Nucleosynthesis in core-collapse supernova explosions triggered by a quark-hadron phase transition
Abstract
We explore heavy element nucleosynthesis in the explosion of massive stars which are triggered by a quark-hadron phase transition during the early post bounce phase of core-collapse supernovae. The present study is based on general relativistic radiation hydrodynamics simulations with three-flavor Boltzmann neutrino transport in spherical symmetry, which utilize a quark-hadron hybrid equation of state based on the MIT bag model for strange quark matter. The quark-hadron phase transition inside the stellar core forms a shock wave propagating towards the surface of the proto-neutron star. The shock wave results in an explosion and ejects neutron-rich matter which is piled up or accreting on the proto-neutron star. Later, during the cooling phase, the proto-neutron star develops a proton-rich neutrino-driven wind. We present a detailed analysis of the nucleosynthesis outcome in both neutron-rich and proton-rich ejecta and compare our integrated nucleosynthesis with observations of metal poor stars.
Cite
@article{arxiv.1112.5684,
title = {Nucleosynthesis in core-collapse supernova explosions triggered by a quark-hadron phase transition},
author = {Nobuya Nishimura and Tobias Fischer and Friedrich-Karl Thielemann and Carla Fröhlich and Matthias Hempel and Roger Käppeli and Gabriel Martínez-Pinedo and Thomas Rauscher and Irina Sagert and Christian Winteler},
journal= {arXiv preprint arXiv:1112.5684},
year = {2015}
}
Comments
14 pages, 15 figures and 1 table, accepted for publication in ApJ (Issue 757, Oct. 2012)