S E M I N A R I

Departament d'Astronomia i Astrofísica
Universitat de València

    3D Supernova Simulations with CoCoNuT - Beyond the First Second

Bernhard Müller

Queen's University of Belfast


Seminari del departament d'Astronomia i Astrofísica

Dimarts 12 gener 2016

12:00


Resum

The most popular scenario for core-collapse supernova explosions relies on the joint action of neutrino heating from the young neutron star and hydrodynamic instabilities like convection in the post-shock convection. We now see the advent of the first successful 3D simulations of these explosions using multi-group neutrino transport as required to accurately model neutrino heating and cooling. While it turned out harder to trigger shock revival in 3D than in axisymmetric 2D models, successful explosion models suggest that 3D effects can be helpful after shock revival for brining the simulations more in line with observed supernova explosion energies as I shall argue in this talk. Large-scale seed asymmetries from shell burning may help to raise explosion energies further by triggering shock revival earlier. I shall also outline feature of the parallel version of CoCoNuT employed for some of these simulations and discuss its performance on large HPC machines in Australia and Europe.