Now showing items 1-4 of 761

    • Galactic Structure with Giant Stars 

      Grady, James
      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 

      Temple, Matthew
      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 

      Lilley, Edward
      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 

      Naik, Aneesh (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 ...