Hostname: page-component-848d4c4894-r5zm4 Total loading time: 0 Render date: 2024-07-02T06:31:23.631Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Achilleos, N., Wickramasinghe, D. T., & Wu, K. 1992, MNRAS, 256, 80 Google Scholar
Bailey, J., Wickramasinghe, D. T., Ferrarlo, L., Hough, J. H., & Cropper, M. 1993, MNRAS, 261, L31 Google Scholar
Chanmugam, G. 1992, ARA&A, 30, 143 Google Scholar
Chanmugam, G., Langer, S. H., & Shaviv, G. 1985, ApJ, 299, L87 CrossRefGoogle Scholar
Chanmugam, G., Shaviv, G., & Wu, K. 1993, Annals Israel Phys. Soc., 10, 230 Google Scholar
Chevalier, R. A., & Imamura, J. N. 1982, ApJ, 261, 543 Google Scholar
Cropper, M. 1990, Space Sci. Rev., 54, 195 Google Scholar
Imamura, J. N. 1985, ApJ, 296, 128 Google Scholar
Imamura, J. N., Wolff, M. T., & Durisen, R. H. 1984, ApJ, 276, 667 Google Scholar
Imamura, J. N., Middleditch, J., Scargle, J. D., Steiman-Cameron, T. Y., Whitlock, L. A., Wolff, M. T., & Wood, K. S. 1993, ApJ, 419, 793 CrossRefGoogle Scholar
Langer, S. H., Chanmugam, G., & Shaviv, G. 1981, ApJ, 245, L23 CrossRefGoogle Scholar
Langer, S. H., Chanmugam, G., & Shaviv, G. 1982, ApJ, 258, 289 Google Scholar
Larsson, S. 1985, A&A, 145, L1 Google Scholar
Larsson, S. 1987, A&A, 181, L15 Google Scholar
Larsson, S. 1989, A&A, 217, 146 Google Scholar
Larsson, S. 1992, A&A, 265, 133 Google Scholar
Mason, K. O., Middleditch, J., Cordova, F. A., Jensen, K. A., Reichert, G., Murdin, P. G., Clark, D., & Bowyer, S. 1983, ApJ, 264, 575 Google Scholar
Middleditch, J. 1982, ApJ, 257, L71 Google Scholar
Ramseyer, T. F., Robinson, E. L., Zhang, E., Wood, J. H., & Steining, R. F. 1993, MNRAS, 260, 209 Google Scholar
Wolff, M. T., Gardner, J. H., & Wood, K. S. 1989, ApJ, 833, 843 Google Scholar
Wolff, M. T., Wood, K. S., & Imamura, J. N. 1991, ApJ, 375, L31 Google Scholar
Wickramasinghe, D. T. 1988, in Polarized Radiation of Circumstellar Origin, ed. Coyne, G. V. et al. (Vatican:Vatican Observatory), 1 Google Scholar
Wu, K., & Chanmugam, G. 1992, in ASP Conf. Ser. 29, Cataclysmic Variable Stars, ed. Vogt, N. (San Francisco:ASP), 223 Google Scholar
Wu, K., Chanmugam, G., & Shaviv, G. 1992, ApJ, 397, 232 Google Scholar
Wu, K., Chanmugam, G., & Shaviv, G. 1994, ApJ, 426, 664 Google Scholar
Wu, K., & Wickramasinghe, D. T. 1993, MNRAS, 260, 141 CrossRefGoogle Scholar