On the Dynamical Overstability of Radiative Blast Waves: The Atomic Physics of Shock Stability

Details On the Dynamical Overstability of Radiative Blast Waves: The Atomic Physics of Shock Stability On the Dynamical Overstability of Radiative Blast Waves: The Atomic Physics of Shock Stability

2002-07-26

arxiv.org/abs/astro-ph/0207582v1

Phys.Rev.Lett. 89 (2002) 125002

Astronomy and Astrophysics

Astrophysics

11 pages including 3 figures, accepted for publication in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.89.125002

Atomic physics calculations of radiative cooling are used to calculate criteria for the overstability of radiating shocks. Our calculations explain the measurement of shock overstability by Grun et al. and explain why the overstability was not observed in other experiments. The methodology described here can be especially useful in astrophysical situations where the relevant properties leading to an overstability can be measured spectroscopically, but the effective adiabatic index is harder to determine.

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