Newtonian-noise cancellation in full-tensor gravitational-wave detectors

Understand

Terrestrial gravity noise, also known as Newtonian noise, produced by ambient seismic and infrasound fields will pose one of the main sensitivity limitations in low-frequency, ground-based, gravitational-wave (GW) detectors.

• It was estimated that this noise foreground needs to be suppressed by about 3 -- 5 orders of magnitude in the frequency band 10\,mHz to 1\,Hz, which will be extremely challenging.
• In this article, we present a new approach that greatly facilitates cancellation of gravity noise in full-tensor GW detectors.
• The method uses optimal combinations of tensor channels and environmental sensors such as seismometers and microphones to reduce gravity noise.