For more details on my research see my website.
My research deals with trying to understand cosmology and astrophysics during the first billion years of the Universe. My main research interests lie in understanding the astrophysics of the 21 cm line of hydrogen with a view to making predictions for the upcoming generation of low-frequency radio telescopes, such as LOFAR, MWA, HERA, and SKA. These observations have enormous potential to tell us about the first stars and galaxies and the evolution of structures in the early Universe. In recent years, I have become more involved in the application of Bayesian statistics to the analysis of these upcoming datasets. Beyond that my interests are broad ranging from ways of probing neutrino masses, to the physics of inflation, to galaxy formation.
I lead the ERC funded FIRSTDAWN project investigating better ways of predicting and interpreting the 21cm signal in synergy with intensity mapping of other atomic and molecular lines. I am also currently chair of the SKA Epoch of Reionization science working group and actively involved in preparation for SKA observations in around 2020.
Before coming to Imperial, I was a Hubble-ITC fellow at the Harvard-Smithsonian Center for astrophysics where I worked on topics of reionization and the 21 cm line with Avi Loeb and others. My graduate work was done at Caltech with my advisor Marc Kamionkowski and with Steve Furlanetto. Before that I was an undergraduate at Cambridge in the UK.
Curriculum Vitae: pdf