Eccentric accretion discs
Eccentric accretion discs
复制标题
偏心吸积盘
DOI：
10.1093/mnras/266.3.583
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发表时间：
1994
影响因子：
4.8
通讯作者：
M. Prokhorov
中科院分区：
文献类型：
--
作者：
Y. Lyubarskij;K. Postnov;M. Prokhorov
我们得到的演化方程的非定常粘性吸积盘中的粒子轨道沿着开普勒椭圆是慢慢地向中心漂移。结果表明，对于任何合理的粘性定律，静止吸积是可能的，所有的轨道粒子以相同的偏心率移动。我们调查的稳定性圆盘偏心粒子运动，并发现不稳定的发展，一些粘度的法律。特别是，我们表明，正式应用的α-处方的粘度导致不稳定性
We obtain evolutionary equations for non-stationary viscous accretion discs in which particles are orbiting along Keplerian ellipses that are slowly drifting towards the centre. It is shown that, for any reasonable viscosity law, stationary accretion is possible, with all orbiting particles moving with the same eccentricity. We investigate the stability of circular discs with respect to eccentric particle motion and find that instability develops for some viscosity laws. In particular, we show that formal application of the α-prescription for the viscosity leads to instability