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arXiv 1009.4334astro-ph.HEastro-ph.SR
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双星中Kerr黑洞的GRB/HN

GRB/HN from Kerr Black Holes in Binaries

Enrique Moreno Mendez

摘要:

在坍缩星模型中,一颗大质量恒星(大于20个太阳质量)不能产生SN而形成BH,这为理解长伽马射线暴(GRB)和伴随的超新星(HN)提供了主要框架。然而,单颗双星模型解释了双星的数量,预测核心旋转太慢,无法产生GRB/HNe。我们提出了一个二元演化模型,允许形成克尔黑洞(BH)的BH的自旋可以估计从崩溃前的轨道,并使用Blandford-Znajek(BZ)机制来估计GRB/HN的可用能量。粒子数合成研究表明,该模型可以解释长伽玛暴和亚亮伽玛暴粒子数。

英文摘要:

The Collapsar model, in which a massive star (greater than 20 solar masses) fails to produce a SN and forms a BH, provides the main framework for understanding long Gamma-Ray Bursts (GRB) and the accompanying hypernovae (HN). However, single massive-star models that explain the population of pulsars, predict cores that rotate too slowly to produce GRBs/HNe. We present a model of binary evolution that allows the formation of Kerr black holes (BH) where the spin of the BH can be estimated from the pre-collapse orbit, and use the Blandford-Znajek (BZ) mechanism to estimate the available energy for a GRB/HN. A population synthesis study shows that this model can account for both, the long GRB and the subluminous GRB populations.

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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