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The Hard X-Ray Spectra of EF Eri and Other CVs

Published online by Cambridge University Press:  12 April 2016

C. Done ,
J. P. Osborne  and
A. P. Beardmore
C. Done
Affiliation:
Department of Physics, University of Durham, Durham DH1 3LE, UK
J. P. Osborne
Affiliation:
Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK
A. P. Beardmore
Affiliation:
Department of Physics, The Open University, Milton Keynes, MK7 6AA, UK

Abstract

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Reflection of the X-ray emission from the surface of the white dwarf should be present in all hard X-ray emitting CV systems. It is clearly identified in the Ginga 2… 20 keV spectra of the polars AM Her and EF Eri, and also in the quiescent spectra of the dwarf novae SS Cyg. The inclusion of the hard reflection spectrum lowers the derived continuum temperature, so resolving a long standing problem of the mismatch of the iron line and continuum properties, and, with more realistic multi-temperature continuua, the derived shock temperatures are close to those expected from theoretical models of a strong shock.

Type
Polar Systems
Information
International Astronomical Union Colloquium , Volume 158: Cataclysmic Variables and Related Objects , 1996 , pp. 205 - 208
Copyright
Copyright © Kluwer 1996

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