Optically thin radiating shock waves and the formation of density inhomogeneities

Details Optically thin radiating shock waves and the formation of density inhomogeneities Optically thin radiating shock waves and the formation of density inhomogeneities

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...195...53c&link_type=abstract

Astrophysical Journal, vol. 195, Jan. 1, 1975, pt. 1, p. 53-60.

Astronomy and Astrophysics

Astrophysics

53

Density Distribution, Gas Flow, Optical Thickness, Shock Fronts, Supernova Remnants, Absorption Spectra, Astronomical Models, Flow Distribution, Hydrodynamic Equations, Radiant Cooling, Shock Waves

Scientific paper

It is found that the gas flow behind a perturbed, optically thin, radiating shock front tends to create density clumps. A two-dimensional hydrodynamic code is used to follow the shock created by an explosion. The shock is perturbed by a density fluctuation in the ambient medium. The growth of clumps is greatest near the time when radiative cooling first becomes significant. After a clump has formed, it tends to move ahead of the parent shock front due to its large momentum. The magnitude of the density enhancement is approximately proportional to the magnitude of the perturbing fluctuation. The results are discussed, with particular attention to the shock fronts in supernova remnants.

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