Measurement of the energy spectrum of cosmic rays above 10 18 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 18 eV. We also update the previously publ...

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Autor principal: Multitudinario:474
Formato: JOUR
Materias:
Cosmic rays
Energy spectrum
Pierre Auger Observatory
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03702693_v685_n4-5_p239_Multitudinario
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03702693_v685_n4-5_p239_Multitudinario
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spelling todo:paper_03702693_v685_n4-5_p239_Multitudinario2023-10-03T15:29:03Z Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory Multitudinario:474 Cosmic rays Energy spectrum 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 18 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 - γ with index γ = 3.3 below the ankle which is measured at log 10 (E ankle / 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 10 (E / eV) = 19.5, detected with high statistical significance. © 2010 Elsevier B.V. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03702693_v685_n4-5_p239_Multitudinario
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cosmic rays
Energy spectrum
Pierre Auger Observatory
spellingShingle Cosmic rays
Energy spectrum
Pierre Auger Observatory
Multitudinario:474
Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory
topic_facet Cosmic rays
Energy spectrum
Pierre Auger Observatory
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 18 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 - γ with index γ = 3.3 below the ankle which is measured at log 10 (E ankle / 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 10 (E / eV) = 19.5, detected with high statistical significance. © 2010 Elsevier B.V. All rights reserved.
format JOUR
author Multitudinario:474
author_facet Multitudinario:474
author_sort Multitudinario:474
title Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory
title_short Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory
title_full Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory
title_fullStr Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory
title_full_unstemmed Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory
title_sort measurement of the energy spectrum of cosmic rays above 10 18 ev using the pierre auger observatory
url http://hdl.handle.net/20.500.12110/paper_03702693_v685_n4-5_p239_Multitudinario
work_keys_str_mv AT multitudinario474 measurementoftheenergyspectrumofcosmicraysabove1018evusingthepierreaugerobservatory
_version_ 1807316992198180864

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