Spectropolarimetry is one of the most powerful methods to study the multi-dimensional geometry of supernovae (SNe). We present a brief summary of the spectropolarimetric observations of strippedenvelope core-collapse SNe. Observations indicate that stripped-envelope SNe generally have a nonaxisymmetric ion distribution in the ejecta. Three-dimensional clumpy geometry nicely explains the observed properties. A typical size of the clumps deduced from observations is relatively large: ⊙25% of the photosphere. Such a large-scale clumpy structure is similar to that observed in Cassiopeia A, and suggests that large-scale convection or standing accretion shock instability takes place at the onset of the explosion.
|ジャーナル||Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences|
|出版ステータス||Published - 2017 10 28|
ASJC Scopus subject areas
- 数学 (全般)