What is it about?
The Laser Interferometer Gravitational-Wave Observatory (LIGO) is an extremely sensitive detector and susceptible to local noise. We have developed a method using linear regression algorithms to identify these noise sources and to measure their effect on the gravitational-wave observatory.
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Why is it important?
Our method avoids direct experimentation at the LIGO sites; it can be implemented remotely with currently available resources. It uses low-frequency ground motion (generated by thunderstorms and other environmental phenomena) to characterize the effect of this noise in the observatory. This characterization task is commonly performed on-site using electrodynamic shakers. Therefore, our method reduces the number of these physical injections and the inconvenience of finding shakers with operational ranges below 10 Hz.
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This page is a summary of: A characterization method for low-frequency seismic noise in LIGO, Applied Physics Letters, December 2022, American Institute of Physics, DOI: 10.1063/5.0122495.
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