Structure of Acoustic Perturbations in Heat-Releasing Medium

This paper is focused on describing of probable wave structures in gaseous and plasma medium with energy source depended on temperature and density. Such media can be found in natural and laboratory condition. Previously it has been shown, that isentropic instability presence can result in formation of autowave pulses sequence. In this paper we will show differences in autowave perturbation structures. The cases of gaseous heat-releasing medium and plasma heat-releasing medium with regard for influence of magnetic field will be considered. In our investigation we have used full equation system of hydrodynamics and magnetohydrodynamics for meda with heat-release. The autowave structure parameters have been defined by the use of nonlinear equations obtained up to quantities of the second order of smallness.