A search for point sources of EeV photons

Measurements of air showersmade 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 ra...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, Gómez Albarracín, Flavia Alejandra, Hansen, Patricia María, Jarne, Cecilia Gisele, Mariazzi, Analisa Gabriela, Moreno, Juan Cruz, Sciutto, Sergio Juan, Wahlberg, Hernán Pablo, The Pierre Auger Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Exactas
Física
Astroparticle physics
Radiación cósmica
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/81382
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-81382
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Astroparticle physics
Radiación cósmica
spellingShingle Ciencias Exactas
Física
Astroparticle physics
Radiación cósmica
Dova, María Teresa
Gómez Albarracín, Flavia Alejandra
Hansen, Patricia María
Jarne, Cecilia Gisele
Mariazzi, Analisa Gabriela
Moreno, Juan Cruz
Sciutto, Sergio Juan
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
A search for point sources of EeV photons
topic_facet Ciencias Exactas
Física
Astroparticle physics
Radiación cósmica
description Measurements of air showersmade 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 −85º to +20º, in an energy range from 10<sup>17.3</sup> eV to 10<sup>18.5</sup> 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<sup>−2</sup> s<sup>−1</sup>, and no celestial direction exceeds 0.25 eV cm<sup>−2</sup> s<sup>−1</sup>. These upper limits constrain scenarios in which EeV cosmic ray protons are emitted by non-transient sources in the Galaxy.
format Articulo
Articulo
author Dova, María Teresa
Gómez Albarracín, Flavia Alejandra
Hansen, Patricia María
Jarne, Cecilia Gisele
Mariazzi, Analisa Gabriela
Moreno, Juan Cruz
Sciutto, Sergio Juan
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author_facet Dova, María Teresa
Gómez Albarracín, Flavia Alejandra
Hansen, Patricia María
Jarne, Cecilia Gisele
Mariazzi, Analisa Gabriela
Moreno, Juan Cruz
Sciutto, Sergio Juan
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author_sort Dova, María Teresa
title A search for point sources of EeV photons
title_short A search for point sources of EeV photons
title_full A search for point sources of EeV photons
title_fullStr A search for point sources of EeV photons
title_full_unstemmed A search for point sources of EeV photons
title_sort search for point sources of eev photons
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/81382
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