The cross-correlation search for a hot spot of gravitational waves : Numerical study for point spread function
The cross-correlation search for a hot spot of gravitational waves : Numerical study for point spread function
复制标题
引力波热点的互相关搜索：点扩散函数的数值研究
DOI：
10.1088/1742-6596/363/1/012040
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Hideyuki Tagoshi and Hirotaka Takahashi
中科院分区：
文献类型：
--
作者：
Yuta Okada;Nobuyuki Kanda;Sanjeev Dhurandhar;Hideyuki Tagoshi and Hirotaka Takahashi
引力波的相互关联搜索，也被称为“辐射测量”，以前被应用于绘制天空中引力波的随机背景图，也用于定位旋转中子星/脉冲星发出的引力波。我们考虑室女座星系团，它可能出现在一个‘热点’跨越几个像素在天空辐射分析。我们的结果表明，通过一年数量级的积分，可以积累足够的信噪比。我们还提出了辐射分析的数值模拟，假设地基探测器目前正在建设或正在升级。数值试验证实了注入源的点扩散函数。辐射分析的典型分辨率是几平方度，而在全天空图中，整个天空的分辨率是几千像素。
The cross-correlation search for gravitational waves, also known as' radiometry', has been previously applied to map the gravitational wave stochastic background in the sky and also to target gravitational waves from rotating neutron stars/pulsars. We consider the Virgo cluster which may appear as a'hot spot'spanning few pixels in the sky in a radiometry analysis. Our results show that sufficient signal to noise ratio can be accumulated with integration times of the order of a year. We also present a numerical simulation of radiometric analysis, assuming ground-based detectors which are currently under construction or being upgraded. The point spread function of the injected sources is confirmed by numerical tests. The typical resolution of radiometry analysis is a few square degrees, as compared to the several thousand pixels for the full sky in an all-sky map.