论文标题
大量物体附近的哈勃流：球形对称情况的精确分析解决方案
The Hubble stream near a massive object: the exact analytical solution for the spherically-symmetric case
论文作者
论文摘要
巨大对象的重力场（例如，星系或簇）会扰乱哈勃流，从而降低其速度。可以直接观察到来自当今半径$ r_0 $的流的radial径速度的依赖关系$ v（r_0）$，并可能提供有关群集属性的有价值信息。我们为球形对称系统提供了精确的分析关系$ V（R_0）$。
The gravitational field of a massive object (for instance, of a galaxy group or cluster) disturbs the Hubble stream, decreasing its speed. Dependence $v(r_0)$ of the radial velocity of the stream from the present-day radius $r_0$ can be directly observed and may provide valuable information about the cluster properties. We offer an exact analytical relationship $v(r_0)$ for a spherically-symmetric system.
