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arXiv 1405.6589gr-qc
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双星黑洞并合探测器与地面引力波探测器的灵敏度比较

Sensitivity Comparison of Searches for Binary Black Hole Coalescences with Ground-based Gravitational-Wave Detectors

Satya Mohapatra, Laura Cadonati, Sarah Caudill, James Clark, Chad Hanna, Sergey Klimenko, Chris Pankow, Ruslan Vaulin, Gabriele Vedovato, Salvatore Vitale

摘要:

从二进制黑洞合并的引力波瞬变的搜索通常依赖于两种方法之一:匹配滤波与模板和形态无关的过剩功率搜索。在分析第一代地基引力波干涉仪的数据时,采用了多种算法来抑制非高斯噪声瞬变,并针对二元黑洞参数空间的不同区域。在本文中,我们比较了三个这样的算法的灵敏度:匹配滤波与完整的合并模板,匹配滤波与振铃模板和一个形态无关的多余的权力搜索。比较是在一个固定的误报率,并依赖于旋转,非旋进系统的总质量为25 - 350太阳质量,其中包括恒星质量和中间质量的黑洞二进制的参数空间的蒙特卡洛模拟的二进制黑洞合并。我们发现,在25 - 100太阳质量的质量范围内,搜索的敏感距离,边缘化的源参数,是最好的匹配滤波到全波形模板,在10%以内的误报率为每年3个事件。在100 - 350太阳质量的质量范围内,同样的比较有利于形态无关的过剩功率搜索到20%以内。还探讨了质量和自旋的依赖性。

英文摘要:

Searches for gravitational-wave transients from binary black hole coalescences typically rely on one of two approaches: matched filtering with templates and morphology-independent excess power searches. Multiple algorithmic implementations in the analysis of data from the first generation of ground-based gravitational wave interferometers have used different strategies for the suppression of non-Gaussian noise transients, and targeted different regions of the binary black hole parameter space. In this paper we compare the sensitivity of three such algorithms: matched filtering with full coalescence templates, matched filtering with ringdown templates and a morphology-independent excess power search. The comparison is performed at a fixed false alarm rate and relies on Monte-carlo simulations of binary black hole coalescences for spinning, non-precessing systems with total mass 25-350 solar mass, which covers the parameter space of stellar mass and intermediate mass black hole binaries. We find that in the mass range of 25 -100 solar mass the sensitive distance of the search, marginalized over source parameters, is best with matched filtering to full waveform templates, to within 10 percent at a false alarm rate of 3 events per year. In the mass range of 100-350 solar mass, the same comparison favors the morphology-independent excess power search to within 20 percent. The dependence on mass and spin is also explored.

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