Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory

Autores
Abreu, P.; Aglietta, M.; Albury, J.M.; Allekotte, Ingomar; Mollerach, Maria Silvia; Almeida Cheminant, K.; Zapparrata, O.; Zas, E.; Zavrtanik, D.; Zavrtanik, M.; Zehrer, L.
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A promising energy range to look for angular correlations between cosmic rays of extragalactic origin and their sources is at the highest energies, above a few tens of EeV (1 EeV ≡ 1018 eV). Despite the flux of these particles being extremely low, the area of ∼3000 km2 covered at the Pierre Auger Observatory, and the 17 yr data-taking period of the Phase 1 of its operations, have enabled us to measure the arrival directions of more than 2600 ultrahigh-energy cosmic rays above 32 EeV. We publish this data set, the largest available at such energies from an integrated exposure of 122,000 km2 sr yr, and search it for anisotropies over the 3.4π steradians covered with the Observatory. Evidence for a deviation in excess of isotropy at intermediate angular scales, with ∼15° Gaussian spread or ∼25° top-hat radius, is obtained at the 4σ significance level for cosmic-ray energies above ∼40 EeV.
Fil: Abreu, P.. Instituto Superior Tecnico; Portugal. Universidade Nova de Lisboa; Portugal
Fil: Aglietta, M.. Istituto Nazionale di Astrofisica; Italia. Istituto Nazionale di Fisica Nucleare; Italia
Fil: Albury, J.M.. University of Adelaide; Australia
Fil: Allekotte, Ingomar. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Mollerach, Maria Silvia. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Almeida Cheminant, K.. Polish Academy Of Sciences; Polonia
Fil: Zapparrata, O.. Université Libre de Bruxelles; Bélgica
Fil: Zas, E.. Universidad de Santiago de Compostela; España
Fil: Zavrtanik, D.. University of Nova Gorica; Eslovaquia. Experimental Particle Physics Department; Eslovaquia
Fil: Zavrtanik, M.. University of Nova Gorica; Eslovaquia. Experimental Particle Physics Department; Eslovaquia
Fil: Zehrer, L.. University of Nova Gorica; Eslovaquia
Materia
COSMIC RAYS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/217417
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger ObservatoryAbreu, P.Aglietta, M.Albury, J.M.Allekotte, IngomarMollerach, Maria SilviaAlmeida Cheminant, K.Zapparrata, O.Zas, E.Zavrtanik, D.Zavrtanik, M.Zehrer, L.COSMIC RAYShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A promising energy range to look for angular correlations between cosmic rays of extragalactic origin and their sources is at the highest energies, above a few tens of EeV (1 EeV ≡ 1018 eV). Despite the flux of these particles being extremely low, the area of ∼3000 km2 covered at the Pierre Auger Observatory, and the 17 yr data-taking period of the Phase 1 of its operations, have enabled us to measure the arrival directions of more than 2600 ultrahigh-energy cosmic rays above 32 EeV. We publish this data set, the largest available at such energies from an integrated exposure of 122,000 km2 sr yr, and search it for anisotropies over the 3.4π steradians covered with the Observatory. Evidence for a deviation in excess of isotropy at intermediate angular scales, with ∼15° Gaussian spread or ∼25° top-hat radius, is obtained at the 4σ significance level for cosmic-ray energies above ∼40 EeV.Fil: Abreu, P.. Instituto Superior Tecnico; Portugal. Universidade Nova de Lisboa; PortugalFil: Aglietta, M.. Istituto Nazionale di Astrofisica; Italia. Istituto Nazionale di Fisica Nucleare; ItaliaFil: Albury, J.M.. University of Adelaide; AustraliaFil: Allekotte, Ingomar. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Mollerach, Maria Silvia. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Almeida Cheminant, K.. Polish Academy Of Sciences; PoloniaFil: Zapparrata, O.. Université Libre de Bruxelles; BélgicaFil: Zas, E.. Universidad de Santiago de Compostela; EspañaFil: Zavrtanik, D.. University of Nova Gorica; Eslovaquia. Experimental Particle Physics Department; EslovaquiaFil: Zavrtanik, M.. University of Nova Gorica; Eslovaquia. Experimental Particle Physics Department; EslovaquiaFil: Zehrer, L.. University of Nova Gorica; EslovaquiaIOP Publishing2022-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/217417Abreu, P.; Aglietta, M.; Albury, J.M.; Allekotte, Ingomar; Mollerach, Maria Silvia; et al.; Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory; IOP Publishing; Astrophysical Journal; 935; 2; 8-2022; 1-240004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ac7d4einfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/ac7d4einfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:43:33Zoai:ri.conicet.gov.ar:11336/217417instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:43:33.611CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory
title Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory
spellingShingle Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory
Abreu, P.
