Winds from Hot Accretion Disks
Winds from Hot Accretion Disks
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来自热吸积盘的风
DOI：
10.1086/167990
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
M. Kusunose
中科院分区：
文献类型：
--
作者：
F. Takahara;R. Rosner;M. Kusunose
使用简化模型研究来自致密物体周围热吸积盘的流体动力风。假设比角动量沿着流线守恒并且重力的径向分量平衡各处的离心力，则求解圆盘上方的流动模式。还假设等温或多方关系。结果表明，存在一个临界解，在盘平面处流动为亚音速，超过临界点则变为超音速。计算了临界解的质量损失率，如果温度接近维里温度，则其结果与吸积率相当。因此，风损失将显着影响热双温吸积盘的特性。 10 参考文献
Hydrodynamical winds from hot accretion disks around compact objects are investigated using a simplified model. The flow pattern above the disk is solved assuming that specific angular momentum is conserved along a stream line and that the radial component of the gravitational force balances the centrifugal force everywhere. An isothermal or polytropic relation is also assumed. It is shown that there exists a critical solution for which the flow is subsonic at the disk plane and becomes supersonic beyond the critical point. The mass-loss rate is calculated for the critical solution, and it turns out to be comparable to the accretion rate if the temperature is near the virial temperature. Thus wind loss will significantly affect the properties of hot two-temperature accretion disks. 10 refs.