A note on the Penrose process in rotating regular black holes
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866917007947988992 |
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| author | Kar, Anjan Dey, Ayan Kar, Sayan |
| author_facet | Kar, Anjan Dey, Ayan Kar, Sayan |
| contents | We investigate the Penrose process of energy extraction in the context of rotating regular black holes. For the Neves-Saa class of regular black hole solutions, which includes the Bardeen, Hayward and Fan-Wang spacetimes as special cases, the extraction efficiency is bounded above by the known value for Kerr spacetime. However, in the case of a new rotating regular black hole which does not have a Schwarzschild singular limit for zero rotation, the extraction efficiency can indeed become very large, as shown in our analysis here. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2510_11364 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A note on the Penrose process in rotating regular black holes Kar, Anjan Dey, Ayan Kar, Sayan General Relativity and Quantum Cosmology We investigate the Penrose process of energy extraction in the context of rotating regular black holes. For the Neves-Saa class of regular black hole solutions, which includes the Bardeen, Hayward and Fan-Wang spacetimes as special cases, the extraction efficiency is bounded above by the known value for Kerr spacetime. However, in the case of a new rotating regular black hole which does not have a Schwarzschild singular limit for zero rotation, the extraction efficiency can indeed become very large, as shown in our analysis here. |
| title | A note on the Penrose process in rotating regular black holes |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2510.11364 |