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• #### Galactic Structure with Giant Stars ﻿

The content of this thesis derives from three projects conducted during my Ph.D, focusing on both the Milky Way and the Magellanic Clouds. I deploy long period variables, especially Miras, as chronometers to study the ...
• #### Outflows and Dust in Quasars ﻿

Supermassive black holes (SMBHs) at the centres of galaxies are known to actively accrete, forming so-called active galactic nuclei' (AGN) or quasars'. These AGN are believed to feed back energy into their host galaxies, ...
• #### Basis Sets in Galactic Dynamics ﻿

Since their introduction in 1972 by Clutton-Brock, so-called biorthogonal basis sets have become a popular tool in galactic dynamics. They provide a method of solving Poisson's equation that scales linearly with the number ...
• #### Galaxy-Scale Signatures of Screened Modified Gravities ﻿

(2020-11-28)
In recent years, theories of gravity incorporating a scalar field coupled to gravity---'scalar-tensor' theories---have been subject to increased attention. In these theories, the scalar field mediates gravitational-strength ...