https://doi.org/10.1140/epjc/s10052-025-13746-5
Regular Article - Theoretical Physics
Magnetic reconnection and energy extraction from a Konoplya–Zhidenko rotating non-Kerr black hole
1
School of Mathematics and Physics, University of South China, 421001, Hengyang, People’s Republic of China
2
College of Physics and Electronic Engineering, Hengyang Normal University, 421002, Hengyang, People’s Republic of China
3
Department of Physics, Institute of Interdisciplinary Studies, Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education, Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, 410081, Changsha, Hunan, People’s Republic of China
4
Center for Gravitation and Cosmology, College of Physical Science and Technology, Yangzhou University, 225009, Yangzhou, People’s Republic of China
Received:
31
October
2024
Accepted:
22
December
2024
Published online:
18
January
2025
Recently, magnetic reconnection has attracted considerable attention as a novel energy extraction mechanism, relying on the rapid reconnection of magnetic field lines within the ergosphere. We have investigated the properties of the energy extraction via magnetic reconnection in a Konoplya–Zhidenko rotating non-Kerr black hole spacetime with an extra deformation parameter. Our results show that the positive deformation parameter expands the possible region of energy extraction and improves the maximum power, maximum efficiency, and the maximum ratio of energy extraction between magnetic reconnection and the Blandford–Znajek process. This means that in the Konoplya–Zhidenko rotating non-Kerr black hole spacetime one can extract more energy via magnetic reconnection than in the Kerr black hole case. These effects of the deformation parameter may provide valuable clues for future astronomical observations of black holes and verification of gravity theories.
© The Author(s) 2025
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