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arXiv 1807.07660gr-qcastro-ph.IM
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用互相关法在先进的LIGO的第一次观测运行中对引力波的独立搜索

An independent search of gravitational waves in the first observation run of advanced LIGO using cross-correlation

Javier M. Antelis, Claudia Moreno

摘要:

本文介绍了一种利用LIGO观测站的数据同时搜索引力波的无模板方法。该方法的基本思想是,如果应变信号之间的最大相关系数大于一个显著阈值,且其时间差小于观测站间光传播时间的10 ms,则在短时间数据段中存在GW信号。因此,该方法可以用于执行任何类型GW的盲搜索,而不管波形和源类型以及天空位置。一个独立的搜索注入和真正的GW信号从紧凑的二元聚结(CBC)包含在先进的LIGO的第一次观测运行(O1)进行评估其性能。在此基础上,提出的方法能够检测到GW产生的二元系统,而不做任何假设。

英文摘要:

This work describes a template-free method to search gravitational waves (GW) using data from the LIGO observatories simultaneously. The basic idea of this method is that a GW signal is present in a short-duration data segment if the maximum correlation-coefficient between the strain signals is higher than a significant threshold and its time difference is lower than the 10 ms of inter-observatory light propagation time. Hence, this method can be used to carry out blind searches of any types of GW irrespective of the waveform and of the source type and sky location. An independent search of injected and real GW signals from compact binary coalescences (CBC) contained in the first observation run (O1) of advanced LIGO was carried out to asses its performance. On the basis of the results, the proposed method was able to detect GW produced by binary systems without making any assumption about them.

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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