A Most Unusual, Highly X-ray-Variable Cataclysmic Variable

Details A Most Unusual, Highly X-ray-Variable Cataclysmic Variable A Most Unusual, Highly X-ray-Variable Cataclysmic Variable

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...184.4505w&link_type=abstract

American Astronomical Society, 184th AAS Meeting, #45.05; Bulletin of the American Astronomical Society, Vol. 26, p.934

Astronomy and Astrophysics

Astronomy

Scientific paper

We have identified the serendipitous X-ray source RXJ051540+0104 with a previously-unknown cataclysmic variable. The soft X-ray light curve is similar to that of the single-poled polar VV Pup, except that the X-ray data suggest a period of ~8 hours. When faint, the soft X-ray emission is fairly steady; when bright the emission breaks up into discrete soft X-ray bursts. The X-ray spectrum at all times is well fit by a 47+/-4 eV blackbody. The optical spectrum is that of an accretion column. The He II/H beta ratio suggests an AM Her-like object. We have evidence for optical variability, and perhaps of optical eclipses. The X-ray light curve and the long orbital period appear unique in the annals of CVs. We will present the data and discuss possible models for this system. These data may provide confirmation for accreting blob models of polars.

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