RESEARCH

I am a cosmologist working in a wide array of observational and theoretical areas, particularly the interface between the two.

A key theme to my research is observational constraints on standard and alternative explanations of the dark sector.

Currently I am primarily involved in co-ordinating the UK contribution to the Simons Observatory.

​

I have developed a pioneering approach to modified gravity on non-linear scales, which was selected as editor’s suggestion for PRD.

I was also the first person to extract a beyond-Newtonian quantity from cosmological N-body simulations.

These results are important for correctly interpreting and using the majority of the data from upcoming surveys.

A key ongoing aspect of my work is studying model-independent modified gravity frameworks that apply on non-linear scales, and generating quantitative predictions from them that can be used by upcoming surveys.

​

I have used Cosmic Microwave Background data to constrain the properties of dark matter, including model-independent constraints on the evolution of the dark matter density across cosmic time.

I have also studied scan strategies for ground based CMB experiments and how they can be used to mitigate systematics; in the process I developed a method for creating fast map-based simulations that include the effects of systematics coupled to the scan strategy.