China’s first step towards probing the expanding universe and the nature of gravity using a space borne gravitational wave antenna - INSPIRE

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China’s first step towards probing the expanding universe and the nature of gravity using a space borne gravitational wave antenna

Taiji Scientific

Collaboration

•

Yue-Liang Wu

Feb 24, 2021

7 pages

Published in:

Commun.Phys. 4 (2021) 1, 34

Published: Feb 24, 2021

DOI:

10.1038/s42005-021-00529-z

reference search47 citations

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Abstract: (submitter)

In this perspective, we outline that a space borne gravitational wave detector network combining LISA and Taiji can be used to measure the Hubble constant with an uncertainty less than 0.5% in ten years, compared with the network of the ground based gravitational wave detectors which can measure the Hubble constant within a 2% uncertainty in the next five years by the standard siren method. Taiji is a Chinese space borne gravitational wave detection mission planned for launch in the early 2030 s. The pilot satellite mission Taiji-1 has been launched in August 2019 to verify the feasibility of Taiji. The results of a few technologies tested on Taiji-1 are presented in this paper.

space-time: expansion
gravitational radiation detector: network
Hubble constant
gravitational radiation
LISA
satellite
gravitation
cosmological model: parameter space
confidence limit

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