Chin. Phys. Lett.  2003, Vol. 20 Issue (6): 965-968    DOI:
Original Articles |
A Toy Model for Advection Dominated Accretion Flows
WANG Ding-Xiong;LEI Wei-Hua; XIAO Kan
Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
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WANG Ding-Xiong, LEI Wei-Hua, XIAO Kan 2003 Chin. Phys. Lett. 20 965-968
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Abstract A toy disk model with advection dominated accretion onto a black hole is presented. The advection dominated accretion flows (ADAFs) are assumed to exist in the inner thick disk with rin < r < rout, and the disk is assumed to be geometrically thin for r > rout. Compared with Paczynski's toy model the thick disk is not limited to be 100% advective. It turns out that the inner radius rin depends not only on the outer radius rout but also on the ADAF parameters f and ε. The effects of the inner thick disk on the radiation efficiency and the temperature profile of the outer thin disk are discussed in details.

Keywords: 97.60.Lf      98.62.Mw      98.62.Js     
Published: 01 June 2003
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/Y2003/V20/I6/0965
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WANG Ding-Xiong
LEI Wei-Hua
XIAO Kan
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