Application of Newtonian approximate model to LIGO gravitational wave data processing

doi:10.1088/1674-1056/acd8a3

中国物理B ›› 2023, Vol. 32 ›› Issue (9): 90401-090401.doi: 10.1088/1674-1056/acd8a3

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

收稿日期:2023-03-18 修回日期:2023-05-18 接受日期:2023-05-25 发布日期:2023-09-01
通讯作者: Jin Li, Qing-Quan Jiang E-mail:cqujinli1983@cqu.edu.cn;qqjiangphys@yeah.net
基金资助:
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).

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

Received:2023-03-18 Revised:2023-05-18 Accepted:2023-05-25 Published:2023-09-01
Contact: Jin Li, Qing-Quan Jiang E-mail:cqujinli1983@cqu.edu.cn;qqjiangphys@yeah.net
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: gravitational waves, black holes, matched filtering, data fitting

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.

Key words: gravitational waves, black holes, matched filtering, data fitting

中图分类号: (Gravitational waves)

04.30.-w

04.80.Nn (Gravitational wave detectors and experiments) 97.60.Lf (Black holes) 02.60.Ed (Interpolation; curve fitting)

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[J]. 中国物理B, 2023, 32(9): 90401-090401.

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[J]. Chin. Phys. B, 2023, 32(9): 90401-090401.

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Application of Newtonian approximate model to LIGO gravitational wave data processing

Application of Newtonian approximate model to LIGO gravitational wave data processing

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