On particle collisions in the gravitational field of the Kerr black hole

被引:87
|
作者
Grib, A. A. [1 ,2 ]
Pavlov, Yu. V. [2 ,3 ]
机构
[1] Herzen Univ, Theoret Phys & Astron Dept, St Petersburg 191186, Russia
[2] A Friedmann Lab Theoret Phys, St Petersburg 191023, Russia
[3] Russian Acad Sci, Inst Engn Mech, St Petersburg 199178, Russia
关键词
Black holes; Particle collisions; Cosmic rays; ACTIVE GALACTIC NUCLEI; ENERGY COSMIC-RAYS; DARK-MATTER; SUPERHEAVY PARTICLES; SPECTRUM;
D O I
10.1016/j.astropartphys.2010.12.005
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Scattering of particles in the gravitational field of Kerr black holes is considered. It is shown that scattering energy of particles in the centre of mass system can obtain very large values not only for extremal black holes but also for nonextremal ones existing in Nature. This can be used for explanation of still unresolved problem of the origin of ultrahigh energy cosmic rays observed in Auger experiment. Extraction of energy after the collision is investigated. It is shown that due to the Penrose process the energy of the particle escaping the hole at infinity can be large. Contradictions in the problem of getting high energetic particles escaping the black hole are resolved. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:581 / 586
页数:6
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