Extraction of black hole coalescence waveforms from noisy data

被引：12

作者：

Green, Martin A. ^{[1
]}

Moffat, J. W. ^{[1
,2
]}

机构：

[1] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada

[2] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada

来源：

PHYSICS LETTERS B | 2018年 / 784卷

基金：

美国国家科学基金会;

关键词：

Gravitational waves; Black hole coalescence; Signal extraction;

D O I：

10.1016/j.physletb.2018.08.009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe an independent analysis of LIGO data for black hole coalescence events. Gravitational wave strain waveforms are extracted directly from the data using a filtering method that exploits the observed or expected time-dependent frequency content. Statistical analysis of residual noise, after filtering out spectral peaks (and considering finite bandwidth), shows no evidence of non-Gaussian behaviour. There is also no evidence of anomalous causal correlation between noise signals at the Hanford and Livingston sites. The extracted waveforms are consistent with black hole coalescence template waveforms provided by LIGO. Simulated events, with known signals injected into real noise, are used to determine uncertainties due to residual noise and demonstrate that our results are unbiased. Conceptual and numerical differences between our RMS signal-to-noise ratios (SNRs) and the published matched-filter detection SNRs are discussed. (C) 2018 The Authors. Published by Elsevier B.V.

引用

页码：312 / 323

页数：12

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