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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/80562
Ver los metadatos del registro completo
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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:UNLP2025-10-22T16:55:41Zoai: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:13292025-10-22 16:55:41.439SEDICI (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 |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/80562 |
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http://sedici.unlp.edu.ar/handle/10915/80562 |
| dc.language.none.fl_str_mv |
eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/0927-6505 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.astropartphys.2006.10.004 |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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