HYDRODYNAMIC ACCRETION OF GAS WITH ANGULAR-MOMENTUM ONTO A BLACK-HOLE

An analytical solution is obtained to a two-dimensional problem of ide al hydrodynamics that describes axisymmetric stationary accretion of m atter with nonzero angular momentum onto a nonrotating black hole. The asymptotic behavior of this solution is shown to be universal, i.e., it depends only slightly on the external conditions and the equation o f state of the medium. The derived solution confirms the existence of an accretion disk.