30TH INTERNATIONAL COSMIC RAY CONFERENCE HiRes Limits on Point-Like Sources of Cosmic Rays with Energy Above 10 eV
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چکیده
Point-like excesses have been alternately claimed and refuted in the direction of Cygnus X-3, BL-Lacertae objects, and others. We conduct a search for point-like deviations from isotropy in the arrival direction of ultra-high energy cosmic rays in the monocular data set collected by the High-Resolution Fly’s Eye. We find no evidence for point-like excesses and place a 90% c.l. upper limit of 0.8 hadronic cosmic rays/km×yr with energies greater than 10 eV for the northern hemisphere. We place tighter limits as a function of position in the sky.
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تاریخ انتشار 2008