@article{0ed90fe4d7c74b6c84a6f890a660ac2c,
title = "Noise subtraction from KAGRA O3GK data using Independent Component Analysis",
abstract = "During April 7–21 2020, KAGRA conducted its first scientific observation in conjunction with the GEO600 detector. The dominant noise sources during this run were found to be suspension control noise in the low-frequency range and acoustic noise in the mid-frequency range. In this study, we show that their contributions in the observational data can be reduced by a signal processing method called independent component analysis (ICA). The model of ICA is extended from that studied in the initial KAGRA data analysis to account for frequency dependence, while the linearity and stationarity of the coupling between the interferometer and the noise sources are still assumed. We identify optimal witness sensors in the application of ICA, leading to successful mitigation of these two dominant contributions. We also analyze the stability of the transfer functions for the entire two weeks of data to investigate the applicability of the proposed subtraction method in gravitational wave searches.",
keywords = "data analysis, gravitational wave, independent component analysis, noise subtraction",
author = "{the KAGRA Collaboration} and H. Abe and T. Akutsu and M. Ando and A. Araya and N. Aritomi and H. Asada and Y. Aso and S. Bae and Y. Bae and R. Bajpai and K. Cannon and Z. Cao and E. Capocasa and M. Chan and C. Chen and D. Chen and K. Chen and Y. Chen and Chiang, {C. Y.} and Chu, {Y. K.} and S. Eguchi and M. Eisenmann and Y. Enomoto and R. Flaminio and Fong, {H. K.} and Y. Fujii and Y. Fujikawa and Y. Fujimoto and I. Fukunaga and D. Gao and Ge, {G. G.} and S. Ha and Hadiputrawan, {I. P.W.} and S. Haino and Han, {W. B.} and K. Hasegawa and K. Hattori and H. Hayakawa and K. Hayama and Y. Himemoto and N. Hirata and C. Hirose and Ho, {T. C.} and Hsieh, {B. H.} and Hsieh, {H. F.} and C. Hsiung and Huang, {H. Y.} and M. Kakizaki and Y. Moriwaki and K. Yamamoto",
note = "Publisher Copyright: {\textcopyright} 2023 IOP Publishing Ltd.",
year = "2023",
month = apr,
day = "20",
doi = "10.1088/1361-6382/acc0cb",
language = "英語",
volume = "40",
journal = "Classical and Quantum Gravity",
issn = "0264-9381",
publisher = "IOP Publishing Ltd.",
number = "8",
}