Global mixing in SN 1987A by the asymmetric shock wave

Shoichi Yamada, Katsuhiko Sato

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Abstract

The possibility of global mixing of matter by the nonspherical shock wave in the supernova explosion was investigated by the two-dimensional axial symmetric hydrodynamical simulation. We found that (1) the asymmetric shock wave is generated by passing through the flattened core induced by stellar rotation, (2) inner matter tends to move toward the symmetric axis, and global matter mixing is possible if the degree of the deformation of the core is large, since this asymmetry of shock is not dumped even if the outer envelope is almost spherically symmetric. We also found that if the initial shock is jetlike, this tendency is strengthened more. This asymmetric shock wave also may explain the nonspherically expanding envelope in SN 1987A suggested by the speckle and polarization observations.

Original languageEnglish
JournalAstrophysical Journal
Volume358
Issue number1 PART 2
Publication statusPublished - 1990 Jul 20
Externally publishedYes

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Keywords

  • Hydrodynamics
  • Shock waves
  • Stars: rotation
  • Stars: supernovae

ASJC Scopus subject areas

  • Space and Planetary Science

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