Particle acceleration of two general particles in the background of rotating Ayón-Beato-García black holes
Abstract
The rotating Ayón-Beato-García (ABG) black holes, apart from mass (M) and rotation parameter (a), has an additional charge Q and encompassed the Kerr black hole as particular case when Q=0. We demonstrate the ergoregions of rotating ABG black holes depend on both rotation parameter a and charge Q, and the area of the ergoregions increases with increase in the values of Q. Bañados, Silk and West (BSW) demonstrated that an extremal Kerr black hole can act as a particle accelerator with arbitrarily high center-of-mass energy (E_{CM}). We study the collision of two general particles with different masses falling freely from rest in the equatorial plane of a rotating ABG black hole near the event horizon and find that the E_{CM} of two colliding particles is arbitrarily high when one of the particles takes a critical value of angular momentum in the extremal case, whereas for nonextremal case E_{CM} for a pair of colliding particles is generically divergent at the inner horizon, and explicitly studying the effect of charge Q on the E_{CM} for ABG black hole. In particular, our results in the limit Q→ 0 reduce exactly to vis-à-vis those of the Kerr black hole.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- January 2019
- DOI:
- 10.1007/s10509-019-3498-z
- arXiv:
- arXiv:1805.00804
- Bibcode:
- 2019Ap&SS.364...10A
- Keywords:
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- Black hole;
- Particle accelerator;
- Regular black hole;
- General Relativity and Quantum Cosmology
- E-Print:
- 17 pages, 6 figures