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arXiv 1202.4031gr-qcastro-ph.CO
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用先进探测器对致密双星聚结的引力波信号进行早期定位的前景

Prospects for early localization of gravitational-wave signals from compact binary coalescences with advanced detectors

Alessandro Manzotti, Alexander Dietz

摘要:

可探测到的引力波的一个主要候选来源是成对的恒星质量致密天体的螺旋和合并。先进的LIGO和先进的Virgo探测器将使科学家能够比第一代探测器更早地探测到来自更大质量系统的螺旋信号。来自两颗中子星合并的信号预计将在先进探测器的敏感波段停留数分钟,从而允许在系统最终合并之前进行探测。在这项工作中,在合并之前检测inspiral信号的前景,以及获得合适的源位置的天空区域的可能性进行了研究。由于信号的大部分是在聚结之前的最后10秒内累积的,因此带宽和定时精度在聚结之前的最后时刻大量累积。我们使用蒙特卡罗技术来估计天空定位的准确性,通过网络的地基干涉仪,如aLIGO和aVirgo。通过添加日本KAGRA探测器,表明聚并前的探测和三角测量是可行的。

英文摘要:

A leading candidate source of detectable gravitational waves is the inspiral and merger of pairs of stellar-mass compact objects. The advanced LIGO and advanced Virgo detectors will allow scientists to detect inspiral signals from more massive systems and at earlier times in the detector band, than with first generation detectors. The signal from a coalescence of two neutron stars is expected to stay in the sensitive band of advanced detectors for several minutes, thus allowing detection before the final coalescence of the system. In this work, the prospects of detecting inspiral signals prior to coalescence, and the possibility to derive a suitable sky area for source locations are investigated. As a large fraction of the signal is accumulated in the last ~10 seconds prior to coalescence, bandwidth and timing accuracy are largely accrued in the very last moments prior to coalescence. We use Monte Carlo techniques to estimate the accuracy of sky localization through networks of ground-based interferometers such as aLIGO and aVirgo. With the addition of the Japanese KAGRA detector, it is shown that the detection and triangulation before coalescence may be feasible.

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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