1 research outputs found
Noise in the LIGO Livingston Gravitational Wave Observatory due to Trains
Environmental seismic disturbances limit the sensitivity of LIGO
gravitational wave detectors. Trains near the LIGO Livingston detector produce
low frequency (0.5-10 Hz) ground noise that couples into the gravitational wave
sensitive frequency band (10-100 Hz) through light reflected in mirrors and
other surfaces. We investigate the effect of trains during the Advanced LIGO
third observing run, and propose a method to search for narrow band seismic
frequencies responsible for contributing to increases in scattered light.
Through the use of the linear regression tool Lasso (least absolute shrinkage
and selection operator) and glitch correlations, we identify the most common
seismic frequencies that correlate with increases in detector noise as 0.6-0.8
Hz, 1.7-1.9 Hz, 1.8-2.0 Hz, and 2.3-2.5 Hz in the LIGO Livingston corner
station.Comment: 18 pages (including bibliography), 17 figures, 2 tables, and 1
appendix. Submitted to Classical and Quantum Gravit