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arXiv 0705.1240astro-ph
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双星内部夸克新星爆炸:对伽马射线暴的应用

Quark-nova explosion inside a collapsar: application to Gamma Ray Bursts

Rachid Ouyed, Denis Leahy, Jan Staff, Brian Niebergal

摘要:

如果一个夸克新星发生在一个超新星内部,夸克新星喷出物(相对论性的富铁块)和超新星包层之间的相互作用会导致伽马射线暴中观察到的特征。夸克新星喷出物与恒星的包层碰撞,在极漏斗上方形成一个向外移动的帽(Gamma~1 - 10)。在相对论喷流(在吸积到夸克星上之后)的内部冲击波中,当帽盖变得光学薄之后,可以看到瞬发的伽马射线暴发射。模型特征包括:(i)前体活性(光学、X射线、伽马射线),(ii)瞬发伽马射线发射,和(iii)余辉发射。我们讨论了SN-少的长持续时间的伽玛暴,短硬伽玛暴(包括协会和非协会与恒星形成区),暗伽玛暴,高能X射线耀斑中检测到的雨燕伽玛暴,并在我们的模型的上下文中观察到的近同时的光学和伽玛射线的即时发射。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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