Detailed investigation of the outburst cycle of a helium dwarf nova

Details Detailed investigation of the outburst cycle of a helium dwarf nova Detailed investigation of the outburst cycle of a helium dwarf nova

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop..160r&link_type=abstract

XMM-Newton Proposal ID #06738001

Other

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Kl Dra

Scientific paper

The AM CVn systems are interacting binaries with orbital periods <70 minutes. Their spectra show almost no hydrogen and are therefore excellent laboratories for the study of helium dominated accretion flows. We have a monitoring programme to detect optical outbursts from these binaries and found that KL Dra undergoes outbursts every ~60 days. Observations made using Swift show the UV flux mirrors the optical. However, we were unable to draw firm conclusions regarding the X-ray component due to its low flux. We propose to obtain a series of observations of KL Dra over an outburst using XMM-Newton. These are necessary to drive forward theoretical models of disc instabilities these and other binaries such as X-ray transients.

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