史瓦西黑洞外中微子主导吸积盘的质量

Mass of the Neutrino-Dominated Accretion Disks outside the Schwarzschild Black Holes

选取2005年1月—2016年12月期间具有X射线余辉观测的16个γ射线暴的短暴数据样本,估算史瓦西黑洞外中微子主导吸积盘的质量,发现大部分盘的质量远大于模拟的最大值。这个结果表明,短暴要求更大质量的吸积盘,即史瓦西黑洞的吸积不足以提供多数短暴能量,短暴爆发所需要的能量可能需要黑洞的自旋或其他的电磁动力学过程来提供。

We observed 16 short GRBs with X ray afterglow from January 2005 to December 2006 to estimate the mass of the neutrino-dominated accretion disks outside the Schwarzsehild black holes and found that the mass of most disks far exceeding the limit in simulations. The results show that most of the short GRBs require massive disks, which means that the accretion of the Schwarzschild black hole is not sufficient to power most short GRBs. The energy to power short GRBs may be provided by the spin of a black hole or other magnetohydrodynamic processes.