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 two more recent events, GW151226 and
GW170104, exhibits equivalent behavior with respect to each of their time lags.
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.
%0 Generic
%1 creswell2017signals
%A Creswell, James
%A von Hausegger, Sebastian
%A Jackson, Andrew D.
%A Liu, Hao
%A Naselsky, Pavel
%D 2017
%K LIGO signal
%T On the time lags of the LIGO signals
%U http://arxiv.org/abs/1706.04191
%X 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 two more recent events, GW151226 and
GW170104, exhibits equivalent behavior with respect to each of their time lags.
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.
@misc{creswell2017signals,
abstract = {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 two more recent events, GW151226 and
GW170104, exhibits equivalent behavior with respect to each of their time lags.
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.},
added-at = {2017-06-15T10:14:14.000+0200},
author = {Creswell, James and von Hausegger, Sebastian and Jackson, Andrew D. and Liu, Hao and Naselsky, Pavel},
biburl = {https://www.bibsonomy.org/bibtex/2da8eb06d05bb04e36a993112fb838555/miki},
description = {[1706.04191] On the time lags of the LIGO signals},
interhash = {f3fa6802f151da85374fda89b2208ce5},
intrahash = {da8eb06d05bb04e36a993112fb838555},
keywords = {LIGO signal},
note = {cite arxiv:1706.04191Comment: 15 pages, 9 figures},
timestamp = {2017-06-15T10:14:14.000+0200},
title = {On the time lags of the LIGO signals},
url = {http://arxiv.org/abs/1706.04191},
year = 2017
}