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Simulations of Quasi-periodic Oscillations in Accreting White Dwarfs

Published online by Cambridge University Press:  25 April 2016

Kinwah Wu ,
Helen Pongracic ,
Ganesar Chanmugam  and
Giora Shaviv
Kinwah Wu
Affiliation:
Research Centre for Theoretical Astrophysics, school of Physics, University of Sydney, NSW 2006, Australia. kinwah@physics.usyd.edu.au
Helen Pongracic
Affiliation:
Research Centre for Theoretical Astrophysics, school of Physics, University of Sydney, NSW 2006, Australia. kinwah@physics.usyd.edu.au
Ganesar Chanmugam
Affiliation:
Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA
Giora Shaviv
Affiliation:
Department of Physics andAsher Space Research Institute, Technion, 32000 Haifa, Israel
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Abstract

The stability of accretion shocks in magnetic white dwarfs is investigated. Shock oscillations are simulated numerically, and in the simulations bremsstrahlung and cyclotron cooling are considered in an explicit form. We have found that for shocks with magnetic fields lower than 10 MG, shock oscillations can be sustained; while for magnetic fields greater than 20 MG, the oscillations are suppressed.

Keywords

accretionaccretion disksshock wavesstars: binaries: closestars: white dwarfs
Type
Magnetic Fields, Disks and Jets: A Workshop organised by the ANU Astrophysical Theory Centre The ANU Astrophysical Theory Centre
Information
Publications of the Astronomical Society of Australia , Volume 13 , Issue 1 , January 1996 , pp. 93 - 96
Copyright
Copyright © Astronomical Society of Australia 1996

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