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Title: Issues Regarding the Blandford-Znajek Process as a Gamma-Ray Burst Inner Engine

Abstract

Several issues regarding the Blandford-Znajek process are discussed to demonstrate that it can be an effective mechanism for powering gamma-ray bursts. Using a simple circuit analysis, it is argued that the disk power increases the effective power of the black hole accretion disk system, although a part of the disk power can be dissipated into black hole entropy. Within the framework of a force-free magnetosphere with a strong magnetic field, a magnetically dominated MHD flow is found to support the Blandford-Znajek process, and it is demonstrated that the possible magnetic repulsion by the rotating black hole will not affect the efficiency substantially. (c) 2000 The American Astronomical Society.

Authors:
; ;
Publication Date:
OSTI Identifier:
20217586
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 536; Journal Issue: 1; Other Information: PBD: 10 Jun 2000; Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMIC GAMMA BURSTS; ACCRETION DISKS; BLACK HOLES; INTERSTELLAR MAGNETIC FIELDS; ROTATIONAL STATES; POWER TRANSMISSION; THEORETICAL DATA

Citation Formats

Lee, Hyun Kyu, Brown, G. E., and Wijers, R. A. M. J. Issues Regarding the Blandford-Znajek Process as a Gamma-Ray Burst Inner Engine. United States: N. p., 2000. Web. doi:10.1086/308937.
Lee, Hyun Kyu, Brown, G. E., & Wijers, R. A. M. J. Issues Regarding the Blandford-Znajek Process as a Gamma-Ray Burst Inner Engine. United States. doi:10.1086/308937.
Lee, Hyun Kyu, Brown, G. E., and Wijers, R. A. M. J. Sat . "Issues Regarding the Blandford-Znajek Process as a Gamma-Ray Burst Inner Engine". United States. doi:10.1086/308937.
@article{osti_20217586,
title = {Issues Regarding the Blandford-Znajek Process as a Gamma-Ray Burst Inner Engine},
author = {Lee, Hyun Kyu and Brown, G. E. and Wijers, R. A. M. J.},
abstractNote = {Several issues regarding the Blandford-Znajek process are discussed to demonstrate that it can be an effective mechanism for powering gamma-ray bursts. Using a simple circuit analysis, it is argued that the disk power increases the effective power of the black hole accretion disk system, although a part of the disk power can be dissipated into black hole entropy. Within the framework of a force-free magnetosphere with a strong magnetic field, a magnetically dominated MHD flow is found to support the Blandford-Znajek process, and it is demonstrated that the possible magnetic repulsion by the rotating black hole will not affect the efficiency substantially. (c) 2000 The American Astronomical Society.},
doi = {10.1086/308937},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 536,
place = {United States},
year = {2000},
month = {6}
}