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Proposing Institution

Max Planck Institute for Astrophysics
Project Manager

Apl. Prof. Dr. rer. nat. Hans-Thomas Janka
Karl-Schwarzschild-Str. 1
85748 Garching
The explosion energies of core-collapse supernovae are a key indicator of the viability of the neutrino-driven mechanism that is found to initiate explosions in most recent three-dimensional (3D) simulations. However, none of these self-consistent simulations were performed beyond the moment when the supernova shock front starts its accelerated expansion sufficiently long to determine the saturated value of the supernova energy. Only such observational quantities of the explosion and of the compact and gaseous remnants will allow us to draw conclusions about our theoretical understanding of the supernova mechanism. In this project, we plan to determine the supernova and neutron-star properties for an existing suite of successfully exploding 3D models of 9.0, 9.6, 15, and 20 solar-mass stars, which were evolved to the onset of shock runaway with the VERTEX-PROMETHEUS code by the Garching group over the past three years. For this purpose we have developed a new scheme for a computationally efficient, approximative description of the neutrino effects (heating and cooling) that allows us to continue the 3D simulations for time scales of several seconds without the excessive computing resources demanded by the elaborate neutrino transport treatment of the VERTEX module. The results of this project serve for direct comparison with observed supernovae and neutron stars and will be used as input to very long-time simulations for computing supernova nucleosynthesis, light curves, and spectra.

Impressum, Conny Wendler