We present a study into the existence of the broad Fe Ka line, the hot nature of the ionised gas surrounding Active Galactic Nuclei, most commonly referred to as 'warm absorbers', and the AGN environment. We begin with an investigation of the Seyfert 1.5 galaxy NGC 3516. In our analysis, we use the Chandra telescope to explore the environment aroun...
The formation of structures in the universe is one of the major questions in cosmology, and numerical N body simulations are the primary instrument used to probe the non linear clustering. However, analytical understanding of this regime remains limited. To explore this regime we study a family of Einstein de Sitter models with cold power law initi...
,. Subdwarf B (sdB) stars are thought to be core helium-burning stars which populate on the extreme blue end of horizontal branch in a Teff-logg diagram. Their atmospheres are generally helium deficient. However, almost 10% of the total subdwarf population comprise stars with helium-rich atmospheres. Helium-rich subdwarf B (He-sdB) stars represent ...
United Kingdom
SuperWASP is a ground-based survey for transiting extrasolar planets. I present some of my contributions to the project's infrastructure and operations, as well as the discovery and characterisation of seven short-period, giant, transiting extrasolar planets and a 51-Jupiter-mass, transiting brown dwarf. Of particular note is the planet WASP-l7b, w...
United Kingdom
United Kingdom
United Kingdom
FR
Coronal holes exhibit a more rigid rotation with respect to the typical differential rotation at photospheric levels, and thus interchange magnetic reconnection happens at coronal hole boundaries. Transient brightenings (i.e. coronal bright points and X-ray jets) in and around coronal holes have been found to be signatures of this process. However,...
