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2D power spectrum of source brightness for a very simple source model.

2D power spectrum of source brightness for a very simple source model.

The study of the Epoch of Reionisation (EoR) is one of the primary goals of large low-frequency radio telescopes, such as Western Australia’s Murchison Widefield Array (MWA) and the future Square Kilometre Array. The principal challenge in these studies are the overwhelming foreground sources of noise, including the emission from every galaxy in the known Universe. While a number of promising approaches have been proposed to mitigate these obscuring sources, they typically require high-fidelity statistical models of the foreground population. This project will explore a semi-empirical technique based on Halo Occupation Distributions (HODs) or Conditional Luminosity Functions (CLFs) to provide intuitive and quick estimates of the statistical properties of the extra-galactic foregrounds. The work will be constrained both observationally by the MWA GLEAM survey, and also by semi-analytic simulations.

Sky brightness distribution for a simple model including source clustering.

Sky brightness distribution for a simple model including source clustering.

This project may be part of the ARC Centre of Excellence for All-Sky Astrophysics in 3D (ASTRO-3D) EoR program, with potential for scholarship funding.

Co-Supervisors

A/Prof Cathryn Trott

ARC Future Fellow

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A/Prof Chris Power

Principal Research Fellow

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Dr Claudia Lagos

Senior Research Fellow and ASTRO 3D Fellow

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