UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Stability analysis of two-temperature radiative shocks; formulation, eigenfunctions, luminosity response and boundary conditions

Saxton, CJ; Wu, K; (2001) Stability analysis of two-temperature radiative shocks; formulation, eigenfunctions, luminosity response and boundary conditions. Monthly Notices of the Royal Astronomical Society , 324 (3) 659 - 684. 10.1046/j.1365-8711.2001.04343.x. Green open access

[thumbnail of 27365.pdf]
Preview
PDF
27365.pdf

Download (2MB)

Abstract

We present a general formulation for stability analyses of radiative shocks with multiple cooling processes, longitudinal and transverse perturbations, and unequal electron and ion temperatures. Using the accretion shocks of magnetic cataclysmic variables as an illustrative application, we investigate the shock instabilities by examining the eigenfunctions of the perturbed hydrodynamic variables. We also investigate the effects of varying the condition at the lower boundary of the post-shock flow from a zero-velocity fixed wall to several alternative types of boundaries involving the perturbed hydrodynamic variables, and the variations of the emission from the post-shock flow under different modes of oscillations. We found that the stability properties for flow with a stationary-wall lower boundary are not significantly affected by perturbing the lower boundary condition, and they are determined mainly by the energy-transport processes. Moreover, there is no obvious correlation between the amplitude or phase of the luminosity response and the stability properties of the system. Stability of the system can, however, be modified in the presence of transverse perturbation. The luminosity responses are also altered by transverse perturbation.

Type: Article
Title: Stability analysis of two-temperature radiative shocks; formulation, eigenfunctions, luminosity response and boundary conditions
Open access status: An open access version is available from UCL Discovery
DOI: 10.1046/j.1365-8711.2001.04343.x
Publisher version: http://dx.doi.org/10.1046/j.1365-8711.2001.04343.x
Language: English
Additional information: © 2001 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/27365
Downloads since deposit
46Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item