Symmetry in Gravitational Wave Physics
A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".
Deadline for manuscript submissions: 30 September 2025 | Viewed by 234
Special Issue Editor
Special Issue Information
Dear Colleague,
Chinese scientists have proposed two schemes to detect gravitational waves in space, Taiji Program of the Chinese Academy of Sciences and TIANQIN of Sun Yat-sen University that orbit the Sun and the Earth, respectively, and all use triangular formation, but with different arm lengths.
In the “Taiji Program in Space” of the Chinese Academy of Sciences, three satellites in the formation of an equilateral triangle constitute a space-based wave observatory, which runs in the orbit around the Sun. The centre of mass of three satellites falls on the Earth’s orbit and the satellite spacing is 3 million kilometres. Each satellite contains two test masses. For free floating motion of the test masses, the satellites will use the drag-free control technology to protect the test masses against non-conservative force disturbances.
The laser interferometer and Inertial sensor are the key payloads for gravitational wave detection in space, and the accurate measurement of distance change is extremely demanding, the displacement noise budget of the interferometry system is in the order of 8 pm/Hz1/2 (0.1 mHz–1 Hz), and the residual acceleration noise of the inertial sensor is 3 × 10-15 ms-2/Hz1/2 (0.1 mHz–1 Hz) along the measuring axis.
Dr. Zhi Wang
Guest Editor
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Keywords
- gravitational wave
- laser interferometer
- telescope
- inertial sensor
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