Search techniques for gravitational waves from black-hole ringdowns
Search techniques for gravitational waves from black-hole ringdowns
复制标题
黑洞振铃中引力波的搜索技术
DOI：
10.1103/physrevd.60.022001
复制
发表时间：
1999
影响因子：
5
通讯作者：
J. Creighton
中科院分区：
文献类型：
--
作者：
J. Creighton
在所有天文引力辐射源中，由旋转黑洞的微小扰动产生的振铃波形可能是最容易理解的：对于这种扰动的后期阶段，波形只是指数衰减的正弦曲线。搜索干涉引力波天线数据来寻找这些应该是相对容易的。在本文中，我提出了一个单一的过滤器搜索的结果所产生的振铃波形从50太阳质量的黑洞，其最大自旋角动量的98%，使用的数据从加州理工学院40米原型干涉仪。这种搜索说明了技术，可用于分析数据，从未来的大规模干涉仪，并描述了一些困难，目前在干涉仪数据的分析。最重要的是，它说明了在两个独立的干涉仪（在这里模拟40米的数据在两个不同的时间）的输出中使用的重合事件，以大大降低假事件率。这种符合将是未来在更大尺度的干涉仪中进行引力波搜索的必要工具。
Of all the astronomical sources of gravitational radiation, the ringdown waveform arising from a small perturbation of a spinning black hole is perhaps the best understood: for the late stages of such a perturbation, the waveform is simply an exponentially damped sinusoid. Searching interferometric gravitational wave antenna data for these should be relatively easy. In this paper, I present the results of a single-filter search for ringdown waveforms arising from a 50 solar mass black hole with $98%$ of its maximum spin angular momentum using data from the Caltech 40-m prototype interferometer. This search illustrates the techniques that may be used in analyzing data from future kilometer-scale interferometers and describes some of the difficulties present in the analysis of interferometer data. Most importantly, it illustrates the use of coincident events in the output of two independent interferometers (here simulated by 40-m data at two different times) to substantially reduce the spurious event rate. Such coincidences will be essential tools in future gravitational wave searches in kilometer-scale interferometers.