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Breaking the 100 MG Barrier: The First High Field Magnetic CV

Published online by Cambridge University Press:  12 April 2016

Paula Szkody ,
Gary D. Schmidt ,
Paul S. Smith ,
Andrew Silber ,
D.W. Hoard ,
Gaghik Tovmassian ,
B.T. Gänsicke  and
D. de Martino
Paula Szkody
Affiliation:
Dept. of Astronomy, University of Washington, Box 351580, Seattle, WA 98195
Gary D. Schmidt
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721
Paul S. Smith
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721
Andrew Silber
Affiliation:
Dept. of Astronomy, University of Washington, Box 351580, Seattle, WA 98195
D.W. Hoard
Affiliation:
Dept. of Astronomy, University of Washington, Box 351580, Seattle, WA 98195
Gaghik Tovmassian
Affiliation:
Instituto de Astronomia, UNAM, Apdo. Post 877, 22860, Ensenada, B.C., Mexico
B.T. Gänsicke
Affiliation:
Universitat-Sternwarte, Geismarlandstrasse 11, D-37083, Gottingen, Germany
D. de Martino
Affiliation:
IUE Observatory, VILSPA-ESA, P.O. Box 50727, E-28080 Madrid, Spain

Abstract

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We present results from IUE and optical spectra, optical photometry and circular polarimetry during high and low states of the highly luminous soft X-ray cataclysmic variable AR UMa that identifies the primary in this system as a white dwarf with a magnetic field of 230 MG. The high magnetic field likely threads accretion blobs all the way from the secondary to below the surface of the white dwarf, resulting in a lack of polarised cyclotron emission and an extreme soft-X-ray luminosity during the high state.

Type
Part 9. Accretion Curtains and Funnels
Information
International Astronomical Union Colloquium , Volume 163: Accretion Phenomena and Related Outflows , 1997 , pp. 409 - 412
Copyright
Copyright © Astronomical Society of the Pacific 1997

References

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