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arXiv · 1707.03175

Energy extraction from a Konoplya-Zhidenko rotating non-Kerr black hole

Fen Long·Songbai Chen·Shangyun Wang·Jiliang Jing
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Abstract

We have investigated the properties of the ergosphere and the energy extraction by Penrose process in a Konoplya-Zhidenko rotating non-Kerr black hole spacetime. We find that the ergosphere becomes thin and the maximum efficiency of energy extraction decreases as the deformation parameter increases. For the case with $a M$, we find that the maximum efficiency can reach so high that it is almost unlimited as the positive deformation parameter is close to zero, which is a new feature of energy extraction in such kind of rotating non-Kerr black hole spacetime.

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Fen Long, Songbai Chen, Shangyun Wang, Jiliang Jing. 2017-07-11. Energy extraction from a Konoplya-Zhidenko rotating non-Kerr black hole. https://doi.org/10.1016/j.nuclphysb.2017.10.028

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