Journal Article

Effects of the Blandford—Znajek process on the evolution of the central black holes of accretion discs

D. X. Wang, Y. Lu and L. T. Yang

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 294, issue 4, pages 667-672
Published in print March 1998 | ISSN: 0035-8711
Published online March 1998 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-8711.1998.01236.x
Effects of the Blandford—Znajek process on the evolution of the central black holes of accretion discs

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Abstract

The effects of the Blandford-Znajek (BZ) process on the evolution of the central black holes of accretion discs are investigated by an analytical method and numerical calculations in this paper. It is shown that the BZ process reduces the rates of change of some parameters of the black hole, such as mass, angular momentum, dimensionless angular momentum and temperature, and the evolution of the central black hole towards the extreme Kerr black hole is depressed effectively. However, the rate of change of entropy of the central black hole is augmented in the BZ process. In addition, the consistency of the BZ process with the three laws of black hole thermodynamics is discussed.

Keywords: accretion, accretion discs; black hole physics

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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