Instrumental vetoes for transient gravitational-wave triggers using noise-coupling models: The bilinear-coupling veto
Instrumental vetoes for transient gravitational-wave triggers using noise-coupling models: The bilinear-coupling veto
复制标题
使用噪声耦合模型对瞬态引力波触发进行仪器否决：双线性耦合否决
DOI：
10.1103/physrevd.89.122001
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发表时间：
2014
影响因子：
5
通讯作者：
B. Yuan
中科院分区：
文献类型：
--
作者：
P. Ajith;T. Isogai;N. Christensen;R. Adhikari;A. Pearlman;A. Wein;A. Weinstein;B. Yuan
激光干涉引力波天文台（LIGO）和Virgo最近完成了对引力波的初始目标灵敏度的搜索，很快高级LIGO和高级Virgo将开始更好的观测能力。在搜索短持续时间信号时，例如合并紧凑型二元吸气或“突发”事件，噪声瞬变可能是问题。干涉引力波探测器是非常复杂的仪器，根据过去的经验，数据往往包含大量的噪声瞬变，这些噪声瞬变不容易与可能的引力波信号区分开来。为了对短持续时间的引力波信号进行灵敏的搜索，重要的是识别这些噪声伪影，并“否决”它们。在这里，我们描述了这样一个否决权，双线性耦合否决权，利用仪器噪声的干涉引力波探测器的输出应变通道的耦合的经验模型。在该方法中，我们检查在表观信号时来自输出应变通道的数据是否与来自辅助通道的双线性组合的数据一致。我们讨论了最近的LIGO数据的否决权的应用程序的结果，其可能的效用时，使用先进的LIGO和先进的处女座的数据。
The Laser Interferometer Gravitational-wave Observatory (LIGO) and Virgo recently completed searches for gravitational waves at their initial target sensitivities, and soon Advanced LIGO and Advanced Virgo will commence observations with even better capabilities. In the search for short-duration signals, such as coalescing compact binary inspirals or “burst” events, noise transients can be problematic. Interferometric gravitational-wave detectors are highly complex instruments, and, based on the experience from the past, the data often contain a large number of noise transients that are not easily distinguishable from possible gravitational-wave signals. In order to perform a sensitive search for short-duration gravitational-wave signals it is important to identify these noise artifacts, and to “veto” them. Here we describe such a veto, the bilinear-coupling veto, that makes use of an empirical model of the coupling of instrumental noise to the output strain channel of the interferometric gravitational-wave detector. In this method, we check whether the data from the output strain channel at the time of an apparent signal is consistent with the data from a bilinear combination of auxiliary channels. We discuss the results of the application of this veto to recent LIGO data, and its possible utility when used with data from Advanced LIGO and Advanced Virgo.