A survey in hard X-rays for probing accretion and ejection in Symbiotic Stars

Details A survey in hard X-rays for probing accretion and ejection in Symbiotic Stars A survey in hard X-rays for probing accretion and ejection in Symbiotic Stars

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop..135s&link_type=abstract

XMM-Newton Proposal ID #06049203

Computer Science

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Hen 3-1341, Hd 149427, V1329 Cyg

Scientific paper

Symbiotic stars are interacting binaries, containing white dwarfs accreting at high rates from a wind of the red giant companion. These systems are possible progenitors for type Ia supernovae. The most crucial parameter in symbiotic systems is the accretion rate, since i) it determines (together with the mass) the lifetime of the white dwarf until a possible supernova explosion and ii) possibly explains the striking dichotomy concerning the fraction of objects with and without jets in symbiotics and CVs. In this project, we will search for hard X-ray emission from symbiotic stars which is the most valuable probe for the accretion process. We will determine the fraction of sources which produce hard X-rays, the mass distribution of white dwarfs, the distribution of accretion rates and their lifetimes.

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