High energy processes in the vicinity of the Kerr's black hole horizon

Details High energy processes in the vicinity of the Kerr's black hole horizon High energy processes in the vicinity of the Kerr's black hole horizon

2011-05-08

arxiv.org/abs/1105.1540v2

Int. J. Mod. Phys. A 26, No. 22 (2011) 3856-3867

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, 2 figures, added some formulas and one reference

Scientific paper

10.1142/S0217751X11054310

Two particle collisions close to the horizon of the rotating nonextremal black hole are analyzed. It is shown that high energy of the order of the Grand Unification scale in the centre of mass of colliding particles can be obtained when there is a multiple collision - the particle from the accretion disc gets the critical momentum in first collision with the other particle close to the horizon and then there is a second collision of the critical particle with the ordinary one. High energy occurs due to a great relative velocity of two particles and a large Lorentz factor. The dependence of the relative velocity on the distance to horizon is analyzed, the time of movement from the point in the accretion disc to the point of scattering with large energy as well as the time of back movement to the Earth are calculated. It is shown that they have reasonable order.

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