Welcome to my astrophysics homepage. I am currently an SNF professor at the ETH Zurich, and a Lecturer at the University of Leicester. My main area of research is in astrophysical probes of dark matter. I study everything from the tiniest galaxies in the Universe, where we can measure how dark matter clusters on the smallest scales, to giant clusters of galaxies, where we can produce real images of the distribution of dark matter using the gravitational lensing effect.

For further information, please see my group pages here.