Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-10-29
Astropart.Phys.23:175-189,2005
Astronomy and Astrophysics
Astrophysics
22 pages, 3 PS figures
Scientific paper
10.1016/j.astropartphys.2004.12.
We consider various classes of persistent extragalactic astrophysical sources which have been suggested in literature as possible emitters of ultra-high-energy cosmic rays (UHECR). We compare the strength of the claimed correlations by a uniform procedure for all classes of sources by making use of the AGASA, Yakutsk and HiRes stereo data. BL Lac type objects correlate with the cosmic rays detected by all three independent experiments and are more probably, compared to other astrophysical sources, related to the UHECR origin. With the account of the Galactic magnetic field (not possible for the HiRes data at the moment), apart of BL Lac type objects, unidentified gamma-ray sources may be correlated with AGASA and Yakutsk cosmic rays.
Gorbunov Dmitry S.
Troitsky Sergey V.
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