Optimizing vetoes for gravitational-wave transient searches
Optimizing vetoes for gravitational-wave transient searches
复制标题
优化引力波瞬态搜索的否决权
DOI：
10.1088/0264-9381/30/15/155010
复制
发表时间：
2013
影响因子：
3.5
通讯作者：
E. Katsavounidis
中科院分区：
文献类型：
--
作者：
R. Essick;L. Blackburn;E. Katsavounidis
像LIGO、GEO 600和Virgo这样的干涉引力波探测器记录的信息超过了可能的引力波事件。这些辅助通道捕获关于探测器及其周围环境的状态的信息，这些信息可用于推断某些类引力波事件的潜在陆地噪声源。我们提出了一种算法，解决了排序（或等效优化）的辅助系统在引力波探测器，以建立否决条件，在搜索引力波瞬变的信息。该程序被用来确定否决搜索未建模的瞬态由LIGO和Virgo合作在他们的科学运行从2005年到2007年。在这项工作中，我们提出了算法的细节;我们还使用了有限的数据量从LIGO的过去运行，以检查该方法，将其与其他方法进行比较，并确定其潜在的仪器本身的特征。我们研究的依赖关系，接收器的工作特性曲线上的否决方法和实施真实的数据的各种参数。我们发现，该方法鲁棒地确定重要的辅助通道，排序它们的引力波通道的相关性的明显的强度。该列表可以大大减少引力波数据中噪声事件的背景。通过这种方式，它可以识别探测器中的毛刺来源，并帮助建立对引力波瞬变探测的信心。
Interferometric gravitational-wave detectors like LIGO, GEO600 and Virgo record a surplus of information above and beyond possible gravitational-wave events. These auxiliary channels capture information about the state of the detector and its surroundings which can be used to infer potential terrestrial noise sources of some gravitational-wave-like events. We present an algorithm addressing the ordering (or equivalently optimizing) of such information from auxiliary systems in gravitational-wave detectors to establish veto conditions in searches for gravitational-wave transients. The procedure was used to identify vetoes for searches for unmodeled transients by the LIGO and Virgo collaborations during their science runs from 2005 through 2007. In this work we present the details of the algorithm; we also use a limited amount of data from LIGO's past runs in order to examine the method, compare it with other methods, and identify its potential to characterize the instruments themselves. We examine the dependence of receiver operating characteristic curves on the various parameters of the veto method and the implementation on real data. We find that the method robustly determines important auxiliary channels, ordering them by the apparent strength of their correlations to the gravitational-wave channel. This list can substantially reduce the background of noise events in the gravitational-wave data. In this way it can identify the source of glitches in the detector as well as assist in establishing confidence in the detection of gravitational-wave transients.
在第四次科学运行的 LIGO 数据中搜索引力波爆发
影响因子：
3.5
作者：
Abbott B
通讯作者：
Abbott B