We model hydrodynamic interactions of an old supernova remnant shock wave with a small interstellar gas cloud, taking into account the effects of thermal conduction and radiative losses. In particular, we consider a representative case of a Mach 30 shock impacting on an isolated cloud with density contrast χ = 10 with respect to the ambient medium. Thermal conduction appears to be effective in suppressing the Kelvin-Helmholtz and Rayleigh-Taylor instabilities which would develop at the cloud boundaries. We demonstrate that the radiative losses play a crucial role in the dynamics of the shock-cloud interaction, dominating evolution of the shocked cloud medium.
Peres, G., Orlando, S., Reale, F., Rosner, R., Plewa, T., Siegel, A. (2004). Crushing of interstellar gas clouds in supernova remnants: The role of thermal conduction and radiative losses. In PLASMAS IN THE LABORATORY AND IN THE UNIVERSE: NEW INSIGHTS AND NEW CHALLENGES (pp.326-329). American Institute of Physics Inc. [10.1063/1.1718476].
Crushing of interstellar gas clouds in supernova remnants: The role of thermal conduction and radiative losses
PERES, Giovanni;REALE, Fabio;
2004-01-01
Abstract
We model hydrodynamic interactions of an old supernova remnant shock wave with a small interstellar gas cloud, taking into account the effects of thermal conduction and radiative losses. In particular, we consider a representative case of a Mach 30 shock impacting on an isolated cloud with density contrast χ = 10 with respect to the ambient medium. Thermal conduction appears to be effective in suppressing the Kelvin-Helmholtz and Rayleigh-Taylor instabilities which would develop at the cloud boundaries. We demonstrate that the radiative losses play a crucial role in the dynamics of the shock-cloud interaction, dominating evolution of the shocked cloud medium.
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