论文标题
关于非磁积盘的动力学
On dynamics of nonmagnetic accretion disks
论文作者
论文摘要
研究了中央紧凑型体附近的轴对称积聚磁盘。在非粘性磁盘的情况下，证明所有中型圆速度的所有解决方案都是不稳定的。因此，可以实现积聚磁盘中的纯流体动力湍流。众所周知的论点被认为是无声的积聚磁盘必须是次言式磁盘。还证明，通常用于天体物理学的常规渐近解决方案可能会导致错误的结论。事实证明，可以通过涡旋运动以极高的精度近似层状粘性磁盘。假设湍流气体倾向于以最小的损失流动，我们已经表明湍流磁盘往往是开普勒式的。
Axisymmetric accretion disks in vicinity of a central compact body are studied. In the case of non-viscous disk it is proven that all solutions for the midplane circular velocity are unstable. Hence, the pure hydrodynamic turbulence in accretion disks is possible. It is disproved the well-known arguments that an inviscid accretion disk must be sub-Keplerian. It is also demonstrated that the regular asymptotic solutions, often used in astrophysics, can lead to erroneous conclusions. It is proven that a laminar viscous disk can be approximated with a great precision by the vortex motion. Assuming that a turbulent gas tends to flow with minimal losses, we have shown that a turbulent disk tends to be Keplerian.
