XMM-Newton Proposal 02038401

Details XMM-Newton Proposal 02038401 XMM-Newton Proposal 02038401

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..203s&link_type=abstract

XMM-Newton Proposal ID #02038401

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Es Cet, Xmm-Newton Proposal 02038401

Scientific paper

We propose to obtain X-ray/UV observations of the 10.3 minute accreting binary system ES Cet. It is the brightest out of three recently identified ultra-compact accreting binaries with orbital periods of 5-10 minutes. These systems provide crucial insights into the physics of compact white dwarf binaries that are the dominant gravitational wave sources in our galaxy, and the progenitor population of Type Ia supernovae. The XMM-Newton lightcurves and spectra will be correlated with the strong optical variability, and compared to the two other ultra-compacts and longer period AM CVn binaries. These X-ray measurements will be crucial for establishing the nature of this enigmatic system, in particular the various accretion geometries that have been proposed.

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