BL Lacertae are probable sources of the observed ultrahigh energy cosmic rays 
P. G. Tinyakov, I. I. Tkachev
^{+}Institute of Theoretical Physics, University of Lausanne, CH1015 Lausanne, Switzerland ^{*}CERN Theory Division, CH1211 Geneva 23, Switzerland Institute for Nuclear Research RAS, 117312 Moscow, Russia

PACS: 98.70.Sa

Abstract
We calculate angular correlation function between
ultrahigh energy cosmic rays (UHECR) observed by Yakutsk and AGASA
experiments, and most powerful BL Lacertae objects. We find
significant correlations which correspond to the probability of
statistical fluctuation less than 10^{4}, including penatly for
selecting the subset of brightest BL Lacs. We conclude that some of BL
Lacs are sources of the observed UHECR and present a list of most
probable candidates.


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