Constraining unmodeled physics with compact binary mergers from GWTC-1
Constraining unmodeled physics with compact binary mergers from GWTC-1
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DOI：
10.1103/physrevd.103.042004
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发表时间：
2020-08
影响因子：
5
通讯作者：
B. Edelman;F. J. Rivera-Paleo;J. D. Merritt;B. Farr;Zoheyr Doctor;Jeandrew Brink;W. Farr;J. Gair;J. Key;J. McIver;A. Nielsen
中科院分区：
文献类型：
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作者：
B. Edelman;F. J. Rivera-Paleo;J. D. Merritt;B. Farr;Zoheyr Doctor;Jeandrew Brink;W. Farr;J. Gair;J. Key;J. McIver;A. Nielsen
我们提出了一个灵活的模型来描述LIGO和Virgo引力波探测器中观测到的引力波信号与模拟波形的一般偏差的影响。通过从GWTC-1星表探测到11个引力波事件，我们能够限制可能与我们的模拟波形的偏差。在这篇文章中，我们提出了描述偏差的相干样条模型，然后选择在一个基于极端自发标量化的唯象和天体物理激励的波形偏离的例子上验证我们的模型。我们发现，该模型能够恢复模拟的偏差。通过模型比较，我们观察到，与通常的紧凑双星合并(CBC)模型相比，样条法模型能更好地描述模拟的偏离。我们用我们的模型分析了整个GWTC-1事件目录，并将其与正常的CBC模型进行了比较，发现它与所使用的建模模板引力波形没有显著偏离。
We present a flexible model to describe the effects of generic deviations of observed gravitational wave signals from modeled waveforms in the LIGO and Virgo gravitational wave detectors. With the detection of 11 gravitational wave events from the GWTC-1 catalog, we are able to constrain possible deviations from our modeled waveforms. In this paper we present our coherent spline model that describes the deviations, then choose to validate our model on an example phenomenological and astrophysically motivated departure in waveforms based on extreme spontaneous scalarization. We find that the model is capable of recovering the simulated deviations. By performing model comparisons we observe that the spline model effectively describes the simulated departures better than a normal compact binary coalescence (CBC) model. We analyze the entire GWTC-1 catalog of events with our model and compare it to a normal CBC model, finding that there are no significant departures from the modeled template gravitational waveforms used.