1110.6274 (Valeri P. Frolov)
Valeri P. Frolov
We study collision of particles in the vicinity of a horizon of a weakly
magnetized non-rotating black hole. In the presence of the magnetic field
innermost stable circular orbits (ISCO) of charged particles can be located
close to the horizon. We demonstrate that for a collision of two particles, one
of which is charged and revolving at ISCO and the other is neutral and falling
from infinity, the maximal collision energy formally can be arbitrary high.
This effect has some similarity with the recently discussed effect of high
center-of-mass energy for collision of particles in extremely rotating black
holes. We also demonstrate that for `realistic' astrophysical black holes their
ability to play the role of `accelerators' is in fact quite restricted.
View original:
http://arxiv.org/abs/1110.6274
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