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arXiv 2109.07642gr-qcastro-ph.IM
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广义相对论参数化引力波试验中非高斯噪声瞬态效应及其抑制的研究

Investigation of the effects of non-Gaussian noise transients and their mitigation in parameterized gravitational-wave tests of general relativity

Jack Y. L. Kwok, Rico K. L. Lo, Alan J. Weinstein, Tjonnie G. F. Li

摘要:

Advanced LIGO和Advanced Virgo对致密双星合并产生的引力波的探测为研究强场、高度相对论性的引力机制提供了机会。广义相对论(GR)的引力波测试通常假设高斯和稳态探测器噪声,因此,不考虑非高斯的瞬态噪声特征(毛刺)。我们提出的结果进行参数化的引力波测试的模拟信号从双黑洞合并重叠三类频繁发生的仪器故障具有明显不同的形态。然后,我们审查和应用三个毛刺缓解方法,并评估其效果,减少错误的偏差GR。通过考虑9种情况下的毛刺与模拟信号重叠,我们表明,考虑中的短持续时间,宽带光点和tomte毛刺引入错误的GR违规,并使用修复滤波器和毛刺模型减法可以一贯消除这种错误的违规行为,而不引入额外的影响。

英文摘要:

The detection of gravitational waves from compact binary coalescence by Advanced LIGO and Advanced Virgo provides an opportunity to study the strong-field, highly relativistic regime of gravity. Gravitational-wave tests of general relativity (GR) typically assume Gaussian and stationary detector noise and, thus, do not account for non-Gaussian, transient noise features (glitches). We present the results obtained by performing parametrized gravitational-wave tests on simulated signals from binary-black-hole coalescence overlapped with three classes of frequently occurring instrumental glitches with distinctly different morphologies. We then review and apply three glitch mitigation methods and evaluate their effects on reducing false deviations from GR. By considering nine cases of glitches overlapping with simulated signals, we show that the short-duration, broadband blip and tomte glitches under consideration introduce false violations of GR, and using an inpainting filter and glitch model subtraction can consistently eliminate such false violations without introducing additional effects.

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