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Stability of Accretion Shocks with a Composite Cooling Function

Published online by Cambridge University Press:  16 May 2016

Curtis J. Saxton ,
Kinwah Wu  and
Helen Pongracic
Curtis J. Saxton
Affiliation:
Special Research Centre for Theoretical Astrophysics, School of Physics, University of Sydney, NSW 2006, Australia
Kinwah Wu
Affiliation:
Special Research Centre for Theoretical Astrophysics, School of Physics, University of Sydney, NSW 2006, Australia
Helen Pongracic
Affiliation:
Air Operations Division, Aeronautical and Maritime Research Laboratory, DSTO, Vic. 3001, Australiasaxton@physics.usyd.edu.au
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Abstract

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Stability of accretion onto magnetic white dwarfs is investigated via perturbation analysis. We consider a cooling function with composite power laws, and the power-law indices are appropriate for bremsstrahlung and optically thick cyclotron cooling. We find that the presence of cyclotron cooling generally suppresses the instability, consistent with numerical simulations by other investigators.

Keywords

accretionshock wavesstars: close binariesstars: white dwarfs
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 14 , Issue 2 , 1997 , pp. 164 - 169
Copyright
Copyright © Astronomical Society of Australia 1997

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