Radial Shocks in Advection-Dominated Accretion Flows
Around Black Holes
GU Wei-Min1, LU Ju-Fu1,2,3
1 Center for Astrophysics, University of Science and
Technology of China, Hefei 230026
2 National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
3 Department of Physics, Xiamen University, Xiamen 361005
Radial Shocks in Advection-Dominated Accretion Flows
Around Black Holes
GU Wei-Min1;LU Ju-Fu1,2,3
1 Center for Astrophysics, University of Science and
Technology of China, Hefei 230026
2 National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
3 Department of Physics, Xiamen University, Xiamen 361005
Abstract： We have solved the set of equations for advection-dominated accretion flows (ADAFs) around black holes, and found a new class of global solutions with standing radial shocks.Such α-X-type shocks may exist in flows when 0 ≤ α < 0.05. An example solution is given explicitly, for which α=0.01 and γ=1.5. The shock position is Rsh=8.68Rg, which is between the inner sonic point Rs1=3.88Rg and the outer sonic point Rs2=85.92Rg.
2001, Vol. 18 
