Causal Viscosity in Global Dynamics of Advection-Dominated Accretion Flows Around Black Holes
GU Wei-Min1, LU Ju-Fu1,2
1Center for Astrophysics, University of Science and Technology of China, Hefei 230026
2National Astronomical Observatories, Chinese Academy of Sciences
Causal Viscosity in Global Dynamics of Advection-Dominated Accretion Flows Around Black Holes
GU Wei-Min1;LU Ju-Fu1,2
1Center for Astrophysics, University of Science and Technology of China, Hefei 230026
2National Astronomical Observatories, Chinese Academy of Sciences
Abstract： We modify the viscosity to disappear inside the sonic point in the advection-dominated accretion flows (ADAF’s) around black holes, and obtain the causally connected, physically self-consistent ADAF-thin disk solutions. Such global solutions differ from previous ones in quantitative details. The results show that the range of variation for the value of the outer boundary Rout is very large, from 30Rg to 106Rg. There is a narrow region for which the rotating motion of the flow is super-Keplerian in each global solution. An example global solution with the causal viscosity is given explicitly, for which Rs = 2.28Rg and j = 1.7564(cRg).
GU Wei-Min;LU Ju-Fu;. Causal Viscosity in Global Dynamics of Advection-Dominated Accretion Flows Around Black Holes
[J]. 中国物理快报, 2000, 17(2): 151-153.
GU Wei-Min, LU Ju-Fu,. Causal Viscosity in Global Dynamics of Advection-Dominated Accretion Flows Around Black Holes
. Chin. Phys. Lett., 2000, 17(2): 151-153.
2000, Vol. 17 
