Sco X-1的源跟踪
Source Tracking for Sco X-1
摘要：
Sco X-1是最明亮的低质量X射线双星，可能是引力波发射源。在一种机制中，引力波的发射阻止了低质量X射线双星中由于吸积力矩而导致的自旋频率的增加。由于重力波形是未知的，因此优选假设没有信号的先验知识的检测方法。本文提出了一种基于相干网络分析的{ \it源跟踪}方法，用于寻找来自天蝎座X-1的引力波。在该方法中，我们结合了来自多个干涉引力波探测器的数据，考虑到Sco X-1的方向，并重建了两个偏振波形在Sco X-1的位置在天空中的Sco X-1是移动的。源跟踪方法开辟了搜索各种信号的可能性。我们进行蒙特卡罗模拟，并显示结果的突发，建模，短持续时间的周期源使用一个简单的过剩的功率和匹配滤波器的重建信号的方法。
英文摘要：
Sco X-1, the brightest low mass X-ray binary, is likely to be a source for gravitational wave emission. In one mechanism, emission of a gravitational wave arrests the increase in spin frequency due to the accretion torque in a low mass X-ray binary. Since the gravitational waveform is unknown, a detection method assuming no apriori knowledge of the signal is preferable. In this paper, we propose to search for a gravitational wave from Sco X-1 using a {\it source tracking} method based on a coherent network analysis. In the method, we combine data from several interferometric gravitational wave detectors taking into account of the direction to Sco X-1, and reconstruct two polarization waveforms at the location of Sco X-1 in the sky as Sco X-1 is moving. The source tracking method opens up the possibility of searching for a wide variety of signals. We perform Monte Carlo simulations and show results for bursts, modeled, short duration periodic sources using a simple excess power and a matched filter method on the reconstructed signals.
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