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Oscillatory instability of radiative shocks with multiple cooling processes

Saxton, CJ; Wu, K; Pongracic, H; Shaviv, G; Wu, K; (1998) Oscillatory instability of radiative shocks with multiple cooling processes. Monthly Notices of the Royal Astronomical Society , 299 (3) 862 - 876. 10.1046/j.1365-8711.1998.01839.x. Green open access

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Abstract

The stand-off shock formed in the accretion flow on to a stationary wall, such as the surface of a white dwarf, may be thermally unstable, depending on the cooling processes which dominate the post-shock flow. Some processes lead to instability, while others tend to stabilize the shock. We consider competition between the destabilizing influence of thermal bremsstrahlung cooling, and a stabilizing process which is a power law in density and temperature. Cyclotron cooling and processes which are of order 1, 3/2 and 2 in density are considered. The relative efficiency and power-law indices of the second mechanism are varied, and particular effects on the stability properties and frequencies of oscillation modes are examined.

Type: Article
Title: Oscillatory instability of radiative shocks with multiple cooling processes
Open access status: An open access version is available from UCL Discovery
DOI: 10.1046/j.1365-8711.1998.01839.x
Publisher version: http://dx.doi.org/10.1046/j.1365-8711.1998.01839.x
Language: English
Additional information: © 1998 RAS Definitive versions of articles pre-2013 are available at http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2966, now published by http://mnras.oxfordjournals.org
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/51144
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