Frankfurt 2014 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 62: Nukleare Astrophysik
HK 62.6: Vortrag
Freitag, 21. März 2014, 15:30–15:45, HZ 5
Simulations of Electron Capture Supernovae with Approximate Neutrino Transport — •Heiko Möller1, Tobias Fischer2, Sam Jones3, and Gabriel Martínez-Pinedo1,4 — 1TU Darmstadt — 2University of Wrocław — 3Keele University — 4GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt
We have performed simulations of electron capture supernovae in a spherically symmetric general relativistic radiation hydrodynamics model with approximate neutrino treatment. We base our study on an 8.8 M⊙ O-Ne-Mg core progenitor (Nomoto, 1984, 1987). We successfully obtain an explosion and compare our results with a reference run performed with an state-of-the-art three-flavor Boltzmann neutrino transport scheme implemented into the same hydrodynamic code. In general, we find good agreement in the the electron-flavor neutrino spectra. However, we find shorter explosion timescales and also significantly lower explosion energies of only 1.4 · 1048 erg. This result is in agreement with the explosion energy of SN 2008S as derived by Tominaga et al. (2013) based on light curve studies.
Currently we are extending our simulations to the recently published super-AGB star progenitor models by Jones et al. (2013) with regard to their evolution towards an electron capture supernova.
Our study also explores the role of weak interaction rates in determining the evolution and shaping the spectra of the emitted neutrinos.
Heiko Möller is member of the HGS-HIRe Graduate School. This work is supported by the Deutsche Forschungsgemeinschaft through contract SFB 634.