Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-26T03:50:29.199Z Has data issue: false hasContentIssue false
  • English
  • Français

The Magnetic Fields of Single White Dwarfs

Published online by Cambridge University Press:  12 April 2016

J.D. Landstreet
J.D. Landstreet*
Affiliation:
Department of Astronomy, University of Western Ontario

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.

The first magnetic field in a white dwarf was discovered nine years ago (Kemp et al. 1970). Since that time magnetic fields have been detected in a total of 12 single white dwarfs and four white dwarfs in close binary systems. These magnetic fields have been found both through the Zeeman splitting and shifting of spectral lines and through the continuum circular (and sometimes linear) polarisation which a field may produce in the optical flux of a star in which it occurs. The fields so far detected appear to range between 3 MG and more than 100 MG. For stars with fields less than about 40 MG, both the observed Zeeman shifts of spectral lines and the observed circular polarisation appear to be reasonably well understood. For stars with fields above this level, attempts so far to identify absorption features in the spectra and to account for the continuum polarisation have not been very successful; indeed, there is considerable dispute about the fundamental mechanism producing the continuum polarisation, especially the linear component.

Type
Colloquium Session V
Information
International Astronomical Union Colloquium , Volume 53: White Dwarfs and Variable Degenerate Stars , August 1979 , pp. 297 - 312
Copyright
Copyright © The University of Rochester 1979

References

Angel, J.R.P. 1977, Ap. J., 216, 1.Google Scholar
Angel, J.R.P. 1978, Ann. Rev. Astr. Ap., 16, 487.CrossRefGoogle Scholar
Angel, J.R.P., Carswell, R., Strittmatter, P.A., Beaver, E.A. and Harms, R. 1974a, Ap. J. (Letters), 194, L47.Google Scholar
Angel, J.R.P., Hintzen, P., and Landstreet, J.D. 1975, Ap. J. (Letters), 196, L27.CrossRefGoogle Scholar
Angel, J.R.P., Hintzen, P., Strittmatter, P.A. and Martin, P.G. 1974, Ap. J. (Letters), 190, L71.Google Scholar
Angel, J.R.P., and Landstreet, J.D. 1970a, Ap. J. (Letters), 160, L147.Google Scholar
Angel, J.R.P., and Landstreet, J.D. 1970b, Ap. J. (Letters), 162, L61.CrossRefGoogle Scholar
Angel, J.R.P., and Landstreet, J.D. 1974, Ap. J., 191, 457.Google Scholar
Angel, J.R.P., Landstreet, J.D., and Borra, E.F. 1980, preprint.Google Scholar
Angel, J.R.P., Landstreet, J.D., and Illing, R.E. 1972, Ap. J. (Letters), 175, L85.Google Scholar
Brown, D.N., Rich, A., Williams, W.L., and Vauclair, G. 1977, Ap. J. 218, 227.CrossRefGoogle Scholar
Fontaine, G., Thomas, J.H., and Van Horn, H.M. 1973, Ap. J., 184, 911.CrossRefGoogle Scholar
Garstang, R.H. 1977, Rep. Prog. Phys., 40, 105.Google Scholar
Green, R., Schmidt, M., Stockman, H.S., Angel, J.R.P., Thompson, I., and Landstreet, J.D. 1980, preprint.Google Scholar
Greenstein, J.L., and Boksenberg, A. 1978, MNRAS, 185, 823.CrossRefGoogle Scholar
Ingham, W.H., Brecher, K., and Wasserman, I. 1976, Ap. J., 207, 518.Google Scholar
Kemic, S.B. 1974a, J.I.L.A. Report No. 113.Google Scholar
Kemic, S.B. 1974b, Ap. J., 193, 213.Google Scholar
Kemp, J.C. 1970, Ap. J., 162, 169.CrossRefGoogle Scholar
Kemp, J.C. 1977a, Ap. J., 213, 794.CrossRefGoogle Scholar
Kemp, J.C. 1977b, unpublished data.Google Scholar
Kemp, J.C., Swedlund, J.B., and Evans, B.D. 1970, Phys. Rev. Letters, 24, 1211.Google Scholar
Kemp, J.C., Swedlund, J.B., Landstreet, J.D., and Angel, J.R.P. 1970, Ap. J. (Letters), 161, L77.CrossRefGoogle Scholar
Kraus, J.D. 1966, Radio Astronomy (New York: McGraw-Hill), ch. 5.Google Scholar
Lamb, F.K., and Sutherland, P.G. 1974, in IAU Symposium No. 53, Physics of Dense Matter, ed. Hansen, C.J. (Dordrecht: Reidel), p. 265.Google Scholar
Landi Degl’Innocenti, E. 1976, Ap. J., 209, 208.Google Scholar
Landstreet, J.D. 1966, Ph.D. thesis, Columbia University (unpublished).Google Scholar
Landstreet, J.D., and Angel, J.R.P. 1974, Ap. J. (Letters), 190, L25.Google Scholar
Landstreet, J.D., and Angel, J.R.P. 1975, Ap. J., 196, 819.CrossRefGoogle Scholar
Landstreet, J.D., and Angel, J.R.P. 1980, in preparation.Google Scholar
Liebert, J., Angel, J.R.P., and Landstreet, J.D. 1975, Ap. J. (Letters), 202, L139.CrossRefGoogle Scholar
Liebert, J., Angel, J.R.P., Stockman, H.S., Spinrad, H., and Beaver, E. A. 1977, Ap. J., 214, 457.Google Scholar
Liebert, J., Stockman, H.S., Angel, J.R.P., and Beaver, E.A. 1978, Ap. J. 225, 181.Google Scholar
Martin, B., and Wickramasinghe, D.T. 1978, M.N.R.A.S., 183, 533.Google Scholar
Martin, B., and Wickramasinghe, D.T. 1979a, preprint.Google Scholar
Martin, B., and Wickramasinghe, D.T. 1979b, preprint.Google Scholar
Martin, B., and Wickramasinghe, D.T. 1979c, Proc. Astr. Soc. Aust., in press.Google Scholar
Moss, D. 1979, M.N.R.A.S., 187, 601.Google Scholar
Praddaude, H.D. 1972, Phys. Rev. A., 6, 1321.Google Scholar
Rosi, L.A., Zimmerman, R.L., and Kemp, J.C. 1976, Ap.J., 209, 868.CrossRefGoogle Scholar
Sazonov, V.N., and Chernomordik, V.V. 1975, Ap. Space Sci, 32, 355.Google Scholar
Schmid-Burgk, J. and Wehrse, R. 1976, paper presented at 2nd European Workshop on White Dwarfs, Sept. 10–14, 1976, Osservatorio Astronomico di Roma.Google Scholar
Schwarzschild, M. 1950, Ap.J., 112, 222.CrossRefGoogle Scholar
Shipman, H.L. 1971, Ap.J., 167, 165.CrossRefGoogle Scholar
Smith, E.R., Henry, R.J.W., Surmelian, G.L., and O’Connell, R.F. 1973, Ap.J., 179, 659.Google Scholar
Wickramasinghe, D.T., and Martin, B. 1978, Proc. Astr. Soc. Aust., 3, 269.Google Scholar
Wickramasinghe, D.T., and Martin, B. 1979, M.N.R.A.S., 188, 165.CrossRefGoogle Scholar