Extracting energy from plunging region of a Kerr-Taub-NUT black hole by magnetic reconnection

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

The European Physical Journal C Pub Date : 2025-10-11 DOI:10.1140/epjc/s10052-025-14894-4

Zhengwei Cheng, Songbai Chen, Jiliang Jing

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Abstract

We have studied the energy extraction from a Kerr-Taub-NUT black hole via magnetic reconnection occurring in the plunging region. Our results show that the gravitomagnetic charge suppresses the energy extraction process through magnetic reconnection and reduces the corresponding extraction efficiency, which is opposite to the effects of the black hole spin and the magnetization parameter. Finally, we treat the energy extraction process through magnetic reconnection as a mechanism to revisit the problem of the observed jet power and radiative efficiency of GRS 1915+105. Our results show that the allowed black hole parameter region originating from the jet power has an intersection with the region from the radiative efficiency. This means that with this mechanism related to magnetic reconnection the Kerr-Taub-NUT metric can simultaneously explain the observed jet power and radiative efficiency for GRS 1915+105, which is not explained by other mechanisms in previous studies.

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利用磁重联从克尔-陶布-努特黑洞俯冲区提取能量

我们研究了克尔-陶布-努特黑洞在暴跌区通过磁重联提取能量的过程。我们的研究结果表明，引力磁电荷抑制了通过磁重联的能量提取过程，降低了相应的提取效率，这与黑洞自旋和磁化参数的影响相反。最后，我们将通过磁重联提取能量的过程作为一种机制，重新探讨了GRS 1915+105观测到的射流功率和辐射效率问题。我们的结果表明，由射流功率产生的允许黑洞参数区域与由辐射效率产生的区域有一个交点。这意味着利用这一与磁重联有关的机制，Kerr-Taub-NUT度量可以同时解释GRS 1915+105观测到的射流功率和辐射效率，这是以往研究中其他机制无法解释的。

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.