Global mixing in SN 1987A by the asymmetric shock wave

Details Global mixing in SN 1987A by the asymmetric shock wave Global mixing in SN 1987A by the asymmetric shock wave

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...358l...9y&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 358, July 20, 1990, p. L9-L12.

Astronomy and Astrophysics

Astrophysics

12

Magnetohydrodynamic Waves, Shock Waves, Stellar Rotation, Supernova 1987A, Stellar Cores, Stellar Envelopes, Stellar Models, X Ray Spectra

Scientific paper

The possibility of global mixing of matter by the nonspherical shock wave in the SN explosion was investigated by the two-dimensional axial symmetric hydrodynamical simulation. It is found that (1) the asymmetric shock wave is generated by passing through the flattened core induced by stellar rotation, and (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. 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).

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