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	Degeneracy of gravitational waveforms in the context of gw150914
	Creswell, James1,2; Liu, Hao1,2,3; Jackson, Andrew D.4; von Hausegger, Sebastian1,2; Naselsky, Pavel1,2
刊名	Journal of cosmology and astroparticle physics
	2018-03-01
期号	3页码:18
关键词	Gravitational waves Experiments, gravitational waves Sources, gravitational waves Theory
ISSN号	1475-7516
DOI	10.1088/1475-7516/2018/03/007
通讯作者	Creswell, james(dgz764@alumni.ku.dk)
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
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000426936000007
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2178073
专题	高能物理研究所
通讯作者	Creswell, James
作者单位	1.Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark 2.Univ Copenhagen, Discovery Ctr, Blegdamsvej 17, DK-2100 Copenhagen, Denmark 3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle & Astrophys, 19B YuQuan Rd, Beijing, Peoples R China 4.Univ Copenhagen, Niels Bohr Int Acad, Blegdamsvej 17, DK-2100 Copenhagen, Denmark
推荐引用方式 GB/T 7714	Creswell, James,Liu, Hao,Jackson, Andrew D.,et al. Degeneracy of gravitational waveforms in the context of gw150914[J]. Journal of cosmology and astroparticle physics,2018(3):18.
APA	Creswell, James,Liu, Hao,Jackson, Andrew D.,von Hausegger, Sebastian,&Naselsky, Pavel.(2018).Degeneracy of gravitational waveforms in the context of gw150914.Journal of cosmology and astroparticle physics(3),18.
MLA	Creswell, James,et al."Degeneracy of gravitational waveforms in the context of gw150914".Journal of cosmology and astroparticle physics .3(2018):18.

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