Magnetic Coupling of a Rotating Black Hole with the SurroundingAccretion Disc

汪定雄; 肖看; 雷卫华

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Magnetic Coupling of a Rotating Black Hole with the SurroundingAccretion Disc

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The evolution characteristics and energy extraction of a rotating black hole are investigated by considering the magnetic coupling with the surrounding accretion disc. It is found that both the mass and spin of the black hole might be reduced by the joint effects of disc accretion and magnetic coupling, provided that the latter is stronger than the former. The efficiencies of the two energy mechanisms are calculated and compared to a variety of parameters. In addition, the validity of the laws of black hole thermodynamics is discussed.

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《中国物理快报：英文版》 |2001年第8期|1150-1152|共3页
作者
汪定雄; 肖看; 雷卫华;
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Department of Physics, Huazhong University of Science and Technology, Wuhan 430074;

Department of Physics, Huazhong University of Science and Technology, Wuhan 430074;

Department of Physics, Huazhong University of Science and Technology, Wuhan 430074;

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正文语种 chi
中图分类物理学;
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Magnetic Coupling of a Rotating Black Hole with the SurroundingAccretion Disc

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