New measuring technologies in the space-based gravitational waves detector TianQin

V. K. Milyukov

Sternberg Astronomical Institute, Lomonosov Moscow State University, Moscow

Al’manac of Modern Metrology № 4 (24) 2020, pages 316–336

TianQin is a project of the space-borne gravitational waves detector for recording GW events in the millihertz frequency range. The space detector relies on three identical drag-free spacecraft orbiting the Earth. The key technologies that form the principles of operation of the space GW detector are  an ultra-stable transponder-type laser interferometer and a disturbance reduction system. The paper discusses the basic principles of operation and the current state of key technologies being created in China. Given the current level of technological readiness, is expected, that TianQin will be launched in the second half of the next decade and will serve as a space Observatory for a wide class of astrophysical sources of gravitational waves.

Key words: space-borne gravitational waves detector; key technologies.

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