Acceleration of particles by black holes: kinematic explanation

Details Acceleration of particles by black holes: kinematic explanation Acceleration of particles by black holes: kinematic explanation

2011-04-25

arxiv.org/abs/1104.4802v2

Phys.Rev.D84:024007,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

14 pages. New version includes also contents of arXiv:1105.0303, so both massive and massless cases are considered. Combined v

Scientific paper

10.1103/PhysRevD.84.024007

A new simple and general explanation of the effect of acceleration of particles by black holes to infinite energies in the centre of mass frame is suggested. It is based on kinematics of particles moving near the horizon. This effect arises when particles of two kinds collide near the horizon. For massive particles, the first kind represents a particle with the generic energy and angular momentum (I call them "usual"). Near the horizon, such a particle has a velocity almost equal to that of light in the frame that corotates with a black hole (the frame is static if a black hole is static). The second kind (called "critical") consists of particles with the velocity v

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