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The Comisso-Asenjo mechanism is a novel mechanism proposed recently to extract energy from black holes through magnetic reconnection of the surrounding charged plasma, in which the magnetic field plays a crucial role. In this work, we…

General Relativity and Quantum Cosmology · Physics 2024-07-22 Shao-Jun Zhang

Recently, it has been demonstrated by Comisso and Asenjo that magnetic reconnection processes in the ergosphere of a Kerr black hole can provide us with a promising mechanism for extracting the rotational energy from it. In this paper, we…

General Relativity and Quantum Cosmology · Physics 2023-09-25 Zhen Li , Xiao-Kan Guo , Faqiang Yuan

Recently, a class of exact solutions describing rotating black holes immersed in a uniform magnetic field has been proposed, and various properties of such black holes remain unclear. This paper aims to explore how to extract energy based…

General Relativity and Quantum Cosmology · Physics 2025-08-20 Xiao-Xiong Zeng , Ke Wang

In this paper, we investigate the power and efficiency of energy extraction through magnetic reconnection in the Kerr-Sen-AdS$_{4}$ black hole, with a primary focus on both the circular orbit and plunging region. We plot the allowed regions…

General Relativity and Quantum Cosmology · Physics 2025-07-18 Xiao-Xiong Zeng , Ke Wang

Magnetic reconnection is a process that plays a critical role in plasma astrophysics by converting magnetic energy into plasma particle energy. Recently, Comisso and Asenjo demonstrated that rapid magnetic reconnection within a black hole's…

High Energy Astrophysical Phenomena · Physics 2023-10-11 Mohsen Khodadi , David F. Mota , Ahmad Sheykhi

Magnetic reconection provides a new avenue to extract energy from a rotating black hole in astrophysical scenarios. There have been many works studying the feasibility of extracting energy via magnetic reconnection in the scheme of…

General Relativity and Quantum Cosmology · Physics 2024-11-08 Ye Shen , Ho-Yun YuChih , Bin Chen

Based on the magnetic reconnection mechanism, this study investigates how to extract energy effectively from an accelerating Kerr black hole in the plunging region and circular orbit region. After introducing the properties of accelerating…

General Relativity and Quantum Cosmology · Physics 2025-10-03 Ke Wang , Xiao-Xiong Zeng

Recently, Comisso and Asenjo proposed a novel mechanism for harnessing energy from black holes through magnetic reconnection. Our study focuses on exploring the utilization of this mechanism on Konoplya-Rezzolla-Zhidenko (KRZ) parametrized…

General Relativity and Quantum Cosmology · Physics 2024-04-30 Shao-Jun Zhang

It was demonstrated by Comisso and Asenjo that the magnetic reconnection in the ergosphere is a promising mechanism to extract energy from the rotating Kerr black hole. In this work, we investigate the role of Comisso-Asenjo mechanism in…

General Relativity and Quantum Cosmology · Physics 2023-08-02 Zhen Li , Faqiang Yuan

In the Penrose process and the Blandford-Znajek mechanism, the rotational energy of a black hole (BH) is extracted via particle fission and magnetic tension, respectively. Recently, inspired by a fundamental trait in plasma astrophysics…

General Relativity and Quantum Cosmology · Physics 2022-01-25 Mohsen Khodadi

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…

General Relativity and Quantum Cosmology · Physics 2025-10-14 Zhengwei Cheng , Songbai Chen , Jiliang Jing

In this work, we provide a thorough analysis of energy extraction via magnetic reconnection, a novel mechanism recently proposed by Comisso and Asenjo, for a Kerr-Newman black hole immersed in a perfect fluid dark matter (PFDM) background.…

General Relativity and Quantum Cosmology · Physics 2025-06-11 Shanshan Rodriguez , Alex Sidler , Leo Rodriguez , L. R. Ram-Mohan

Many efforts were made in order to better understand the energy extraction via magnetic reconnection from a rotating black hole, following the work of Comisso and Asenjo in 2021. We also tried to make some progress in our previous works, in…

General Relativity and Quantum Cosmology · Physics 2026-05-12 Ho-Yun YuChih , Ye Shen

In this paper, we employ the Comisso-Asenjo magnetic reconnection (MR) mechanism to investigate energy extraction from a rapidly rotating five-dimensional Kerr black hole (BH) with single- and two-rotation configurations. We analyze the…

General Relativity and Quantum Cosmology · Physics 2026-05-01 Ikhtiyor Eshtursunov , Sanjar Shaymatov

Magnetic reconnection within a highly magnetized plasma has been seen as a viable mechanism to extract the energy from a rotating black hole, as it can generate negative energy plasmoids in the ergoregion. For a typical accreting black…

General Relativity and Quantum Cosmology · Physics 2024-11-08 Bin Chen , Yehui Hou , Junyi Li , Ye Shen

In this paper, we study the magnetic reconnection process of energy extraction from a rapidly rotating Kerr-Newman-modified-gravity (MOG) black hole by investigating the combined effect of black hole charge and the MOG parameter. We explore…

General Relativity and Quantum Cosmology · Physics 2024-07-19 Sanjar Shaymatov , Mirzabek Alloqulov , Bobomurat Ahmedov , Anzhong Wang

In this work, we investigate the magnetic reconnection (MR) process as a mechanism for energy extraction from a rapidly rotating Buchdahl star (BS), one of the most compact horizonless objects that can, in principle, possess a spin…

General Relativity and Quantum Cosmology · Physics 2026-03-19 Ikhtiyor Eshtursunov , Sanjar Shaymatov

Works on the energy extraction from a rotating black hole via magnetic reconnection attract more attentions in recent years. Discussions on this topic, however, are often based on many simplifications, such as assuming a circularly flowing…

High Energy Astrophysical Phenomena · Physics 2024-12-05 Ye Shen , Ho-Yun YuChih

In this paper, we study the energy extraction from Kerr-AdS black holes following the magnetic reconnection process. The parameter space regions that satisfy the energy extraction condition, as well as the efficiency and power of the…

General Relativity and Quantum Cosmology · Physics 2025-12-02 Bo Zhao , Chao-Hui Wang , Shao-Wen Wei

Black holes can accumulate a large amount of energy, responsible for highly energetic astrophysical phenomena Recently, fast magnetic reconnection (MR) of the magnetic field was proposed as a new way to extract energy and in this paper, we…

General Relativity and Quantum Cosmology · Physics 2022-09-21 Amodio Carleo , Gaetano Lambiase , Leonardo Mastrototaro
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