Relationship between oscillatory thermal instability and dynamical thin-shell overstability of radiative shocks
Journal Article
·
· Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
- Space Science Division Code 7674L, Naval Research Laboratory, Washington, DC 20375 (United States)
We give an analytic treatment of radiative cooling behind radiative shocks following solutions given by Chevalier and Imamura. We demonstrate that within the approximation of a steady state radiative shock, the radiative cooling laws {lambda}{proportional_to}T{sup {alpha}} that give rise to the oscillatory instability modeled by Chevalier and Imamura in {gamma}=5/3 cooling gas are stable to the dynamical thin-shell overstability in this gas, and vice versa. We also show that the fundamental features of the dynamical overstability observed by Grun et al. can also be understood on these bases.
- OSTI ID:
- 20636888
- Journal Information:
- Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Vol. 70, Issue 5; Other Information: DOI: 10.1103/PhysRevE.70.057402; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-651X
- Country of Publication:
- United States
- Language:
- English
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