays above 10<sup>18</sup> eV using the Pierre Auger Observatory
title_sort measurement of the energy spectrum of cosmic rays above 10<sup>18</sup> ev using the pierre auger observatory
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/79999
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