INVESTIGADORES
MORENO Juan Cruz
artículos
Título:
A Targeted Search for Point Sources of EeV Neutrons
Autor/es:
PIERRE AUGER COLLABORATION, MORENO JUAN CRUZ
Revista:
ASTROPHYSICAL JOURNAL
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2014
ISSN:
0004-637X
Resumen:
A flux of neutrons from an astrophysical source in the Galaxy can be detected
in the Pierre Auger Observatory as an excess of cosmic-ray air showers arriving
from the direction of the source. To avoid the statistical penalty for making
many trials, classes of objects are tested in combinations as nine ?target sets?,
in addition to the search for a neutron flux from the Galactic Center or from
the Galactic Plane. Within a target set, each candidate source is weighted in
proportion to its electromagnetic flux, its exposure to the Auger Observatory,
and its flux attenuation factor due to neutron decay. These searches do not find
evidence for a neutron flux from any class of candidate sources. Tabulated results
give the combined p-value for each class, with and without the weights, and also
the flux upper limit for the most significant candidate source within each class.
These limits on fluxes of neutrons significantly constrain models of EeV proton
emission from non-transient discrete sources in the Galaxy.