nelson.christensen@LIGO.ORG - posted 12:58, Monday 12 October 2015 - last comment - 20:03, Monday 12 October 2015(22441)
H1-L1 coherence over O1 so far
Here are the observed H1-L1 coherences as of October 12, 2015, as calculated by stochmon: https://ldas-jobs.ligo.caltech.edu/~thomas.callister/stochmonO1/stochmon.html Some plots attached. 100 mHz resolution. 1E-5 is the expected level of coherence due to uncorrelated noise. Frequency, coherence 33.6 Hz, 1E-3 34.6 Hz, 2E-2 35.4 Hz, 1E-3 42.5 Hz, 6E-4 (barely above background, could be a noise fluctuation) 64.0 Hz, 2E-4 (barely above background, could be a noise fluctuation) 74.0 Hz, 5E-4 (barely above background, could be a noise fluctuation) 128.0 Hz, 1E-2 256.0 Hz, 2E-3 331.8 Hz, 3E-4 (barely above background, could be a noise fluctuation) 351.1 Hz, 4E-4 (barely above background, could be a noise fluctuation) 559.9 Hz, 2E-4 (barely above background, could be a noise fluctuation) 736.0 Hz, 3E-3 (23rd harmonic of 32 Hz) 1904.0 Hz, 2E-3 (119th harmonic of 16 Hz) 2160.0 Hz, 4E-4 (135th harmonnic of 16 Hz) 2376.0 Hz, 4E-3 (297th harmonic of 8 Hz) 2768.0 Hz, 7E-3 (173rd harmonic of 16 Hz) 2984.0 Hz, 7E-4 (373rd harmonic of 8 Hz) 3001.2 Hz, 1E-1 (calibration lines) 4928.0 Hz, 3E-3 (77th harmonic of 64 Hz) 5016.0 Hz, 3E-3 (627th harmonic of 8 Hz) 5144.0 Hz, 2E-1 (largest coherence, 643rd harmonic of 8 Hz) 5616.0 Hz, 2E-3 (351st harmonic of 16 Hz) 5624.1 Hz, 6E-3 0.25 Hz, 4E-6 is the expected level of coherence due to uncorrelated noise. Frequency, coherence 34.25 to 35.25 Hz, 1E-3 36 to 37 Hz, 1.5E-3 37.25 Hz, 2E-3 42.5 Hz, 2E-4 128.0 Hz, 3E-3 256 Hz, 6E-4 1904.0 Hz, 4E-4 (119th harmonic of 16 Hz) 3552.25 Hz, 2E-4 4163.75 Hz, 5E-3 Hz 4576.0 Hz, 2E-4 (143rd harmonic of 32 Hz) 5016.0 Hz, 7E-4 (627th harmonic of 8 Hz) 5144.0 Hz, 1E-1 (largest coherence, 643rd harmonic of 8 Hz) 5584.5 Hz, 2E-2 5655.5 Hz, 1E-3
Images attached to this report
Comments related to this report
Continues the study on the H1-L1 h(t) coherence to date for O1. 0.001 Hz resolution, 2E-3 is the expected level of coherence due to uncorrelated noise. 0.5 Hz harmonics are seen in the H1-L1 coherence, averaged over all of O1 to data. See figures. Various other lines to be seen as well. Frequency, Coherence 18.50 Hz, 3E-2 19.00 Hz, 3E-2 19.50 Hz, 4E-2 20.00 Hz, 3.5E-2 23.50 Hz, 2.5E-2 25.00 Hz, 3E-2 25.50 Hz, 2.5E-2 32.00 Hz, 2E-2 36.7 Hz, 3E-2 42.5 Hz, 3E-2 43.0 Hz, 5E-2 48.0 Hz, 4E-2 61.243 Hz, 2E-2 71.0 Hz, 7E-2 71.50 Hz, 3E-2 100.00 Hz, 7E-2 128.00 Hz, 5E-1 256.00 Hz, 2E-1 896.0 Hz, 3.5E-2 952.0 Hz, 7E-2 1080.0 Hz, 1.5E-1
Images attached to this comment
