2017/06/13 by James Creswell, Sebastian von Hausegger, Andrew D. Jackson +2 · 1 voice · 26 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Focus (optics) #Gravitational wave #LIGO #Noise (video) #Pulsars and Gravitational Waves Research #Residual #SIGNAL (programming language) #Statistical Mechanics and Entropy #astro-ph.IM #gr-qc
paper · pdf · doi:10.1088/1475-7516/2017/08/013
published in Journal of Cosmology and Astroparticle Physics 2017(08), 013 (Institute of Physics) · The body of the current version is essentially identical to the previous one submitted to arxiv and JCAP. In order to meet the various suggestions of the referees, we have included an extended and detailed Appendix. This Appendix also contains significant new results that provide additional support for our conclusions. This version of our manuscript has been accepted for publication by JCAP
openalex created_date 2017/06/23 · arxiv created 2017/08/09 · openalex publication_date 2017/08/09 · arxiv updated 2017/08/23 · openalex updated_date 2026/08/05
To date, the LIGO collaboration has detected three gravitational wave (GW) events appearing in both its Hanford and Livingston detectors. In this article we reexamine the LIGO data with regard to correlations between the two detectors. With special focus on GW150914, we report correlations in the detector noise which, at the time of the event, happen to be maximized for the same time lag as that found for the event itself. Specifically, we analyze correlations in the calibration lines in the vicinity of 35 Hz as well as the residual noise in the data after subtraction of the best-fit theoretical templates. The residual noise for the other two events, GW151226 and GW170104, exhibits similar behavior. A clear distinction between signal and noise therefore remains to be established in order to determine the contribution of gravitational waves to the detected signals.