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arXiv:1706.04191astro-ph.IM

On the time lags of the LIGO signals

James Creswell, Sebastian von Hausegger, Andrew D. Jackson, Hao Liu, Pavel Naselsky

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 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.

arXiv comments
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
Journal reference
DOI
doi:10.1088/1475-7516/2017/08/013
Subjects
astro-ph.IMInstrumentation and Methods for Astrophysics gr-qcGeneral Relativity and Quantum Cosmology

On Hacker News

Linked by 2 identifiable commenters in 2 comments across 2 threads, from Jul 2017 to Nov 2018. Found in 1 HN submission from Jun 2017 to Jun 2017. Open submission discussions.

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Discussed in comments2 threads

  1. Danish physicists claim to cast doubt on detection of gravitational waves 1 comment

    • The article keeps talking about "Danish" this and that. The only one of the so called Danish physicists quoted in the article is Andrew Jackson who is American. I believe this is the paper it all relates to: https://arxiv.org/abs/1706.04191 None of the authors are Danish, but…

      flexieView on HNParent context

  2. Strange Noise in Gravitational-Wave Data Sparks Debate 1 comment

    • no. LIGO released the non-processed data, and the other scientists processed it separately without using (presumably high-bandpass) filters that the LIGO scientists used. page 3: https://arxiv.org/pdf/1706.04191.pdf

      dnauticsView on HNParent context

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