Progress of Taiji-2 Project

LUO Ziren; ZHANG Min; WANG Jianyu; WU Yueliang

doi:10.11728/cjss2024.04.2024-yg14

Progress of Taiji-2 Project

doi: 10.11728/cjss2024.04.2024-yg14 cstr: 32142.14.cjss2024.04.2024-yg14

LUO Ziren^{1, 2, 3},
ZHANG Min^{1, 2, 4},
WANG Jianyu^{2, 5},
WU Yueliang^{1, 2, 4}

1.
Taiji Laboratory for Gravitational Universe, University of Chinese Academy of Sciences, Beijing 100049
2.
Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024
3.
Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190
4.
International Center for Theoretical Physics Asia-Pacific, University of Chinese Academy of Sciences, Beijing 100190
5.
Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083

Funds: Supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA15021100), the National Natural Science Foundation of China (12147103) and the Fundamental Research Funds for the Central Universities

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Author Bio:
Male, born in August 1980 in Yongzhou, Hunan Province, is currently a professor researcher and doctoral supervisor at Institute of Mechanics, Chinese Academy of Sciences. His major research area includes space-borne gravitational wave detection, laser metrology, precise measurement, theoretical and experimental relativityE-mail: luoziren@imech.ac.cn

摘要

Abstract: Taiji-2 project is the second step of Taiji program, which is to verify the required technology for Taiji-3 mission. The feasibility study of Taiji-2 is successfully finished, and some of the main progress is introduced here.
- Gravitational wave /
- Taiji program /
- Taiji-2 project

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Figure 1. Taiji-3 constellation. Taiji-3 consists of 3 identical satellites which form a gigantic equilateral triangle. Each of the satellites takes an Earth-like heliocentric orbit. The constellation will be leading or trailing Earth for about 18°. Taiji-3 has the ability to detect the GW from intermediate or supermassive black hole mergers

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Figure 2. Taiji-2 satellites. The payload configuration of Taiji-2 satellite is designed to be as same as Taiji-3 in order to expand to 3-satellite constellation when there is second party to contribute additional satellite

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Figure 3. (a) Taiji-2 payload prototypes. (b) The torsion balance with DWS technique. (c) Payload integration scheme. (d) Test bed for Taiji-2 inter-satellite laser interferometric ranging

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Table 1. Comparison of computational time required by different posterior sampling approaches to generate their respective samples

Sampling method Numbers of samples Run time /s Time per sample/s

Nest sampling 11215 3000 0.26750
Normalization flow 10000 2.7 0.00027

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参考文献(9)

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