Hostname: page-component-7479d7b7d-767nl Total loading time: 0 Render date: 2024-07-10T21:41:15.267Z Has data issue: false hasContentIssue false
  • English
  • Français

Hard X-Ray Properties of Cataclysmic Variables

Published online by Cambridge University Press:  12 April 2016

J.H. Swank
J.H. Swank*
Affiliation:
Laboratory for High Energy Astrophysics, NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771U.S.A.

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 production of hard X-rays in accretion onto degenerate dwarfs appears manifested by such sources as the magnetic variables AM Herculis and 3U0311-227 and the dwarf novae SS Cygni, EX Hydrae and U Geminorum. Upper limits on flux above 2 keV from Ariel 5 (Watson, Sherrington and Jameson 1978) and from the high energy detectors of the HEAO A2 experiment show that only a few others usually exhibit more than ~10-11 ergs cm-2s-1 or ~ 1031 ergs s-1. However, while there are only a few sources that these experiments could study, their behavior is complex (Swank et al. 1977a; Ricketts, King and Raine 1979; Swank et al. 1978; Mason, Cordova and Swank 1979). This paper is a brief summary of results for AM Her, EX Hya, SS Cyg and U Gem obtained with the high energy detectors of the HEAO A2 experiment from 2-60 keV and the Solid State Spectrometer Experiment (SSS) with the Monitor Proportional Counter (MPC) on the Einstein Observatory.

Type
Colloquium Session II
Information
International Astronomical Union Colloquium , Volume 53: White Dwarfs and Variable Degenerate Stars , August 1979 , pp. 135 - 138
Copyright
Copyright © The University of Rochester 1979

References

Cordova, F.A., Chester, T.J. and Garmire, G.P. 1979, preprint.Google Scholar
Cordova, F.A., Chester, T.J., Tuohy, I.R. and Garmire, G.P. 1979, Ap. J. in press.Google Scholar
Mason, K.O., Lampton, M., Charles, P. and Bowyer, S. 1978, Ap. J. (Letters) 226, L129.CrossRefGoogle Scholar
Mason, K., Cordova, F. and Swank, J. 1979 Proceedings of the XXI COSPAR/IAU Symposium in X-ray Astronomy, Pergamon Press Ltd., Oxford.Google Scholar
Ricketts, M.J., King, A.R. and Raine, D.J. 1979, M.N.R.A.S. 186, 233.CrossRefGoogle Scholar
Rothschild, R.E. et al. 1979, in preparation.Google Scholar
Swank, J., Lampton, M., Boldt, E., Holt, S. and Serlemitsos, P. 1977a, Ap. J. (Letters) 216, L71.CrossRefGoogle Scholar
Swank, J.H., Boldt, E.A., Holt, S.S., Lampton, M., Rothschild, R.E. and Serlemitsos, P.J. 1977b, Bull. A.A.S. 9, 591.Google Scholar
Swank, J.H., Boldt, E.A., Holt, S.S., Rothschild, R.E. and Serlemitsos, P.J. 1978, Ap. J. (Letters) 226, L133.CrossRefGoogle Scholar
Swank, J.H. et al. 1979, in preparation.Google Scholar
Watson, M.G., Sherrington, M.R. and Jameson, R.F. 1978, M.N.R.A.S. 184, 79p.CrossRefGoogle Scholar