Propagation of an explosive pulse in an embedded, rotating, light gaseous disk

The propagation of axisymmetric, nonlinear density perturbations, produced in the central part of an embedded, rotating gaseous disk, perturbations in the gravitational field of which can be neglected, is studied. An approximation of continuous solutions that we used earlier is discussed and a numerical method of characteristics is used to integrate the system of two-dimensional hydrodynamic equations. A qualitative description of the motion of the peaks far from the center of the disk is obtained analytically. The evolution of an explosive perturbation over the disk is traced with allowance for dissipative forces.[PUBLICATION ABSTRACT]