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Testing the correlations between ultrahigh-energy cosmic rays and BL Lac-type objects with HiRes stereoscopic data |
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| Authors: | D. S. Gorbunov P. G. Tinyakov I. I. Tkachev S. V. Troitsky |
| Affiliation: | (1) Institute for Nuclear Research, Russian Academy of Sciences, Moscow, 117312, Russia;(2) Service de Physique Theorique, CP 225, Universite Libre de Bruxelles, B-1050 Brussels, Belgium;(3) CERN Theory Division, CH-1211 Geneva 23, Switzerland |
| Abstract: | Previously suggested correlations of BL Lac-type objects with the arrival directions of the ultrahigh-energy cosmic ray primaries are tested by making use of the HiRes stereoscopic data. The results of the study support the conclusion that BL Lacs may be cosmic ray sources and suggest the presence of a small (a few percent) fraction of neutral primaries at E > 1019 eV. |
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