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dc.date.accessioned 2019-09-05T15:44:34Z
dc.date.available 2019-09-05T15:44:34Z
dc.date.issued 2007-03
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/80562
dc.description.abstract 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. en
dc.format.extent 155-168 es
dc.language en es
dc.subject Radiación cósmica es
dc.subject Fotones es
dc.subject Cascada atmosférica extensa es
dc.subject Pierre Auger Observatory es
dc.title An upper limit to the photon fraction in cosmic rays above 1019 eV from the Pierre Auger Observatory en
dc.type Articulo es
sedici.identifier.other https://doi.org/10.1016/j.astropartphys.2006.10.004 es
sedici.identifier.issn 0927-6505 es
sedici.creator.person Badagnani, Daniel Omar es
sedici.creator.person Dova, María Teresa es
sedici.creator.person Epele, Luis Nicolás es
sedici.creator.person Gómez Albarracín, Flavia Alejandra es
sedici.creator.person Grunfeld, Christian Martín es
sedici.creator.person Manceñido, Mónica E. es
sedici.creator.person Sciutto, Sergio Juan es
sedici.creator.person Tueros, Matías Jorge es
sedici.creator.person Veiga, Alejandro Luis es
sedici.creator.person Wahlberg, Hernán Pablo es
sedici.creator.person The Pierre Auger Collaboration es
sedici.subject.materias Ciencias Exactas es
sedici.subject.materias Física es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Exactas es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Astroparticle Physics es
sedici.relation.journalVolumeAndIssue vol. 27, no. 2-3 es


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)