Investigating the noise residuals around the gravitational wave event GW150914

Alex B. Nielsen, Alexander H. Nitz, Collin D. Capano, Duncan Brown

Research output: Contribution to journalArticle

5 Scopus citations


We use the Pearson cross-correlation statistic proposed by Liu and Jackson [1], and employed by Creswell et al. [2], to look for statistically significant correlations between the LIGO Hanford and Livingston detectors at the time of the binary black hole merger GW150914. We compute this statistic for the calibrated strain data released by LIGO, using both the residuals provided by LIGO and using our own subtraction of a maximum-likelihood waveform that is constructed to model binary black hole mergers in general relativity. To assign a significance to the values obtained, we calculate the cross-correlation of both simulated Gaussian noise and data from the LIGO detectors at times during which no detection of gravitational waves has been claimed. We find that after subtracting the maximum likelihood waveform there are no statistically significant correlations between the residuals of the two detectors at the time of GW150914.

Original languageEnglish (US)
Article number019
JournalJournal of Cosmology and Astroparticle Physics
Issue number2
StatePublished - Feb 12 2019



  • GR black holes
  • gravitational waves / experiments
  • gravitational waves / sources

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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