Unusual Evolution Characteristics in Black Hole Disk-Accretion,

Chin. Phys. Lett.

2000, Vol. 17

Issue (6): 463-465 DOI:

Original Articles

Unusual Evolution Characteristics in Black Hole Disk-Accretion,

WANG Ding-Xiong

Department of Physics, Huazhong University of Science and Technology, Wuhan 430074

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WANG Ding-Xiong 2000 Chin. Phys. Lett. 17 463-465

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Abstract It is shown that evolution characteristics of black hole (BH) parameters in the pure disk-accretion are determined uniquely by BH spin parameter a_*. Some unusual evolution characteristics of the parameters of BH accretion disks, such as angular velocity, temperature and event horizon radius, are investigated in both thin and thick disk-accretion. And the corresponding turning points, a_*^c. are derived. In addition, two characteristic functions describing the evolution of BH parameters are derived for thin and thick disks, respectively.

Keywords: 97.60.Lf 98.62.Mw 04.70.-s

Published: 01 June 2000

PACS:	97.60.Lf	(Black holes)
	98.62.Mw	(Infall, accretion, and accretion disks)
	04.70.-s	(Physics of black holes)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2000/V17/I6/0463

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