SIMBAD references

2013ApJ...762...75W - Astrophys. J., 762, 75 (2013/January-2)

Self-shielding of soft x-rays in type Ia supernova progenitors.


Abstract (from CDS):

There are insufficient super-soft (∼0.1 keV) X-ray sources in either spiral or elliptical galaxies to account for the rate of explosion of Type Ia supernovae (SNe Ia) in either the single-degenerate or the double-degenerate scenarios. We quantify the amount of circumstellar matter that would be required to suppress the soft X-ray flux by yielding a column density in excess of 1023/cm2. We summarize evidence that appropriate quantities of matter are extant in SNe Ia and in recurrent novae that may be supernova precursors. The obscuring matter is likely to have a large, but not complete, covering factor and to be substantially non-spherically symmetric. Assuming that much of the absorbed X-ray flux is re-radiated as blackbody radiation in the UV, we estimate that ≲ 100 sources might be detectable in the Galaxy Evolution Explorer All-sky Survey.

Abstract Copyright:

Journal keyword(s): binaries: general - dust, extinction - novae, cataclysmic variables - supernovae: general - white dwarfs - X-rays: stars

Simbad objects: 5

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