Type IA Thermonuclear Supernovae

Details Type IA Thermonuclear Supernovae Type IA Thermonuclear Supernovae

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.2801k&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #28.01; Bulletin of the American Astronomical Society, Vol. 26, p.1357

Physics

Scientific paper

Type Ia supernovae form a rather homogeneous class of bright objects well suited to be extragalactic distance indicators. But the homogeneity of SNIa's is not perfect. Some events deviate from ``normality'' both photometrically and spectroscopically. These deviations may be important clues to the explosion mechanism, and to the nature of the SNIa progenitors. Type Ia supernovae appear to be thermonuclear explosions of carbon-oxygen white dwarfs. The explosion may involve turbulent subsonic burning -- deflagration, supersonic burning -- detonation, or both. Physics, including multi-dimensional aspects, of the thermonuclear explosion will be discussed. The delayed detonation mechanism of the explosion, in which a subsonic deflagration becomes a supersonic detonation, give adequate kinetic energy and a range of nickel mass to account for both normal and subluminous Type Ia events.

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