Constraints on the origin of cosmic rays above 10 18 ev from large-scale anisotropy searches in data of the pierre auger observatory

A thorough search for large-scale anisotropies in the distribution of arrival directions of cosmic rays detected above 10 18 eV at the Pierre Auger Observatory is reported. For the first time, these large-scale anisotropy searches are performed as a function of both the right ascension and the decli...

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Publicado: 2013
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20418205_v762_n1_p_Multitudinario
http://hdl.handle.net/20.500.12110/paper_20418205_v762_n1_p_Multitudinario
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_20418205_v762_n1_p_Multitudinario
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spelling paper:paper_20418205_v762_n1_p_Multitudinario2023-06-08T16:33:16Z Constraints on the origin of cosmic rays above 10 18 ev from large-scale anisotropy searches in data of the pierre auger observatory A thorough search for large-scale anisotropies in the distribution of arrival directions of cosmic rays detected above 10 18 eV at the Pierre Auger Observatory is reported. For the first time, these large-scale anisotropy searches are performed as a function of both the right ascension and the declination and expressed in terms of dipole and quadrupole moments. Within the systematic uncertainties, no significant deviation from isotropy is revealed. Upper limits on dipole and quadrupole amplitudes are derived under the hypothesis that any cosmic ray anisotropy is dominated by such moments in this energy range. These upper limits provide constraints on the production of cosmic rays above 10 18 eV, since they allow us to challenge an origin from stationary galactic sources densely distributed in the galactic disk and emitting predominantly light particles in all directions. © 2013. The American Astronomical Society. All rights reserved.. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20418205_v762_n1_p_Multitudinario http://hdl.handle.net/20.500.12110/paper_20418205_v762_n1_p_Multitudinario
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description A thorough search for large-scale anisotropies in the distribution of arrival directions of cosmic rays detected above 10 18 eV at the Pierre Auger Observatory is reported. For the first time, these large-scale anisotropy searches are performed as a function of both the right ascension and the declination and expressed in terms of dipole and quadrupole moments. Within the systematic uncertainties, no significant deviation from isotropy is revealed. Upper limits on dipole and quadrupole amplitudes are derived under the hypothesis that any cosmic ray anisotropy is dominated by such moments in this energy range. These upper limits provide constraints on the production of cosmic rays above 10 18 eV, since they allow us to challenge an origin from stationary galactic sources densely distributed in the galactic disk and emitting predominantly light particles in all directions. © 2013. The American Astronomical Society. All rights reserved..
title Constraints on the origin of cosmic rays above 10 18 ev from large-scale anisotropy searches in data of the pierre auger observatory
spellingShingle Constraints on the origin of cosmic rays above 10 18 ev from large-scale anisotropy searches in data of the pierre auger observatory
title_short Constraints on the origin of cosmic rays above 10 18 ev from large-scale anisotropy searches in data of the pierre auger observatory
title_full Constraints on the origin of cosmic rays above 10 18 ev from large-scale anisotropy searches in data of the pierre auger observatory
title_fullStr Constraints on the origin of cosmic rays above 10 18 ev from large-scale anisotropy searches in data of the pierre auger observatory
title_full_unstemmed Constraints on the origin of cosmic rays above 10 18 ev from large-scale anisotropy searches in data of the pierre auger observatory
title_sort constraints on the origin of cosmic rays above 10 18 ev from large-scale anisotropy searches in data of the pierre auger observatory
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20418205_v762_n1_p_Multitudinario
http://hdl.handle.net/20.500.12110/paper_20418205_v762_n1_p_Multitudinario
_version_ 1768543679018958848

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