Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) ev at the pierre auger observatory and the telescope array

Spherical harmonic moments are well-suited for capturing anisotropy at any scale in the flux of cosmic rays. An unambiguous measurement of the full set of spherical harmonic coefficients requires full-sky coverage. This can be achieved by combining data from observatories located in both the norther...

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Detalhes bibliográficos
Autores: Arqueros Martínez, Fernando, García Pinto, Diego, Minaya Flores, Ignacio Andrés, Rosado Vélez, Jaime, Vázquez Peñas, José Ramón
Tipo de documento: artigo
Data de publicação:2014
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositório:Docta Complutense
Idioma:inglês
OAI Identifier:oai:docta.ucm.es:20.500.14352/34779
Acesso em linha:https://hdl.handle.net/20.500.14352/34779
Access Level:Acceso aberto
Palavra-chave:539.1
Air-shower array
Surface detector
Icecube
Resolution
Spectrum.
Física nuclear
2207 Física Atómica y Nuclear
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oai_identifier_str oai:docta.ucm.es:20.500.14352/34779
network_acronym_str ES
network_name_str España
repository_id_str
spelling Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) ev at the pierre auger observatory and the telescope arrayArqueros Martínez, FernandoGarcía Pinto, DiegoMinaya Flores, Ignacio AndrésRosado Vélez, JaimeVázquez Peñas, José Ramón539.1Air-shower arraySurface detectorIcecubeResolutionSpectrum.Física nuclear2207 Física Atómica y NuclearSpherical harmonic moments are well-suited for capturing anisotropy at any scale in the flux of cosmic rays. An unambiguous measurement of the full set of spherical harmonic coefficients requires full-sky coverage. This can be achieved by combining data from observatories located in both the northern and southern hemispheres. To this end, a joint analysis using data recorded at the Telescope Array and the Pierre Auger Observatory above 10(19) eV is presented in this work. The resulting multipolar expansion of the flux of cosmic rays allows us to perform a series of anisotropy searches, and in particular to report on the angular power spectrum of cosmic rays above 10(19) eV. No significant deviation from isotropic expectations is found throughout the analyses performed. Upper limits on the amplitudes of the dipole and quadrupole moments are derived as a function of the direction in the sky, varying between 7% and 13% for the dipole and between 7% and 10% for a symmetric quadrupole.IOP Publising LTDUniversidad Complutense de Madrid20142014-10-2020142014-10-20journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/34779reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/347792026-06-02T12:44:21Z
dc.title.none.fl_str_mv Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) ev at the pierre auger observatory and the telescope array
title Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) ev at the pierre auger observatory and the telescope array
spellingShingle Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) ev at the pierre auger observatory and the telescope array
Arqueros Martínez, Fernando
539.1
Air-shower array
Surface detector
Icecube
Resolution
Spectrum.
Física nuclear
2207 Física Atómica y Nuclear
title_short Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) ev at the pierre auger observatory and the telescope array
title_full Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) ev at the pierre auger observatory and the telescope array
title_fullStr Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) ev at the pierre auger observatory and the telescope array
title_full_unstemmed Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) ev at the pierre auger observatory and the telescope array
title_sort Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) ev at the pierre auger observatory and the telescope array
dc.creator.none.fl_str_mv Arqueros Martínez, Fernando
García Pinto, Diego
Minaya Flores, Ignacio Andrés
Rosado Vélez, Jaime
Vázquez Peñas, José Ramón
author Arqueros Martínez, Fernando
author_facet Arqueros Martínez, Fernando
García Pinto, Diego
Minaya Flores, Ignacio Andrés
Rosado Vélez, Jaime
Vázquez Peñas, José Ramón
author_role author
author2 García Pinto, Diego
Minaya Flores, Ignacio Andrés
Rosado Vélez, Jaime
Vázquez Peñas, José Ramón
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 539.1
Air-shower array
Surface detector
Icecube
Resolution
Spectrum.
Física nuclear
2207 Física Atómica y Nuclear
topic 539.1
Air-shower array
Surface detector
Icecube
Resolution
Spectrum.
Física nuclear
2207 Física Atómica y Nuclear
description Spherical harmonic moments are well-suited for capturing anisotropy at any scale in the flux of cosmic rays. An unambiguous measurement of the full set of spherical harmonic coefficients requires full-sky coverage. This can be achieved by combining data from observatories located in both the northern and southern hemispheres. To this end, a joint analysis using data recorded at the Telescope Array and the Pierre Auger Observatory above 10(19) eV is presented in this work. The resulting multipolar expansion of the flux of cosmic rays allows us to perform a series of anisotropy searches, and in particular to report on the angular power spectrum of cosmic rays above 10(19) eV. No significant deviation from isotropic expectations is found throughout the analyses performed. Upper limits on the amplitudes of the dipole and quadrupole moments are derived as a function of the direction in the sky, varying between 7% and 13% for the dipole and between 7% and 10% for a symmetric quadrupole.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-10-20
2014
2014-10-20
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/34779
url https://hdl.handle.net/20.500.14352/34779
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IOP Publising LTD
publisher.none.fl_str_mv IOP Publising LTD
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869417253904056321
score 15,228081

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