Electromagnetic Quantities in Black Hole Magnetosphere

汪定雄; 马任意; 雷卫华; 姚国政

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Electromagnetic Quantities in Black Hole Magnetosphere

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Some electromagnetic quantities in the black hole (BH) magnetosphere are discussed by considering the coexistence of the Blandford-Znajek process and the magnetic coupling process. These quantities are (i) flux of electromagnetic energy and angular momentum transferred between the BH and the disc, (ii) poloidal currents flowing on the horizon and disc, (iii) poloidal electric field on the horizon, (iv) toroidal magnetic field in the BH magnetosphere,and (v) voltage drop across the magnetic coupling region on the horizon. It turns out that these quantities are determined mainly by three parameters: (i) the positions relative to the corotation magnetic surface, (ii) the BH spin, and (iii) the power-law index for the variation of the magnetic field on the disc.

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《中国物理快报：英文版》 |2004年第4期|764-766|共3页
作者
汪定雄; 马任意; 雷卫华; 姚国政;
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作者单位

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;

Department of Physics, Beijing Normal University, Beijing 100875;

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Electromagnetic Quantities in Black Hole Magnetosphere

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