A search for point sources of EeV photons
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A search for point sources of EeV photons

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A search for point sources of EeV photons

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dc.contributor.author The Pierre Auger Collaboration
dc.contributor.author Pastor Carpi, Sergio
dc.date.accessioned 2015-02-24T09:30:08Z
dc.date.available 2015-02-24T09:30:08Z
dc.date.issued 2014
dc.identifier.uri http://hdl.handle.net/10550/42250
dc.description.abstract Measurements of air showers made using the hybrid technique developed with the fluorescence and surface detectors of the Pierre Auger Observatory allow a sensitive search for point sources of EeV photons anywhere in the exposed sky. A multivariate analysis reduces the background of hadronic cosmic rays. The search is sensitive to a declination band from -85° to +20°, in an energy range from 10^17.3 eV to 10^18.5 eV. No photon point source has been detected. An upper limit on the photon flux has been derived for every direction. The mean value of the energy flux limit that results from this, assuming a photon spectral index of -2, is 0.06 eV cm¿2 s¿1, and no celestial direction exceeds 0.25 eV cm-2 s-1. These upper limits constrain scenarios in which EeV cosmic ray protons are emitted by non-transient sources in the Galaxy.
dc.language.iso eng
dc.relation.ispartof Astrophysical Journal, 2014, vol. 789, num. 2, p. 160-1-160-12
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source The Pierre Auger Collaboration Pastor Carpi, Sergio 2014 A search for point sources of EeV photons Astrophysical Journal 789 2 160-1 160-12
dc.subject Astrofísica
dc.title A search for point sources of EeV photons
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-02-24T09:30:08Z
dc.identifier.doi http://dx.doi.org/10.1088/0004-637X/789/2/160
dc.identifier.idgrec 101531

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