I am a cosmologist.
I work on various topics including the formation of structure in the Universe and gravitational radiation, but most of my research involves the Cosmic Microwave Background (CMB), light left over from the very early Universe.
I am a co-Investigator on ESA's Planck Satellite, which I work on with many other Planck Scientists from Imperial and all over the world. We released our first data and cosmology papers in March, 2013, and expect a new round of results in late 2014.
I am also on the teams for the EBEX and PolarBear CMB experiments, which are smaller-scale balloon and ground-based experiments targetting the polarization of the CMB. Earlier, I was involved in the analysis of data for some of the precursors to these experiments, starting with the MAXIMA and BOOMERaNG balloons which were the first to use maps of the CMB to measure the curvature of the Universe.
More broadly, I am interested in the statistical analysis of astrophysical and cosmological data, in particular the application of Bayesian techniques.
For the last few years, I have been teaching second-year undergraduate quantum mechanics. In the past, I have taught a fourth-year undergraduate cosmology course (for which some course materials are available).