Initial X-ray Measures of New Ultracompact AM CVn Binaries from SDSS

Details Initial X-ray Measures of New Ultracompact AM CVn Binaries from SDSS Initial X-ray Measures of New Ultracompact AM CVn Binaries from SDSS

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..115a&link_type=abstract

XMM-Newton Proposal ID #04029502

Other

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Sdssj1208+3550, Sdssj1411+4812, Xmm-Newton Proposal 04029502

Scientific paper

AM CVns are extremely rare, double-degenerate cataclysmic variables, arguably encompassing the shortest period binaries known. They are of high interest as possible supernova progenitors, and especially as likely sources of gravity waves. We've found five new AM CVns in SDSS, a major expansion of this elite subclass, and propose initial XMM-Newton flux measures for the two most recent discoveries (the others are slated for Chandra). These initial X-ray measures will constrain their accretion rates, a key parameter in understanding the evolutionary interplay between mass-transfer and gravitational radiation. The proposed observations will also sensitively assess the feasibility of follow-on, more detailed X-ray timing and/or spectral studies.

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