Search for Point-Like Sources of Cosmic Rays with Energies above 1018.5 eV in the HiRes-I Monocular Data-Set
s Eye Collaboration
Abstract
We report the results of a search for point-like deviations from isotropy in the arrival directions of ultra-high energy cosmic rays in the northern hemisphere. In the monocular data set collected by the High-Resolution Fly's Eye, consisting of 1,525 events with energy exceeding 1018.5 eV, we find no evidence for point-like excesses. We place 90% c.l. upper limits less than or equal to 0.8 cosmic rays/km2yr on the flux from such sources as a function of position in the sky.
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