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Degeneracy of gravitational waveforms in the context of GW150914

文献类型：期刊论文

作者Jackson, AD; Liu H(刘浩); Creswell, J; Naselsky, P; von Hausegger, S; Liu, H
刊名JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期2018
期号3页码:7
ISSN号1475-7516
关键词gravitational waves experiments, gravitational waves sources, gravitational waves theory
DOI10.1088/1475-7516/2018/03/007
文献子类Article
英文摘要We study the degeneracy of theoretical gravitational waveforms for binary black hole mergers using an aligned-spin effective-one-body model. After appropriate truncation, bandpassing, and matching, we identify regions in the mass spin parameter space containing waveforms similar to the template proposed for GW150914, with masses m(1) = 36(-4)(+5)M(circle dot) and m(2) = 29(-4)(+4)M(circle dot), using the cross-correlation coefficient as a measure of the similarity between waveforms. Remarkably high cross-correlations are found across broad regions of parameter space. The associated uncertanties exceed these from LIGO's Bayesian analysis considerably. We have shown that waveforms with greatly increased masses, such as m1 = 70M(circle dot) and m(2) = 35M(circle dot), and strong anti-aligned spins (x1 = 0.95 and x2 = 0.95) yield almost the same signal-to-noise ratio in the strain data for GW150914.
WOS关键词BINARIES
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
WOS记录号WOS:000426936000007
源URL[http://ir.ihep.ac.cn/handle/311005/285719]  
专题高能物理研究所_粒子天体物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714		 Jackson, AD,Liu H,Creswell, J,et al. Degeneracy of gravitational waveforms in the context of GW150914[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2018(3):7.
APA Jackson, AD,刘浩,Creswell, J,Naselsky, P,von Hausegger, S,&Liu, H.(2018).Degeneracy of gravitational waveforms in the context of GW150914.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(3),7.
MLA Jackson, AD,et al."Degeneracy of gravitational waveforms in the context of GW150914".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .3(2018):7.

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来源：高能物理研究所

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