Efficient filter for detecting gravitational wave bursts in interferometric detectors
Efficient filter for detecting gravitational wave bursts in interferometric detectors
复制标题
用于检测干涉探测器中的引力波爆发的高效滤波器
DOI：
10.1103/physrevd.63.042002
复制
发表时间：
2000
影响因子：
5
通讯作者：
P. Hello
中科院分区：
文献类型：
--
作者：
T. Pradier;N. Arnaud;M. Bizouard;F. Cavalier;M. Davier;P. Hello
引力波爆发的典型来源是超新星，但目前还没有精确的模型。这就要求在预测干涉探测器的数据分析中采用高效率、鲁棒性强的搜索方法。一组这样的过滤器被设计用来探测引力波爆发信号。我们首先在给定的时间窗口内提出基于白化数据与短直线线性拟合的滤波器，并将它们组合在一个称为ALF的非线性滤波器中。我们在模拟超新星信号的帮助下研究了这些滤波器的性能和效率。ALF过滤器是所有过滤器中性能最好、效率最高的。其性能达到相同信号设计的最佳滤波器性能的80%左右。这种滤波器可以在引力波干涉探测器中作为在线触发器（专门用于检测未知波形的爆发）来实现。
Typical sources of gravitational wave bursts are supernovae, for which no accurate models exist. This calls for search methods with high efficiency and robustness to be used in the data analysis of foreseen interferometric detectors. A set of such filters is designed to detect gravitational wave burst signals. We first present filters based on the linear fit of whitened data to short straight lines in a given time window and combine them in a nonlinear filter named ALF. We study the performances and efficiencies of these filters, with the help of a catalogue of simulated supernova signals. The ALF filter is the best performing and most efficient of all filters. Its performance reaches about 80% of the optimal filter performance designed for the same signals. Such a filter could be implemented as an online trigger (dedicated to detect bursts of unknown wave form) in interferometric detectors of gravitational waves.