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arXiv 1012.1853astro-ph.HEastro-ph.SRgr-qc
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崩塌体形成的动力学和引力波特征

Dynamics and Gravitational Wave Signature of Collapsar Formation

C. D. Ott, C. Reisswig, E. Schnetter, E. O'Connor, U. Sperhake, F. Loeffler, P. Diener, E. Abdikamalov, I. Hawke, A. Burrows

摘要:

我们在长伽马射线暴的Eksar模型的背景下进行了旋转核坍缩的3+1广义相对论模拟。我们采用了一个现实的祖先,旋转的基础上的恒星演化计算的结果,和一个简化的状态方程。我们的模拟跟踪自洽崩溃,反弹,反弹后阶段,黑洞的形成,以及随后的早期超吸积阶段。我们从时空曲率中提取了引力波,并确定了一个独特的引力波签名与早期阶段的恒星形成。

英文摘要:

We perform 3+1 general relativistic simulations of rotating core collapse in the context of the collapsar model for long gamma-ray bursts. We employ a realistic progenitor, rotation based on results of stellar evolution calculations, and a simplified equation of state. Our simulations track self-consistently collapse, bounce, the postbounce phase, black hole formation, and the subsequent early hyperaccretion phase. We extract gravitational waves from the spacetime curvature and identify a unique gravitational wave signature associated with the early phase of collapsar formation.

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