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Application of Newtonian approximate model to LIGO gravitational wave data processing |
| Jie Wu(吴洁)1,2, Jin Li(李瑾)1,2,†, and Qing-Quan Jiang(蒋青权)3,‡ |
1 College of Physics, Chongqing University, Chongqing 401331, China;
2 Department of Physics and Chongqing Key Laboratory for Strongly Coupled Physics, Chongqing University, Chongqing 401331, China;
3 School of Physics and Astronomy, China West Normal University, Nanchong 637009, China |
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Abstract With the observation of a series of ground-based laser interferometer gravitational wave (GW) detectors such as LIGO and Virgo, nearly 100 GW events have been detected successively. At present, all detected GW events are generated by the mergers of compact binary systems and are identified through the data processing of matched filtering. Based on matched filtering, we use the GW waveform of the Newtonian approximate (NA) model constructed by linearized theory to {match the events detected by LIGO and injections to determine the coalescence time and} utilize the frequency curve for data fitting to estimate the parameters of the chirp masses of binary black holes (BBHs). The average chirp mass of our results is 22.05-6.31+6.31 M⊙, which is very close to 23.80-3.52+4.83 M⊙ provided by GWOSC. In the process, we can analyze LIGO GW events and estimate the chirp masses of the BBHs. This work presents the feasibility and accuracy of the low-order approximate model and data fitting in the application of GW data processing. It is beneficial for further data processing and has certain research value for the preliminary application of GW data.
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Received: 18 March 2023
Revised: 18 May 2023
Accepted manuscript online: 25 May 2023
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PACS:
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04.30.-w
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(Gravitational waves)
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04.80.Nn
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(Gravitational wave detectors and experiments)
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97.60.Lf
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(Black holes)
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02.60.Ed
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(Interpolation; curve fitting)
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| Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2021YFC2203004), the National Natural Science Foundation of China (Grant No. 12147102), and the Sichuan Youth Science and Technology Innovation Research Team (Grant No. 21CXTD0038). |
Corresponding Authors:
Jin Li, Qing-Quan Jiang
E-mail: cqujinli1983@cqu.edu.cn;qqjiangphys@yeah.net
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Cite this article:
Jie Wu(吴洁), Jin Li(李瑾), and Qing-Quan Jiang(蒋青权) Application of Newtonian approximate model to LIGO gravitational wave data processing 2023 Chin. Phys. B 32 090401
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