I work on galaxy formation and clusters of galaxies. In the cold dark matter paradigm, the formation and evolution of galaxies are strongly coupled to that of the dark matter, and therefore a detailed knowledge of galaxy formation processes may serve as a fundamental check of the underlying cosmological model.

At IPMU, I plan to study 1) the role of mergers and feedback from supermassive black holes in the formation of massive galaxies, 2) the evolutionary connection between the present-day galaxies and those at z=1, using data from the HyperSuprimeCam, and 3) the constraining power on cosmology from galaxy clusters.