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.
(Galactic nuclei (including black holes), circumnuclear matter, and bulges)
引用本文:
WANG Ding-Xiong;LEI Wei-Hua; XIAO Kan. A Toy Model for Advection Dominated Accretion Flows[J]. 中国物理快报, 2003, 20(6): 965-968.
WANG Ding-Xiong, LEI Wei-Hua, XIAO Kan. A Toy Model for Advection Dominated Accretion Flows. Chin. Phys. Lett., 2003, 20(6): 965-968.
2003, Vol. 20 
