ROTATING NON-KERR BLACK HOLE AND ENERGY EXTRACTION
Journal Article
·
· Astrophysical Journal
The properties of the ergosphere and energy extraction by the Penrose process in a rotating non-Kerr black hole are investigated. It is shown that the ergosphere is sensitive to the deformation parameter {epsilon} and the shape of the ergosphere becomes thick as parameter {epsilon} increases. It is of interest to note that, compared with the Kerr black hole, the deformation parameter {epsilon} can enhance the maximum efficiency of the energy extraction process greatly. Especially for the case of a > M, the non-Kerr metric describes a superspinning compact object and the maximum efficiency can exceed 60%, while it is only 20.7% for the extremal Kerr black hole.
- OSTI ID:
- 22037131
- Journal Information:
- Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 751; ISSN ASJOAB; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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