Characterizing instrumental noise and stochastic gravitational wave signals from combined time-delay interferometry

doi:10.1103/PhysRevD.106.044054

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	Characterizing instrumental noise and stochastic gravitational wave signals from combined time-delay interferometry
	Wang, Gang; Li, Bin1,2 ; Xu P(徐鹏); Fan, Xilong 6
发表期刊	PHYSICAL REVIEW D
	2022-08
卷号	106 期号:4 页码:44054
ISSN	2470-0010
摘要	LISA will detect gravitational waves (GWs) in the milli-Hz frequency band in space. Time-delay interferometry (TDI) is developed to suppress laser frequency noise beneath the acceleration noise and optical metrology noise. To identify stochastic GW signals, we need to characterize these noise components entangled in TDI data streams. In this work, we investigate noises characterization by combining the first -generation TDI channels from Michelson and Relay configurations. The Michelson channels are helpful to characterize acceleration noises in the lower frequency band, and the Relay configuration could effectively resolve optical path noises in the higher frequencies. Synergy could be achieved from their combination to determine these instrumental noises. Based on the characterized noises, we further reconstruct the power spectrum of noise in the selected TDI channel. Two cases are performed to characterize the spectrum shape of a stochastic GW signal. For a modeled signal, its parameter(s) could be directly estimated from the TDI data, and its spectrum could be recovered from the inferred values. And for an unexpected signal, its spectrum may be recognized and retrieved from noise-subtracted residual in which its power spectral density surpasses the noise level.
学科领域	Astronomy & Astrophysics ; Physics, Particles & Fields
DOI	10.1103/PhysRevD.106.044054
收录类别	SCI
语种	英语
WOS记录号	WOS:000861378300006
项目资助者	National Key R&D Program of China [2021YFC2201903, 2020YFC2201400] ; NSFC [12003059, 11933010, 11873097, 11922303]
论文分区	二类/Q1
力学所作者排名	3
RpAuthor	Wang, G (corresponding author), Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China.
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/90204
专题	微重力重点实验室
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210023, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 5.Lanzhou Univ, Lanzhou Ctr Theoret Phys, Lanzhou 730000, Peoples R China 6.Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Hangzhou 310124, Peoples R China 7.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Wang, Gang,Li, Bin,Xu P,et al. Characterizing instrumental noise and stochastic gravitational wave signals from combined time-delay interferometry[J]. PHYSICAL REVIEW D,2022,106,4,:44054.Rp_Au:Wang, G (corresponding author), Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China.
APA	Wang, Gang,Li, Bin,徐鹏,&Fan, Xilong.(2022).Characterizing instrumental noise and stochastic gravitational wave signals from combined time-delay interferometry.PHYSICAL REVIEW D,106(4),44054.
MLA	Wang, Gang,et al."Characterizing instrumental noise and stochastic gravitational wave signals from combined time-delay interferometry".PHYSICAL REVIEW D 106.4(2022):44054.

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