An upper limit to the photon fraction in cosmic rays above 10<sup>19</sup> eV from the Pierre Auger Observatory

Autores
Badagnani, Daniel Omar; Dova, María Teresa; Epele, Luis Nicolás; Gómez Albarracín, Flavia Alejandra; Grunfeld, Christian Martín; Manceñido, Mónica E.; Sciutto, Sergio Juan; Tueros, Matías Jorge; Veiga, Alejandro Luis; Wahlberg, Hernán Pablo; The Pierre Auger Collaboration
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
An upper limit of 16% (at 95% c.l.) is derived for the photon fraction in cosmic rays with energies greater than 1019 eV, based on observations of the depth of shower maximum performed with the hybrid detector of the Pierre Auger Observatory. This is the first such limit on photons obtained by observing the fluorescence light profile of air showers. This upper limit confirms and improves on previous results from the Haverah Park and AGASA surface arrays. Additional data recorded with the Auger surface detectors for a subset of the event sample support the conclusion that a photon origin of the observed events is not favored.
Facultad de Ciencias Exactas
Materia
Ciencias Exactas
Física
Radiación cósmica
Fotones
Cascada atmosférica extensa
Pierre Auger Observatory
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/80562

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oai_identifier_str oai:sedici.unlp.edu.ar:10915/80562
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling An upper limit to the photon fraction in cosmic rays above 10<sup>19</sup> eV from the Pierre Auger ObservatoryBadagnani, Daniel OmarDova, María TeresaEpele, Luis NicolásGómez Albarracín, Flavia AlejandraGrunfeld, Christian MartínManceñido, Mónica E.Sciutto, Sergio JuanTueros, Matías JorgeVeiga, Alejandro LuisWahlberg, Hernán PabloThe Pierre Auger CollaborationCiencias ExactasFísicaRadiación cósmicaFotonesCascada atmosférica extensaPierre Auger ObservatoryAn upper limit of 16% (at 95% c.l.) is derived for the photon fraction in cosmic rays with energies greater than 10<sup>19</sup> eV, based on observations of the depth of shower maximum performed with the hybrid detector of the Pierre Auger Observatory. This is the first such limit on photons obtained by observing the fluorescence light profile of air showers. This upper limit confirms and improves on previous results from the Haverah Park and AGASA surface arrays. Additional data recorded with the Auger surface detectors for a subset of the event sample support the conclusion that a photon origin of the observed events is not favored.Facultad de Ciencias Exactas2007-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf155-168http://sedici.unlp.edu.ar/handle/10915/80562enginfo:eu-repo/semantics/altIdentifier/issn/0927-6505info:eu-repo/semantics/altIdentifier/doi/10.1016/j.astropartphys.2006.10.004info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:14:51Zoai:sedici.unlp.edu.ar:10915/80562Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:14:51.948SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv An upper limit to the photon fraction in cosmic rays above 10<sup>19</sup> eV from the Pierre Auger Observatory
title An upper limit to the photon fraction in cosmic rays above 10<sup>19</sup> eV from the Pierre Auger Observatory
spellingShingle An upper limit to the photon fraction in cosmic rays above 10<sup>19</sup> eV from the Pierre Auger Observatory
Badagnani, Daniel Omar
Ciencias Exactas
Física
Radiación cósmica
Fotones
Cascada atmosférica extensa
Pierre Auger Observatory
title_short An upper limit to the photon fraction in cosmic rays above 10<sup>19</sup> eV from the Pierre Auger Observatory
title_full An upper limit to the photon fraction in cosmic rays above 10<sup>19</sup> eV from the Pierre Auger Observatory
title_fullStr An upper limit to the photon fraction in cosmic rays above 10<sup>19</sup> eV from the Pierre Auger Observatory
title_full_unstemmed An upper limit to the photon fraction in cosmic rays above 10<sup>19</sup> eV from the Pierre Auger Observatory
title_sort An upper limit to the photon fraction in cosmic rays above 10<sup>19</sup> eV from the Pierre Auger Observatory
dc.creator.none.fl_str_mv Badagnani, Daniel Omar
Dova, María Teresa
Epele, Luis Nicolás
Gómez Albarracín, Flavia Alejandra
Grunfeld, Christian Martín
Manceñido, Mónica E.
Sciutto, Sergio Juan
Tueros, Matías Jorge
Veiga, Alejandro Luis
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author Badagnani, Daniel Omar
author_facet Badagnani, Daniel Omar
Dova, María Teresa
Epele, Luis Nicolás
Gómez Albarracín, Flavia Alejandra
Grunfeld, Christian Martín
Manceñido, Mónica E.
Sciutto, Sergio Juan
Tueros, Matías Jorge
Veiga, Alejandro Luis
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author_role author
author2 Dova, María Teresa
Epele, Luis Nicolás
Gómez Albarracín, Flavia Alejandra
Grunfeld, Christian Martín
Manceñido, Mónica E.
Sciutto, Sergio Juan
Tueros, Matías Jorge
Veiga, Alejandro Luis
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
Radiación cósmica
Fotones
Cascada atmosférica extensa
Pierre Auger Observatory
topic Ciencias Exactas
Física
Radiación cósmica
Fotones
Cascada atmosférica extensa
Pierre Auger Observatory
dc.description.none.fl_txt_mv An upper limit of 16% (at 95% c.l.) is derived for the photon fraction in cosmic rays with energies greater than 10<sup>19</sup> eV, based on observations of the depth of shower maximum performed with the hybrid detector of the Pierre Auger Observatory. This is the first such limit on photons obtained by observing the fluorescence light profile of air showers. This upper limit confirms and improves on previous results from the Haverah Park and AGASA surface arrays. Additional data recorded with the Auger surface detectors for a subset of the event sample support the conclusion that a photon origin of the observed events is not favored.
Facultad de Ciencias Exactas
description An upper limit of 16% (at 95% c.l.) is derived for the photon fraction in cosmic rays with energies greater than 10<sup>19</sup> eV, based on observations of the depth of shower maximum performed with the hybrid detector of the Pierre Auger Observatory. This is the first such limit on photons obtained by observing the fluorescence light profile of air showers. This upper limit confirms and improves on previous results from the Haverah Park and AGASA surface arrays. Additional data recorded with the Auger surface detectors for a subset of the event sample support the conclusion that a photon origin of the observed events is not favored.
publishDate 2007
dc.date.none.fl_str_mv 2007-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/80562
url http://sedici.unlp.edu.ar/handle/10915/80562
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0927-6505
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.astropartphys.2006.10.004
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
155-168
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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