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arXiv · astro-ph/0611902

Spectropolarimetric diagnostics of thermonuclear supernova explosions

Lifan Wang·Dietrich Baade·Ferdinando Patat
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Abstract

Even at extragalactic distances, the shape of supernova ejecta can be effectively diagnosed by spectropolarimetry. We present here results for 17 Type Ia supernovae that allow a statistical study of the correlation among the geometric structures and other observable parameters of Type Ia supernovae. These observations suggest that their ejecta typically consist of a smooth, central iron rich core and an outer layer with chemical asymmetries. The degree of this peripheral asphericity is correlated with the light-curve decline rate of Type Ia supernovae. These observations lend strong support to delayed-detonation models of Type Ia supernovae.

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Lifan Wang, Dietrich Baade, Ferdinando Patat. 2006-11-29. Spectropolarimetric diagnostics of thermonuclear supernova explosions. https://doi.org/10.1126/science.1121656

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