Cosmological gravitational waves and related aspects of data analysis

    Research output: ThesisDoctoral Thesis

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    Abstract

    [Truncated] Gravitational wave research spans many disciplines, from gravitational wave source modelling to the analysis of signals and noise. This Thesis presents research that encompasses both of these extremes. A major part is devoted to investigating gravitational wave backgrounds from astrophysical sources throughout the Universe. This is followed by studies of real detector signal, and of environmental noise that impacts on the performance of gravitational wave detectors. Cosmological gravitational wave backgrounds from core-collapse supernovae and the objects generating gamma-ray bursts are modelled, providing detection estimates. Using recent models of gravitational wave emission from the core-collapse of massive stars and observation-based models for the cosmological evolution of the star formation rate, the cosmological background of gravitational waves from neutron star formation throughout the Universe is calculated. Numerical estimates for a proposed gravitational wave background from black hole-torus systems are presented. Using a single-source model developed by van Putten and source rate evolution models obtained from gamma-ray burst observations and star formation rates, background spectra are calculated using three standard cosmologies. The results suggest that the proposed background could be detectable within one year by cross-correlating data from two advanced LIGO type detectors.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    • The University of Western Australia
    DOIs
    Publication statusUnpublished - 2002

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