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 (1018eV). 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..

A search for point sources of EeV neutrons / Abreu, P., Aglietta, M., Ahlers, M., Ahn, E.J., Albuquerque, I.F.M., Allard, D., Allekotte, I., Allen, J., Allison, P., Almela, A., Alvarez Castillo, J., Alvarez-Muñiz, J., Alves Batista, R., Ambrosio, M., Aminaei, A., Anchordoqui, L., Andringa, S., Antiči'C, T., Aramo, C., Arganda, E., et al.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 760:2(2012), p. 148. [10.1088/0004-637X/760/2/148]

A search for point sources of EeV neutrons

D'Urso, D.;Scherini, V.;
2012-01-01

Abstract

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 (1018eV). 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..
2012
A search for point sources of EeV neutrons / Abreu, P., Aglietta, M., Ahlers, M., Ahn, E.J., Albuquerque, I.F.M., Allard, D., Allekotte, I., Allen, J., Allison, P., Almela, A., Alvarez Castillo, J., Alvarez-Muñiz, J., Alves Batista, R., Ambrosio, M., Aminaei, A., Anchordoqui, L., Andringa, S., Antiči'C, T., Aramo, C., Arganda, E., et al.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 760:2(2012), p. 148. [10.1088/0004-637X/760/2/148]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/212133
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