Investigation on the Quasi-Cycle of Black Hole Spin
Wang Ding-Xiong; Xiao Kan; Lei Wei-Hua; Wang Ding-Xiong; Department of Physics, Huazhong University of Science and Technology, Wuhan 430074; Xiao Kan; Department of Physics, Huazhong University of Science and Technology, Wuhan 430074; Lei Wei-Hua; Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
Журнал:
Chinese Physics Letters
Дата:
2001-03-01
Аннотация:
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 with the strength of the magnetic transfer process. In addition, a general expression for the efficiency is derived.
213.8Кб