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arXiv 0707.0128gr-qc
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首次模拟LISA数据挑战中白矮星双星的F-统计量搜索

F-statistic search for white-dwarf binaries in the first Mock LISA Data Challenge

Reinhard Prix, John T. Whelan

摘要:

F统计量是连续引力波的最佳检测统计量,即,具有缓慢变化的固有频率的长持续时间(准)单色信号。该方法最初是在地基探测器的背景下开发的,但它同样适用于LISA,其中许多信号都属于此类信号。我们报告的LIGO/GEO F-统计代码LISA数据分析使用长波长限制(LWL)的应用程序,我们目前的搜索结果白矮星二进制信号在第一次模拟LISA数据挑战。有些令人惊讶的是,LWL被发现是足够的-即使在高频率-检测信号和它们的准确定位在天空和频率,而更准确的建模的TDI响应似乎只需要正确地估计四个振幅参数。

英文摘要:

The F-statistic is an optimal detection statistic for continuous gravitational waves, i.e., long-duration (quasi-)monochromatic signals with slowly-varying intrinsic frequency. This method was originally developed in the context of ground-based detectors, but it is equally applicable to LISA where many signals fall into this class of signals. We report on the application of a LIGO/GEO F-statistic code to LISA data-analysis using the long-wavelength limit (LWL), and we present results of our search for white-dwarf binary signals in the first Mock LISA Data Challenge. Somewhat surprisingly, the LWL is found to be sufficient -- even at high frequencies -- for detection of signals and their accurate localization on the sky and in frequency, while a more accurate modelling of the TDI response only seems necessary to correctly estimate the four amplitude parameters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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