Neutrino-Driven Supernovae: an Accretion Instability in a Nuclear Physics Controlled Environment
Astrophysics
2009-11-10 v1
Abstract
New simulations demonstrate that low-mode, nonradial hydrodynamic instabilities of the accretion shock help starting hot-bubble convection in supernovae and thus support explosions by the neutrino-heating mechanism. The prevailing conditions depend on the high-density equation of state which governs stellar core collapse, core bounce, and neutron star formation. Tests of this sensitivity to nuclear physics variations are shown for spherically symmetric models. Implications of current explosion models for r-process nucleosynthesis are addressed.
Cite
@article{arxiv.astro-ph/0411347,
title = {Neutrino-Driven Supernovae: an Accretion Instability in a Nuclear Physics Controlled Environment},
author = {H. -T. Janka and R. Buras and F. S. Kitaura Joyanes and A. Marek and M. Rampp and L. Scheck},
journal= {arXiv preprint arXiv:astro-ph/0411347},
year = {2009}
}
Comments
9 pages, 4 figures, contribution to Nuclei in the Cosmos 8, to appear in Nucl. Phys. A