Wave Propagation in Accretion Disks with Self-Gravity
LIU Xiao-Ci1,2, YANG Lan-Tian1, WU Shao-Ping1, DING Shi-Xue1,3
1Department of Physics, and Institute of Astrophysics, Huazhong Normal University, Wuhan 430079
2Department of Physics, Hainan Normal College, Haikou 571158
3Department of Physics, Xiangfan Normal College, Xiangfan 441053
Wave Propagation in Accretion Disks with Self-Gravity
LIU Xiao-Ci1,2;YANG Lan-Tian1;WU Shao-Ping1;DING Shi-Xue1,3
1Department of Physics, and Institute of Astrophysics, Huazhong Normal University, Wuhan 430079
2Department of Physics, Hainan Normal College, Haikou 571158
3Department of Physics, Xiangfan Normal College, Xiangfan 441053
Abstract： We extend the research by Lubow and Pringle of axisymmetric waves in accretion disks to the case where self-gravity of disks should be considered. We derive and analyse the dispersion relations with the effect of self-gravity. Results show that self-gravity extends the forbidden region of the wave propagation: for high frequency p-modes, self-gravity makes the wavelength shorter and the group velocity larger; for low frequency g-modes, the effect is opposite.
2001, Vol. 18 
