Ouyed 2007 夸克新星作为伽玛暴的中心引擎

主要内容:
考虑坍缩星在夸克相变时产生的外流作为伽玛暴的来源。

精彩摘抄:


文章信息:
arXiv:0705.1240 [ps, pdf, other] : Title: Gamma Ray Bursts within the Quark-Nova scenario: Precursor, prompt and afterglow phases
Authors: Rachid Ouyed, Denis Leahy, Jan Staff, Brian Niebergal (University of Calgary, Alberta, Canada)
Comments: 11 journal pages and 5 figures

By exploring the dynamical and thermal evolution of the iron-rich ejecta in a Quark-Nova explosion we find that the ejecta breaks up into multiple subjets. If the quark-nova occurs inside a collapsar, the interaction between these subjets and collapsar envelope, in the case of a failed and successful supernova, leads to features indicative of those observed in Gamma Ray Bursts. These 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, as well as the energetic X-ray flares detected in Swift GRBs in our model.