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VOLUME 80 | ISSUE 3 | PAGE 167
Testing the correlations between ultra-high-energy cosmic rays and BL Lac type objects with HiRes stereoscopic data
D. S. Gorbunov+, P. G. Tinyakov*+, I. I. Tkachev^{\triangle +}, S. V. Troitsky+
+Institute for Nuclear Research RAS, 117312, Moscow, Russia
*Service de Physique Théorique, CP 225, Université Libre de Bruxelles, B-1050 Brussels, Belgium
^\triangleCERN Theory Division, CH-1211 Geneva 23, Switzerland

PACS: 98.54.Cm, 98.70.Sa
Previously suggested correlations of BL Lac type objects with the arrival directions of the ultra-high-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 the 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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