Hard X-ray properties of magnetic cataclysmic variables

Details Hard X-ray properties of magnetic cataclysmic variables Hard X-ray properties of magnetic cataclysmic variables

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1248..201s&link_type=abstract

X-RAY ASTRONOMY 2009; PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES: Proceedings of the International Confer

Astronomy and Astrophysics

Astronomy

X-Ray Sources (Astronomical), X-Ray Emission Spectra, Accretion Disks, X-Ray Spectra, X-Ray Sources, X-Ray Bursts, X-Ray Emission Spectra And Fluorescence, Accretion And Accretion Disks, X-Ray

Scientific paper

We have constructed a new sample of magnetic cataclysmic variables (mCVs) by cross-correlating candidate sources detected in INTEGRAL/IBIS observations against catalogues of known CVs and included mCVs observed with either Swift/BAT or SUZAKU/HXD. Here we review the properties arising from this hard X-ray selected sample and find that most hard X-ray detected mCVs have Pspin/Porb<0.1 above the period gap. The observational features of the Pspin-Porb plane are discussed in the context of mCV evolution scenarios. We also present evidence for correlations between hard X-ray spectral hardness and Pspin, Porb and Pspin/Porb. An attempt to explain the observed correlations is made in the context of mCV evolution and accretion footprint geometries on the white dwarf surface.

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