Are Neutron-Rich Elements Produced in the Collapse of Strange Dwarfs ?
Astrophysics
2009-11-13 v1
Abstract
The structure of strange dwarfs and that of hybrid stars with same baryonic number is compared. There is a critical mass (M~0.24M_sun) in the strange dwarf branch, below which configurations with the same baryonic number in the hybrid star branch are more stable. If a transition occurs between both branches, the collapse releases an energy of about of 3x10^{50} erg, mostly under the form of neutrinos resulting from the conversion of hadronic matter onto strange quark matter. Only a fraction (~4%) is required to expel the outer neutron-rich layers. These events may contribute significantly to the chemical yield of nuclides with A>80 in the Galaxy, if their frequency is of about one per 1500 years.
Cite
@article{arxiv.astro-ph/0510860,
title = {Are Neutron-Rich Elements Produced in the Collapse of Strange Dwarfs ?},
author = {G. F. Marranghello and J. A. de Freitas Pacheco},
journal= {arXiv preprint arXiv:astro-ph/0510860},
year = {2009}
}
Comments
Accepted for publication in IJMPD