The X-ray source in non-magnetic cataclysmic variables.

Details The X-ray source in non-magnetic cataclysmic variables. The X-ray source in non-magnetic cataclysmic variables.

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...315..467v&link_type=abstract

Astronomy and Astrophysics, v.315, p.467-474

Astronomy and Astrophysics

Astrophysics

63

Accretion, Accretion Disks, Stars: Novae, Cataclysmic Variables, X-Rays: Stars

Scientific paper

We have analysed all available rosat pspc observations of non-magnetic cataclysmic variables. The VY Scl and non-SU UMa systems have harder X-ray spectra than the SU UMa and UX UMa systems. The old nova RR Pic has a very soft X-ray spectrum and might not be an ordinary non-magnetic cataclysmic variable. There appears to be no clear correlation of the X-ray temperature, the emission measure, or the X-ray luminosity with the accretion rate. However, we have found an anti-correlation between the observable emission measure and the orbital inclination of the system, from which we conclude that the X-ray emitting region is close to the white dwarf and has a size smaller than the white dwarf radius.

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