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arXiv 1405.7201gr-qcastro-ph.HEastro-ph.SR
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引力波和短伽马射线暴的符合搜索

Coincidence searches of gravitational waves and short gamma-ray bursts

Andrea Maselli, Valeria Ferrari

摘要:

黑洞中子星合并双星被认为是解释短伽马射线暴的最佳方案之一。事实上,如果合并后形成的黑洞被一个大质量的圆盘所包围,中微子湮灭过程可能会产生高能量和准直的电磁辐射。在本文中,我们设计了一个新的程序,用于从黑洞中子星双星的引力波的搜索,分配的概率,检测到的引力信号与吸积盘的形成,质量足以功率伽马射线暴。这种方法是基于最近提出的两个半解析拟合,一个再现周围的黑洞作为一些二元参数的函数,第二个有关的中子星的紧凑性,其潮汐变形的残余磁盘的质量。我们的方法可用于低延迟数据分析,以限制与短伽马射线暴相关的引力信号的参数空间搜索,并获得关于聚结系统的动力学和中子星状态方程的信息。

英文摘要:

Black-hole neutron-star coalescing binaries have been invoked as one of the most suitable scenario to explain the emission of short gamma-ray bursts. Indeed, if the black-hole which forms after the merger, is surrounded by a massive disk, neutrino annihilation processes may produce high-energy and collimated electromagnetic radiation. In this paper, we devise a new procedure, to be used in the search for gravitational waves from black-hole-neutron-star binaries, to assign a probability that a detected gravitational signal is associated to the formation of an accreting disk, massive enough to power gamma-ray bursts. This method is based on two recently proposed semi-analytic fits, one reproducing the mass of the remnant disk surrounding the black hole as a function of some binary parameters, the second relating the neutron star compactness, with its tidal deformability. Our approach can be used in low-latency data analysis to restrict the parameter space searching for gravitational signals associated with short gamma-ray bursts, and to gain information on the dynamics of the coalescing system and on the neutron star equation of state.

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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