Magnetic reconnection and energy extraction from a Konoplya–Zhidenko rotating non-Kerr black hole

IF 4.8 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2025-01-18 DOI:10.1140/epjc/s10052-025-13746-5

Fen Long, Shangyun Wang, Songbai Chen, Jiliang Jing

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Abstract

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.

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Konoplya-Zhidenko旋转非kerr黑洞的磁重联和能量提取

近年来，磁重联作为一种新的能量提取机制受到了广泛的关注，它依赖于圈层内磁力线的快速重联。本文研究了带额外变形参数的Konoplya-Zhidenko旋转非克尔黑洞时空中通过磁重联提取能量的性质。结果表明，正变形参数扩大了能量提取的可能范围，提高了磁重联与Blandford-Znajek过程的最大功率、最效率和最大能量提取比。这意味着在Konoplya-Zhidenko旋转非克尔黑洞时空中，人们可以通过磁重联提取比在克尔黑洞情况下更多的能量。这些变形参数的影响可能为未来黑洞的天文观测和引力理论的验证提供有价值的线索。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.