论文标题
测试黑洞的Blandford-Znajek机制，用于长期伽马射线爆发
Testing Blandford-Znajek mechanism in black hole hyperaccretion flows for long-duration gamma-ray bursts
论文作者
论文摘要
长持续的伽马射线爆发（GRB）通常与巨大恒星的核心爆发有关。在Collapsar的情况下，被HyperCretion磁盘包围的旋转恒星质量黑洞（BH）被认为是GRB中央发动机的合理候选者之一。在本文中，我们处理一个样本，其中包括146个长GRB，在多频段余气中具有显着的喷射断裂特征。然后可以通过喷射休息时间获得喷气开口角。通过出现由BH HyperCretion系统中Blandford-Znajek（BZ）机制提供支持的GRB喷气机，我们分析了样品中长GRB亮度和持续时间的分布，并限制了不同BH旋转的增生率。作为结果，我们发现BZ机制是如此强大，使得可以在合理积聚率中解释长GRB提示排放。
Long-duration gamma-ray bursts (GRBs) are generally related to the core-collapse of massive stars. In the collapsar scenario, a rotating stellar-mass black hole (BH) surrounded by a hyperaccretion disk has been considered as one of the plausible candidates of GRB central engines. In this paper, we work on a sample including 146 long GRBs with significant jet break features in the multi-band afterglows. The jet opening angles can be then obtained by the jet break time. By asumming GRB jets powered by Blandford-Znajek (BZ) mechanism in the BH hyperaccretion system, we analyze the distributions of the long GRB luminosities and durations in the samples, and constrain the accretion rates for the different BH spins. As the results, we find that the BZ mechanism is so powerful making it possible to interpret the long GRB prompt emissions within the reasonably accretion rates.
