Non-Gaussianity analysis of GW background made by short-duration burst signals

Abstract

We study an observational method to analyze non-Gaussianity of a gravitational wave (GW) background made by superposition of weak burst signals. The proposed method is based on fourth-order correlations of data from four detectors, and might be useful to discriminate the origin of a GW background. With a formulation newly developed to discuss geometrical aspects of the correlations, it is found that the method provides us with linear combinations of two interesting parameters, I_2 and V_2 defined by the Stokes parameters of individual GW burst signals. We also evaluate sensitivities of specific detector networks to these parameters.

arXiv comment18 pages, to appear in PRD

References in corpus (29)

• Gravitational Wave Experiments and Early Universe Cosmology
• Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in Space
• Detecting a stochastic background of gravitational radiation: Signal processing strategies and sensitivities
• The Sensitivity of Ligo to a Stochastic Background, and its Dependance on the Detector Orientations
• The LISA Optimal Sensitivity
• Stable Operation of a 300-m Laser Interferometer with Sufficient Sensitivity to Detect Gravitational-Wave Events within our Galaxy
• A new cosmic microwave background constraint to primordial gravitational waves
• Probing non-tensorial polarizations of stochastic gravitational-wave backgrounds with ground-based laser interferometers
• Skewness and Kurtosis in Large-Scale Cosmic Fields
• Detection of Anisotropies in the Gravitational-Wave Stochastic Background
• Searching for a Stochastic Background of Gravitational Waves with LIGO
• Stochastic Gravitational Wave Background from Cosmological Supernovae
• Measuring a Parity Violation Signature in the Early Universe via Ground-based Laser Interferometers
• Gravitational wave radiometry: Mapping a stochastic gravitational wave background
• Mapping the gravitational wave background
• Polarization analysis of gravitational-wave backgrounds from the correlation signals of ground-based interferometers: measuring a circular-polarization mode
• Detection methods for non-Gaussian gravitational wave stochastic backgrounds
• Prospects for direct detection of circular polarization of gravitational-wave background
• Detecting an association between Gamma Ray and Gravitational Wave Bursts
• Quest for circular polarization of gravitational wave background and orbits of laser interferometers in space
• Correlation analysis of stochastic gravitational wave background around 0.1-1Hz
• Gravitational Waves from the First Stars
• Studying the anisotropy of the gravitational wave stochastic background with LISA
• Annual modulation of the Galactic binary confusion noise bakground and LISA data analysis
• Detecting a Stochastic Gravitational-Wave Background: The Overlap Reduction Function
• Detection regimes of the cosmological gravitational wave background from astrophysical sources
• Probing anisotropies of gravitational-wave backgrounds with a space-based interferometer III: Reconstruction of a high-frequency skymap
• Non-Gaussianity test for discriminating gravitational wave backgrounds around 0.1-1Hz
• Gaussianity of LISA's confusion backgrounds

Cited by in corpus (16)

• Detection methods for stochastic gravitational-wave backgrounds: a unified treatment
• Characterizing the Cosmological Gravitational Wave Background Anisotropies and non-Gaussianity
• Forecast constraints on cosmic string parameters from gravitational wave direct detection experiments
• Maximum likelihood map-making with the Laser Interferometer Space Antenna
• The stochastic background from cosmic (super)strings: popcorn and (Gaussian) continuous regimes
• Measuring the non-Gaussian stochastic gravitational-wave background: a method for realistic interferometer data
• A Semi-Parametric Approach to the Detection of Non-Gaussian Gravitational Wave Stochastic Backgrounds
• 3-pt Statistics of Cosmological Stochastic Gravitational Waves
• When is a gravitational-wave signal stochastic?
• Tracking the origin of black holes with the stochastic gravitational wave background popcorn signal
• Probing a stationary non-Gaussian background of stochastic gravitational waves with pulsar timing arrays
• Gravitational wave non-linearities and pulsar-timing array angular correlations
• Deep learning for intermittent gravitational wave signals
• Searching for Bispectrum of Stochastic Gravitational Waves with Pulsar Timing Arrays
• Improved detection statistics for non Gaussian gravitational wave stochastic backgrounds
• Spectrogram correlated stacking: A novel time-frequency domain analysis of the Stochastic Gravitational Wave Background