Year: 1990
Type: article
Abstract: 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.
Source: Progress of Theoretical Physics
DOI: 10.1143/ptp/84.3.436
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funder: High Energy Physics
OpenAlex ID: W2124307143