arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0807.0747astro-ph
收藏

伽马射线暴中央引擎

Gamma Ray Burst Central Engines

Todd A. Thompson

摘要:

我回顾了长持续时间伽马射线暴(GRB)中心引擎理论的各个方面。我关注的是任何模型的要求;这些包括祖先的角动量,功率,洛伦兹因子,不对称性,流动的持续时间,以及与明亮超新星的关联和非关联。根据这些要求,我比较和对比了磁星和毫秒原磁星模型。后一种模型能够产生洛伦兹因子约为100的流动,同时在约10-100 s的时间尺度内保持约10^50尔格/s的动力学光度。

英文摘要:

I review aspects of the theory of long-duration gamma-ray burst (GRB) central engines. I focus on the requirements of any model; these include the angular momentum of the progenitor, the power, Lorentz factor, asymmetry, and duration of the flow, and both the association and the non-association with bright supernovae. I compare and contrast the collapsar and millisecond proto-magnetar models in light of these requirements. The ability of the latter model to produce a flow with Lorentz factor ~100 while simultaneously maintaining a kinetic luminosity of ~10^50 ergs/s for a timescale of ~10-100 s is emphasized.

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。

↑