X-ray observations of the first known eclipsing ultra-compact binary system

Details X-ray observations of the first known eclipsing ultra-compact binary system X-ray observations of the first known eclipsing ultra-compact binary system

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop...94r&link_type=abstract

XMM-Newton Proposal ID #04023701

Computer Science

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Sdss J0926+3624, Xmm-Newton Proposal 04023701

Scientific paper

Ultra-compact systems are a group of stars in which a white dwarf accretes from a hydrogen deficient companion in a very short period binary (5-65 mins). They allow us to observe accretion flows of almost pure helium. The evolution of these systems is thought to be driven by gravitational radiation. Detailed predictions depend crucially upon parameters such as the component masses and mass transfer rate. With the recent discovery of the first eclipsing AM CVn we now have the opportunity to determine all the key parameters of one system. This proposal aims to measure its overall spectral energy distribution, which is important for determining its overall luminosity and mass transfer rate; to locate the sites of the X-ray and UV emission and map the extent of the accretion disc using eclipse mapping.

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