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    Advanced statistical methods for detecting the Epoch of Reionisation

    Cook JH 2023 Public.pdf (9.904Mb)
    Access Status
    Open access
    Authors
    Cook, Jaiden Hue
    Date
    2023
    Supervisor
    Cathryn Trott
    Jack Line
    Type
    Thesis
    Award
    PhD
    
    Metadata
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    Faculty
    Science and Engineering
    School
    School of Electrical Engineering, Computing and Mathematical Sciences
    URI
    http://hdl.handle.net/20.500.11937/94798
    Collection
    • Curtin Theses
    Abstract

    This thesis investigates the widefield foreground contamination on the expected 21cm power spectrum, by modelling these sources with multi-component 2D Gaussians. Additionally, we calculate the skew spectrum for a set of seven cosmological 21cm simulations, characterising how the higher order statistic changes with respect to the X-ray heating and ionisation topologies. We then develop an analytical framework for estimating the interferometric skew spectrum, applying this to realistic foreground models, and to a fiducial 21cm simulation.

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