Conferències al DAA. Xarrada a càrrec de l'investigador Bernhard Müller, de la Queen's University, Belfas (Regne Unit). Lloc: Seminari del Departament d'Astronomia i Astrofísica, 4a planta de l'Edifici d'Investigació, a Burjassot. Dia: dimarts 12 de gener de 2016. Hora: 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.
Llista d'enllaços:
Imatges:
