论文标题
泊松分布事件的巧合无效测试
A Coincidence Null Test for Poisson-Distributed Events
论文作者
论文摘要
当使用多个传感器观察到瞬态事件时，通常有必要确定一致事件的重要性。我们得出了一个通用的无效测试，该测试是针对由原型检测问题进行的任意数量的传感器，用于引力波检测器中的独立泊松分布事件，例如Ligo和Pirgo。在这些探测器中，可以通过记录干涉信号和周围物理环境的无数渠道来见证瞬态事件。我们将无效测试应用于一组广泛的模拟重力波事件，以及对真实的重力波检测，以确定哪些辅助通道所做的，并且不会见证真正的引力波，因此在构造否决时使用了哪些辅助通道。我们还描述了如何使用我们的方法来研究检测器伪影及其起源，并量化了候选GW信号从辅助通道中观察到的噪声伪影的统计独立性。
When transient events are observed with multiple sensors, it is often necessary to establish the significance of coincident events. We derive a universal null test for an arbitrary number of sensors motivated by the archetypal detection problem for independent Poisson-distributed events in gravitational-wave detectors such as LIGO and Virgo. In these detectors, transient events may be witnessed by myriad channels that record interferometric signals and the surrounding physical environment. We apply our null test to a broad set of simulated gravitational-wave events as well as to a real gravitational-wave detection to determine which auxiliary channels do and do not witness real gravitational waves, and therefore which are safe to use when constructing vetoes. We also describe how our approach can be used to study detector artifacts and their origin, as well as to quantify the statistical independence of candidate GW signals from noise artifacts observed in auxiliary channels.
