Chin. Phys. Lett.  2001, Vol. 18 Issue (3): 466-468    DOI:
Original Articles |
Investigation on the Quasi-Cycle of Black Hole Spin
WANG Ding-Xiong;XIAO Kan;LEI Wei-Hua
Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
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WANG Ding-Xiong, XIAO Kan, LEI Wei-Hua 2001 Chin. Phys. Lett. 18 466-468
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Abstract A reverse condition of accretion flow and its constraints on black hole spin in the quasi-cycle are proposed. It is shown that the necessary condition for the quasi-cycle is that the closed magnetic field lines must dominate over the open ones at the horizon. The efficiency of converting accreted rest mass into radiation energy in the quasi-cycle is proved to increase as the strength of the magnetic transfer process. In addition, a general expression for the efficiency is derived.
Keywords: 97.60.Lf      98.62.Mw      98.62.Js     
Published: 01 March 2001
PACS:  97.60.Lf (Black holes)  
  98.62.Mw (Infall, accretion, and accretion disks)  
  98.62.Js (Galactic nuclei (including black holes), circumnuclear matter, and bulges)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2001/V18/I3/0466
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