The Pierre Auger Observatory has sensitivity to neutron fluxes produced at cosmic ray acceleration sites inthe Galaxy. Because of relativistic time dilation, the neutron mean decay length is (9.2 × E) kpc, where E is theneutron energy in EeV. A blind search over the field of view of the Auger Observatory for a point-like excess yieldsno statistically significant candidates. The neutron flux upper limit is reported as a celestial function for three differentenergy thresholds. Also a search for excesses of cosmic rays in the direction of selected populations of candidate Galacticsources is performed. The bounds obtained constrain models for persistent discrete sources of EeV cosmic rays in theGalaxy.
展开▼