COSMIC RAYS
title_short Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory
title_full Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory
title_fullStr Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory
title_full_unstemmed Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory
title_sort Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory
dc.creator.none.fl_str_mv Abreu, P.
Aglietta, M.
Albury, J.M.
Allekotte, Ingomar
Mollerach, Maria Silvia
Almeida Cheminant, K.
Zapparrata, O.
Zas, E.
Zavrtanik, D.
Zavrtanik, M.
Zehrer, L.
author Abreu, P.
author_facet Abreu, P.
Aglietta, M.
Albury, J.M.
Allekotte, Ingomar
Mollerach, Maria Silvia
Almeida Cheminant, K.
Zapparrata, O.
Zas, E.
Zavrtanik, D.
Zavrtanik, M.
Zehrer, L.
author_role author
author2 Aglietta, M.
Albury, J.M.
Allekotte, Ingomar
Mollerach, Maria Silvia
Almeida Cheminant, K.
Zapparrata, O.
Zas, E.
Zavrtanik, D.
Zavrtanik, M.
Zehrer, L.
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv COSMIC RAYS
topic COSMIC RAYS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A promising energy range to look for angular correlations between cosmic rays of extragalactic origin and their sources is at the highest energies, above a few tens of EeV (1 EeV ≡ 1018 eV). Despite the flux of these particles being extremely low, the area of ∼3000 km2 covered at the Pierre Auger Observatory, and the 17 yr data-taking period of the Phase 1 of its operations, have enabled us to measure the arrival directions of more than 2600 ultrahigh-energy cosmic rays above 32 EeV. We publish this data set, the largest available at such energies from an integrated exposure of 122,000 km2 sr yr, and search it for anisotropies over the 3.4π steradians covered with the Observatory. Evidence for a deviation in excess of isotropy at intermediate angular scales, with ∼15° Gaussian spread or ∼25° top-hat radius, is obtained at the 4σ significance level for cosmic-ray energies above ∼40 EeV.
Fil: Abreu, P.. Instituto Superior Tecnico; Portugal. Universidade Nova de Lisboa; Portugal
Fil: Aglietta, M.. Istituto Nazionale di Astrofisica; Italia. Istituto Nazionale di Fisica Nucleare; Italia
Fil: Albury, J.M.. University of Adelaide; Australia
Fil: Allekotte, Ingomar. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Mollerach, Maria Silvia. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Almeida Cheminant, K.. Polish Academy Of Sciences; Polonia
Fil: Zapparrata, O.. Université Libre de Bruxelles; Bélgica
Fil: Zas, E.. Universidad de Santiago de Compostela; España
Fil: Zavrtanik, D.. University of Nova Gorica; Eslovaquia. Experimental Particle Physics Department; Eslovaquia
Fil: Zavrtanik, M.. University of Nova Gorica; Eslovaquia. Experimental Particle Physics Department; Eslovaquia
Fil: Zehrer, L.. University of Nova Gorica; Eslovaquia
description A promising energy range to look for angular correlations between cosmic rays of extragalactic origin and their sources is at the highest energies, above a few tens of EeV (1 EeV ≡ 1018 eV). Despite the flux of these particles being extremely low, the area of ∼3000 km2 covered at the Pierre Auger Observatory, and the 17 yr data-taking period of the Phase 1 of its operations, have enabled us to measure the arrival directions of more than 2600 ultrahigh-energy cosmic rays above 32 EeV. We publish this data set, the largest available at such energies from an integrated exposure of 122,000 km2 sr yr, and search it for anisotropies over the 3.4π steradians covered with the Observatory. Evidence for a deviation in excess of isotropy at intermediate angular scales, with ∼15° Gaussian spread or ∼25° top-hat radius, is obtained at the 4σ significance level for cosmic-ray energies above ∼40 EeV.
publishDate 2022
dc.date.none.fl_str_mv 2022-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/217417
Abreu, P.; Aglietta, M.; Albury, J.M.; Allekotte, Ingomar; Mollerach, Maria Silvia; et al.; Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory; IOP Publishing; Astrophysical Journal; 935; 2; 8-2022; 1-24
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/217417
identifier_str_mv Abreu, P.; Aglietta, M.; Albury, J.M.; Allekotte, Ingomar; Mollerach, Maria Silvia; et al.; Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory; IOP Publishing; Astrophysical Journal; 935; 2; 8-2022; 1-24
0004-637X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ac7d4e
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/ac7d4e
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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