A SEARCH FOR POINT SOURCES OF EeV NEUTRONS

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 degrees to +15 degrees in declination using four different energy ranges above 1 EeV (10(18) 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. RI de souza, Vitor/D-1381-2012; Alves Batista, Rafael/K-6642-2012; Chinellato, Jose Augusto/I-7972-2012; Chinellato, Carola Dobrigkeit /F-2540-2011; Yushkov, Alexey/A-6958-2013; Bleve, Carla/J-2521-2012; Falcke, Heino/H-5262-2012; Beatty, James/D-9310-2011; Badescu, Alina/B-6087-2012; Ebr, Jan/H-8319-2012; Anjos, Joao/C-8335-2013; Fauth, Anderson/F-9570-2012; Sarkar, Subir/G-5978-2011; Caramete, Laurentiu/C-2328-2011 OI Falcke, Heino/0000-0002-2526-6724; Ebr, Jan/0000-0001-8807-6162; Sarkar, Subir/0000-0002-3542-858X;

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 degrees to +15 degrees in declination using four different energy ranges above 1 EeV (10(18) 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.