Non-Gaussianity analysis of a gravitational wave background made by short-duration burst signals

2009/08/03 by Naoki Seto · 1 citation
Physics and Astronomy · #Astrophysics #Cosmology and Gravitation Theories #Detector #Gravitational wave #Non-Gaussianity #Optics #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #Statistical Mechanics and Entropy #Statistical physics #Superposition principle #astro-ph.CO #gr-qc

paper · pdf · doi:10.1103/physrevd.80.043003

published as Phys.Rev.D80:043003,2009 · 18 pages, to appear in PRD

arxiv created 2009/08/03 · openalex publication_date 2009/08/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

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, I₂ and V₂ defined by the Stokes parameters of individual GW burst signals. We also evaluate sensitivities of specific detector networks to these parameters.

Citations

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• Three-point statistics of cosmological stochastic gravitational waves