- Issues regarding the Blandford-Znajek process as a gamma-ray burst inner engine
- Astrophysical Journal
- Volume | Issue number
- 536 | 1
- Pages (from-to)
- Number of pages
- Document type
- Faculty of Science (FNWI)
- Anton Pannekoek Institute for Astronomy (API)
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.
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- ©2000 American Astronomical Society
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