par Abreu, Pedro;Maris, Ioana Codrina 
; [et al.]
Référence The Astrophysical journal, 760, 2, 148
Publication Publié, 2012-12
; [et al.]Référence The Astrophysical journal, 760, 2, 148
Publication Publié, 2012-12
Article révisé par les pairs
| Résumé : | A thorough search of the sky exposed at the Pierre Auger Cosmic Ray Observatory reveals no statistically significant excess of events in any small solid angle that would be indicative of a flux of neutral particles from a discrete source. The search covers from -90° to +15° in declination using four different energy ranges above 1 EeV (1018 eV). The method used in this search is more sensitive to neutrons than to photons. The upper limit on a neutron flux is derived for a dense grid of directions for each of the four energy ranges. These results constrain scenarios for the production of ultrahigh energy cosmic rays in the Galaxy. © 2012. The American Astronomical Society. All rights reserved. |
