Quark-nova explosion inside a collapsar: application to Gamma Ray Bursts
Abstract
If a quark-nova occurs inside a collapsar, the interaction between the quark-nova ejecta (relativistic iron-rich chunks) and the collapsar envelope, leads to features indicative of those observed in Gamma Ray Bursts. The quark-nova ejecta collides with the stellar envelope creating an outward moving cap (Gamma ~ 1-10) above the polar funnel. Prompt gamma-ray burst emission from internal shocks in relativistic jets (following accretion onto the quark star) become visible after the cap becomes optically thin. Model features include: (i) precursor activity (optical, X-ray, gamma-ray), (ii) prompt gamma-ray emission, and (iii) afterglow emission. We discuss SN-less long duration GRBs, short hard GRBs (including association and non-association with star forming regions), dark GRBs, the energetic X-ray flares detected in Swift GRBs, and the near-simultaneous optical and gamma-ray prompt emission observed in GRBs in the context of our model.
Keywords
Cite
@article{arxiv.0705.1240,
title = {Quark-nova explosion inside a collapsar: application to Gamma Ray Bursts},
author = {Rachid Ouyed and Denis Leahy and Jan Staff and Brian Niebergal},
journal= {arXiv preprint arXiv:0705.1240},
year = {2017}
}