Instability and clumping in SN 1987A

Details Instability and clumping in SN 1987A Instability and clumping in SN 1987A

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...251..505m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 251, no. 2, Nov. 1991, p. 505-514.

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Hydrodynamic Equations, Supernova Remnants, Supernova 1987A, Taylor Instability, Computational Astrophysics, Computerized Simulation, Radial Distribution, Radial Velocity, Two Dimensional Models

Scientific paper

Two-dimensional hydrodynamic calculations of Rayleigh-Taylor instabilities in the ejecta of SN 1987A are described. These calculations covering the first few hours of the evolution were performed on a grid of 1000 x 1000, which provides significantly better resolution than obtained in previous calculations (Fryxell et al., 1991). As a result of the improved resolution, two new regions of instability were discovered. In addition, the structure of the Rayleigh-Taylor fingers became much more complex. The numerical experiment was found to be consistent with a linear stability analysis. In addition, the two-dimensional results are compared with the results of a one-dimensional calculation to show the effects of the nonspherical motion on the structure and composition distribution of the ejecta.

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