Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-09-24
PoSNIC-IX:132,2006
Astronomy and Astrophysics
Astrophysics
5 pages, 4 figures, in Proceedings of "Nuclei in the Cosmos IX, Geneva, Jun 25-30", associated movies are displayed at http:
Scientific paper
Neutrino transport in spherically symmetric models of stellar core collapse and bounce has achieved a technically complete level, rewarded by the agreement among independent groups that a multi-dimensional treatment of the fluid-instabilities in the post-bounce phase is indispensable to model supernova explosions. While much effort is required to develop a reliable neutrino transport technique in axisymmetry, we explore neutrino physics approximations and parameterizations for an efficient three-dimensional simulation of the fluid-instabilities in the shock-heated matter that accumulates between the accretion shock and the protoneutron star. We demonstrate the reliability of a simple parameterization scheme in the collapse phase and extend our 3D magneto-hydrodynamical collapse simulations to a preliminary postbounce evolution. The growth of magnetic fields is investigated.
Liebendoerfer Matthias
Pen U.-L.
Thompson Christopher
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