Hostname: page-component-745bb68f8f-mzp66 Total loading time: 0 Render date: 2025-01-11T12:13:27.907Z Has data issue: false hasContentIssue false
  • English
  • Français

The Magnetic white dwarfs in AM Her variables

Published online by Cambridge University Press:  12 April 2016

D.T. Wickramasinghe
D.T. Wickramasinghe*
Affiliation:
Department of Mathematics,Australian National UniversityCANBERRA A.C.T.

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

There are now some 15 cataclysmic variables that have been recognised as being of the AM Her type. They are characterised by the presence of variable circular and linear polarisation in the optical and IR spectral regions, approaching 40% in some systems. The polarized radiation has been attributed to high harmonic cyclotron emission from hot (∼ 5 – 30 Kev) plasma located at accretion shocks near the poles of a highly magnetised (∼ 20 – 60 MG) white dwarf primary. There is hope that the study of the rich variety of phenomena exhibited by these systems will eventually enable us to probe the magnetic field structure of the underlying white dwarfs, perhaps even in more detail than has been possible with the isolated magnetic white dwarfs (Wickramasinghe (1987), Schmidt (1987)).

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 114: White Dwarfs , 1989 , pp. 314 - 323
Copyright
Copyright © Springer-Verlag 1989

References

Bailey, J., 1988 in “Polarized radiation of circumstellar origin”, Coyne, G., Magalhaes, A., Moffat, A.F.J., Schulte-Ladbeck, R.E., Tapia, S. and Wickramasinghe, D.T., eds; Vatican press.Google Scholar
Cropper, M., 1988, Mon. Not. Roy. Ast. Soc. (in press).Google Scholar
Ferrario, L., and Wickramasinghe, D.T., 1988 (these proceedings).Google Scholar
Ferrario, L., Wickramasinghe, D.T. and Tuohy, I.R., 1988, Ap.J. (submitted)Google Scholar
Meggitt, S.M.A. and Wickramasinghe, D.T., 1988, Mon. Not. Roy. Ast. Soc. (in press).Google Scholar
Piirola, V., 1988 in “Polarized radiation of circumstellar origin” Coyne, G., et al. eds; Vatican press.Google Scholar
Schmidt, G., 1987, I.A.U. Coll. No.95 on Faint Blue Stars, Davis Philip, A.G., Hayes, D.S. and Liebert, J.W., eds L. Davis Press.Google Scholar
Schmidt, G., 1988 in “Polarized radiation of circumstellar origin” Coyne, G. et al. eds, Vatican press.Google Scholar
Stockman, H.S., 1988 in “Polarized radiation of circumstellar origin” Coyne, G. et al. eds, Vatican press.Google Scholar
Wickramasinghe, D.T., 1988 in “Polarized radiation of circumstellar origin” Coyne, G. et al. eds, Vatican press.Google Scholar
Wickramasinghe, D.T., 1987, I.A.U. Coll. No 95 on Faint blue stars, Davis Philip, A.G., Hayes, D.S. and Liebert, J.W., eds, L. Davis Press.Google Scholar
Wickramasinghe, D.T. and Martin, B., 1985, Mon. Not. Roy. Ast. Soc. 212, 353.CrossRefGoogle Scholar
Wickramasinghe, D.T. and Ferrario, L., 1988a, Ap. J. (in press)Google Scholar
Wickramasinghe, D.T. and Ferrario, L., 1988b, Ap. J. (in preparation)Google Scholar
Wickramasinghe, D.T., Visvanathan, N.V. and Tuohy, I.R., 1987, Ap. J. 318, 326.CrossRefGoogle Scholar
Wu, K. and Chanmugam, G., 1988, Ap. J. (in press.)Google Scholar