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Evidence of Complex Field Structure in the Magnetic White Dwarf in EXO 033319–2554.2

Published online by Cambridge University Press:  12 April 2016

Lilia Ferrario  and
D. T. Wickramasinghe
Lilia Ferrario
Affiliation:
The Australian National University, Canberra, Australia
D. T. Wickramasinghe
Affiliation:
The Australian National University, Canberra, Australia

Abstract

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We present detailed theoretical models for polarisation and spectroscopic data from EXO 033319–2554.2 that suggest the presence of two cyclotron emission regions of field strengths B ∼ 5.6 × 107 G and B ∼ 2.8 × 107 G, and which are separated by about 90° on the surface of the white dwarf. The large difference in magnetic field strength and the proximity of the two regions imply a more complex field structure than that of a centred dipole field distribution if it is assumed that the regions are connected by closed field lines.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 114: White Dwarfs , 1989 , pp. 324 - 328
Copyright
Copyright © Springer-Verlag 1989

References

Bailey, J.A., Ferrano, L., Tuohy, I.R., Wickramasinghe, D.T., and Hough, J.H. 1987, IAU Circ, # 4517.Google Scholar
Berriman, G., and Smith, P.S. 1988, Ap. J., 329, L97.CrossRefGoogle Scholar
Beuermann, K., Thomas, H.C., and Schwope, A. 1988, Astr. Ap., 195, L15.Google Scholar
Ferrario, L., Wickramasinghe, D.T., and Tuohy, I.R. 1988, Ap. J., submitted.Google Scholar
Ferrario, L., Wickramasinghe, D.T., Bailey, J.A., Tuohy, I.R., and Hough, J.H. 1988, Ap. J., in press.Google Scholar
Meggitt, S.M.A., and Wickramasinghe, D.T. 1988, M. N. R. A. S., in press.Google Scholar
Osborne, J.P., Giommi, P., Angelini, L., Tagliaferri, G., and Stella, L. 1988, Ap. J., 328, L45.Google Scholar
Wickramasinghe, D.T., and Meggitt, S.M.A. 1985, M. N. R. A. S., 216, 857.Google Scholar