Pearson cross-correlation in the first four black hole binary mergers

Abstract

We adopt the Pearson cross-correlation measure to analyze the LIGO Hanford and LIGO Livingston detector data streams around the events GW150914, GW151012,GW151226 and GW170104. We find that the Pearson cross-correlation method is sensitive to these signals, with correlations peaking when the black hole binaries reconstructed by the LIGO Scientific and Virgo Collaborations, are merging. We compare the obtained cross-correlations with the statistical correlation fluctuations arising in simulated Gaussian noise data and in LIGO data at times when no event is claimed. Our results for the significance of the observed cross-correlations are broadly consistent with those announced by the LIGO Scientific and Virgo Collaborations based on matched-filter analysis. In the same data, if we subtract the maximum likelihood waveforms corresponding to the announced signals, no residual cross-correlations persists at a statistically significant level.

arXiv comment17 pages, 6 figures; matches published version

References in corpus (26)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
• GW190425: Observation of a Compact Binary Coalescence with Total Mass $\sim 3.4M_{\odot }$
• Binary Black Hole Mergers in the first Advanced LIGO Observing Run
• Tests of General Relativity with the Binary Black Hole Signals from the LIGO-Virgo Catalog GWTC-1
• GW150914: The Advanced LIGO Detectors in the Era of First Discoveries
• A simple model of complete precessing black-hole-binary gravitational waveforms
• The PyCBC search for gravitational waves from compact binary coalescence
• FINDCHIRP: an algorithm for detection of gravitational waves from inspiraling compact binaries
• Can environmental effects spoil precision gravitational-wave astrophysics?
• Method for detection and reconstruction of gravitational wave transients with networks of advanced detectors
• A guide to LIGO-Virgo detector noise and extraction of transient gravitational-wave signals
• PyCBC Inference: A Python-based parameter estimation toolkit for compact binary coalescence signals
• The LIGO Open Science Center
• 1-OGC: The first open gravitational-wave catalog of binary mergers from analysis of public Advanced LIGO data
• A New Search Pipeline for Compact Binary Mergers: Results for Binary Black Holes in the First Observing Run of Advanced LIGO
• An information-theoretic approach to the gravitational-wave burst detection problem
• A morphology-independent search for gravitational wave echoes in data from the first and second observing runs of Advanced LIGO and Advanced Virgo
• A wider look at the gravitational-wave transients from GWTC-1 using an unmodeled reconstruction method
• On the time lags of the LIGO signals
• A blind search for a common signal in gravitational wave detectors
• Possible associated signal with GW150914 in the LIGO data
• Investigating the noise residuals around the gravitational wave event GW150914
• Noise residuals for GW150914 using maximum likelihood and numerical relativity templates
• Looking for ancillary signals around GW150914

Cited by in corpus (1)

• Gravitational wave echoes search with combs