Statistics
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe..16g&link_type=abstract
Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo
Statistics
Keynote Session
Scientific paper
Although there is a nearly universal agreement that SNeIa are associated with the thermonuclear disruption of a CO white dwarf reaching the Chandrasekhar mass limit, the exact nature of their progenitors is still unknown. The single degenerate scenario envisages a white dwarf accreting matter from a non-degenerate companion in a binary system. Gravitational and nuclear energy of the accreted matter is released in the form of electromagnetic radiation and/or kinetic power of Classical Novae explosions prior to the Supernova event. We show that combined X-ray output of SNIa progenitors and statistics of Classical Novae predicted in the single degenerate scenario are inconsistent with X-ray and optical observations of nearby early type galaxies. No more than ˜5-10 percent of SNeIa associated with old stellar population can be produced via single degenerate evolutionary channel, unless our understanding of accretion and nuclear fusion on the white dwarf surface is fundamentally flawed.
Bogdan Akos
Gilfanov Marat
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