Single- And Double-degenerate Models Of Type Ia Sne, Nuclear-burning White Dwarfs, Spin, And Supersoft X-ray Sources

Details Single- And Double-degenerate Models Of Type Ia Sne, Nuclear-burning White Dwarfs, Spin, And Supersoft X-ray Sources Single- And Double-degenerate Models Of Type Ia Sne, Nuclear-burning White Dwarfs, Spin, And Supersoft X-ray Sources

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.3304d&link_type=abstract

American Astronomical Society, HEAD meeting #12, #33.04

Astronomy and Astrophysics

Astronomy

Scientific paper

Over the past decade we have established that there are too few supersoft x-ray sources (SSSs) in galaxies of all types to support the hypothesis that the majority of Type Ia supernovae (SNeIa) progenitors pass through a long SSS phase. Yet, both single- and double-degenerate models predict long epochs during which a white dwarf receives mass at a rate compatible with nuclear burning. We explore the ways in which the link between nuclear-burning and SSS-like behavior can be broken. We also touch on the role that angular momentum (spin-up and spin-down) may have in changing the appearance of the progenitors just prior to explosion, and also the explosion and post-explosion signatures.

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