Deceleration Effect of Magnetic Field on Black Hole Accretion Disks  

作　　者：WANG Ding-Xiong 汪定雄(Department of Physics,Huazhong University of Science and Technology,Wuhan 430074)

机构地区：[1]Department of Physics,Huazhong University of Science and Technology,Wuhan 430074

出　　处：《Chinese Physics Letters》2000年第2期148-150,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No.19773005.

摘　　要：The deceleration effect of magnetic field near the horizon of a spinning black hole (BH) of accretion disk is investigated in the Blandford-Znajek (BZ) process. It is shown that rates of change with respect to time for both the angular velocities of BH horizon and accreting particles at the inner edge of an accretion disk are reduced in the BZ process, behaving with non-monotonous evolution characteristics. This result implies that the magnetic field near the BH horizon has & deceleration effect not only on the spinning BH but also on the surrounding accretion disk.

关 键 词：HORIZON ACCRETION process. 

分 类 号：P14[天文地球—天体物理]