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Non-axisymmetric Instabilities in Shocked Accretion Flows

Published online by Cambridge University Press:  26 May 2016

Wei-Min Gu  and
Thierry Foglizzo
Wei-Min Gu
Affiliation:
Service d'Astrophysique, CEA/DSM/DAPNIA, CEA-Saclay, 91191 Gif-sur-Yvette, France
Thierry Foglizzo
Affiliation:
Service d'Astrophysique, CEA/DSM/DAPNIA, CEA-Saclay, 91191 Gif-sur-Yvette, France

Abstract

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We investigate the stability of shocked inviscid isothermal accretion flows onto a black hole. Of the two possible shock positions, the outer one is known to be stable to axisymmetric perturbations, while the inner one is unstable. Our recent work, however, shows that the outer shock is generally linearly unstable to non-axisymmetric perturbations. Eigenmodes and growth rates are obtained by numerical integration of the linearized equations. These results offer new perspectives to interpret the variability of X-ray binaries.

Type
Part 3 Theoretical Considerations
Information
Symposium - International Astronomical Union , Volume 214: High Energy Processes and Phenomena in Astrophysics , 2003 , pp. 95 - 96
Copyright
Copyright © Astronomical Society of the Pacific 2003 

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