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Issues in the Blandford-Znajek Process for GRB Inner Engine

Hyun Kyu Lee·G. E. Brown·R. A. M. J. Wijers
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Abstract

Several issues regarding the Blandford-Znajek process are discussed to demonstrate that it can be an effective mechanism for powering the 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 disk power can be dissipated into black hole entropy. Within the framework of the force-free magnetosphere with the strong magnetic field, the 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.

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Hyun Kyu Lee, G. E. Brown, R. A. M. J. Wijers. 2000-01-19. Issues in the Blandford-Znajek Process for GRB Inner Engine. https://doi.org/10.1086/308937

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