ZhETF, Vol. 127,
p. 744 (April 2005)
(English translation - JETP,
Vol. 100, No. 4,
available online at www.springer.com
TeV SIGNATURES OF COMPACT UHECR ACCELERATORS
Neronov A., Tinyakov P., Tkachev I.
Received: October 15, 2004
PACS: 98.70.Sa, 95.30.Gv, 98.62.Js, 98.70.Rz
We numerically study particle acceleration by the electric field induced near the horizon of a rotating supermassive (-) black hole embedded in the magnetic field B. We find that acceleration of protons to the energy eV is possible only at extreme values of M and B. We also find that the acceleration is very inefficient and is accompanied by a broad-band MeV-TeV radiation whose total power exceeds the total power emitted in ultra-high energy cosmic rays (UHECR) at least by a factor of 1000. This implies that if O(10) nearby quasar remnants were sources of proton events with energy E>1020 eV, then each quasar remnant would, e.g., overshine the Crab nebula by more than two orders of magnitude in the TeV energy band. Recent TeV observations exclude this possibility. A model in which O(100) sources are situated at 100-1000 Mpc is not ruled out and can be experimentally tested by present TeV γ-ray telescopes. Such a model can explain the observed UHECR flux at moderate energies eV.