| Original Articles |
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Electromagnetic Quantities in Black Hole Magnetosphere |
| WANG Ding-Xiong1;MA Ren-Yi1;LEI Wei-Hua1;YAO Guo-Zheng2 |
| 1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
2Department of Physics, Beijing Normal University, Beijing 100875
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| Cite this article: |
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WANG Ding-Xiong, MA Ren-Yi, LEI Wei-Hua et al 2004 Chin. Phys. Lett. 21 766-766 |
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Abstract 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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| Keywords:
97.60.Lf
98.62.Mw
98.62.Js
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Published: 01 April 2004
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| PACS: |
97.60.Lf
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(Black holes)
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98.62.Mw
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(Infall, accretion, and accretion disks)
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98.62.Js
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(Galactic nuclei (including black holes), circumnuclear matter, and bulges)
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