Improving the sensitivity of a search for coalescing binary black holes with nonprecessing spins in gravitational wave data

被引:85
|
作者
Privitera, Stephen [1 ]
Mohapatra, Satyanarayan R. P. [2 ,3 ,4 ]
Ajith, Parameswaran [5 ]
Cannon, Kipp [6 ]
Fotopoulos, Nickolas [1 ]
Frei, Melissa A. [2 ,3 ]
Hanna, Chad [7 ]
Weinstein, Alan J. [1 ]
Whelan, John T. [2 ,3 ]
机构
[1] CALTECH, LIGO Lab, Pasadena, CA 91125 USA
[2] Rochester Inst Technol, Ctr Computat Relat & Gravitat, Rochester, NY 14623 USA
[3] Rochester Inst Technol, Sch Math Sci, Rochester, NY 14623 USA
[4] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA
[5] Tata Inst Fundamental Res, Int Ctr Theoret Phys, Bangalore 560012, Karnataka, India
[6] Canadian Inst Theoret Astrophys, Toronto, ON M5S 38H, Canada
[7] Perimeter Inst Theoret Phys, Waterloo, ON N2L 6B9, Canada
来源
PHYSICAL REVIEW D | 2014年 / 89卷 / 02期
基金
美国国家科学基金会;
关键词
TEMPLATES;
D O I
10.1103/PhysRevD.89.024003
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We demonstrate for the first time a search pipeline with improved sensitivity to gravitational waves from coalescing binary black holes with spins aligned to the orbital angular momentum by the inclusion of spin effects in the search templates. We study the pipeline recovery of simulated gravitational wave signals from aligned-spin binary black holes added to real detector noise, comparing the pipeline performance with aligned-spin filter templates to the same pipeline with nonspinning filter templates. Our results exploit a three-parameter phenomenological waveform family that models the full inspiral-merger-ringdown coalescence and treats the effect of aligned spins with a single effective spin parameter chi. We construct template banks from these waveforms by a stochastic placement method and use these banks as filters in the recently developed GSTLAL search pipeline. We measure the observable volume of the analysis pipeline for binary black hole signals with M-total and chi is an element of [0, 0.85]. We find an increase in observable volume of up to 45% for systems with 0.2 <= chi <= 0.85 with almost no loss of sensitivity to signals with 0 <= chi <= 0.2. We also show that the use of spinning templates in the search pipeline provides for more accurate recovery of the binary mass parameters as well as an estimate of the effective spin parameter. We demonstrate this analysis on 25.9 days of data obtained from the Hanford and Livingston detectors in LIGO's fifth observation run.
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页数:10
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