Three Dimensional Simulations of Supernova Explosion. I

Details Three Dimensional Simulations of Supernova Explosion. I Three Dimensional Simulations of Supernova Explosion. I

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pthph..84..436y&link_type=abstract

Progress of Theoretical Physics, Vol. 84, No. 3, pp. 436-443

Physics

13

Scientific paper

We have performed three dimensional numerical simulations of supernova explosions using (200)(3) rectangular grids. As initial density distribution, we consider N=3 polytrope and the realistic presupernova star model (M11) computed by Nomoto. For each calculation we put small random perturbations in pressure and velocity. In the case N=3 polytropic star, although the fluctuation grows once, it stops growing. As a result no significant growth of fluctuations occurs except for extremely large initial perturbations. This is completely different from the preliminary simulations by Nagasawa et al. using a smoothed particle method with a small number of particles. In realistic star cases, perturbations put at the density gap corresponding to the hydrogen burning shell grow very large, which is consistent with linear analysis.

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