Abstract
The Taiji Program in Space for gravitational wave physics and the nature of gravity
Highlights
The discovery of gravitational waves (GWs) by the LIGO collaboration [1] in 2016 has provided a direct test on the prediction made by Albert Einstein a century ago based on his general theory of relativity [2]
The Chinese Academy of Sciences (CAS) has set up a strategic priority research program that includes the pre-study of space-based GW detection referred to as the ‘Taiji Program in Space’ [5]
Space-based GW detection needs to make use of gravitational reference sensors and a low-noise microthruster to implement drag-free performance as well as non-contacting discharging of test masses for free-flying test mass. It requires picometer optical assemblies for resolution ranging between the test masses and the spacecraft and high-stability monolithic precision ranging of test mass and spacecraft
Summary
The discovery of gravitational waves (GWs) by the LIGO collaboration [1] in 2016 has provided a direct test on the prediction made by Albert Einstein a century ago based on his general theory of relativity [2]. The Chinese Academy of Sciences (CAS) has set up a strategic priority research program that includes the pre-study of space-based GW detection referred to as the ‘Taiji Program in Space’ [5]. GWs are expected to provide a new window to explore the evolution of early universe and the nature of gravity.
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