A new measure for the comparison of signals without templates and the detection of gravitational polarization in the GW150914 event

Abstract

We present a new measure for the comparison of unknown gravitational wave signals in two detectors, without recurring to an {\it a priori} template. We apply this measure to the LIGO data of the GW150914 event and discover that Hanford and Livingston observatories have recorded two different components of the gravitational wave polarization signal.

References in corpus (15)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
• Gravitational Waves from Mergin Compact Binaries: How Accurately Can One Extract the Binary's Parameters from the Inspiral Waveform?
• Properties of the Binary Black Hole Merger GW150914
• GW150914: First results from the search for binary black hole coalescence with Advanced LIGO
• Observing gravitational-wave transient GW150914 with minimal assumptions
• A Search for Tensor, Vector, and Scalar Polarizations in the Stochastic Gravitational-Wave Background
• First search for nontensorial gravitational waves from known pulsars
• Probing Dynamical Gravity with the Polarization of Continuous Gravitational Waves
• Polarization test of gravitational waves from compact binary coalescences
• Identifying strongly lensed gravitational wave signals from binary black hole mergers
• Prospects for gravitational-wave polarization test from compact binary mergers with future ground-based detectors
• Extraction of black hole coalescence waveforms from noisy data
• Investigating the noise residuals around the gravitational wave event GW150914
• Possible associated signal with GW150914 in the LIGO data