| Characterizing instrumental noise and stochastic gravitational wave signals from combined time-delay interferometry | |
Wang, Gang ; Li, Bin1,2; Xu P(徐鹏); Fan, Xilong6
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| Source Publication | PHYSICAL REVIEW D
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| 2022-08 | |
| Volume | 106Issue:4Pages:44054 |
| ISSN | 2470-0010 |
| Abstract | 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. |
| Subject Area | Astronomy & Astrophysics ; Physics, Particles & Fields |
| DOI | 10.1103/PhysRevD.106.044054 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000861378300006 |
| Funding Organization | National Key R&D Program of China [2021YFC2201903, 2020YFC2201400] ; NSFC [12003059, 11933010, 11873097, 11922303] |
| Classification | 二类/Q1 |
| Ranking | 3 |
| Contributor | Wang, G (corresponding author), Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/90204 |
| Collection | 微重力重点实验室 |
| Affiliation | 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 |
| Recommended Citation 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. |
| 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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| Jp2022FA227_2022_Cha（2825KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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