Dark Matter Models

Astrophysical and cosmological observations across a vast range of scales, from dwarf galaxies to the size of the visible Universe (a few hundred light years to a few billion) indicate that Dark Matter drives structure formation. There is no known particle that can account for dark matter. Modifications of gravity cannot self-consistently explain the observations either. Thus we require a new type of particle, or particles, or some radically new physical laws and processes, to explain the observations. My research is all about trying to identify this new physics using astrophysics and cosmology.

My favourite dark matter models come under the class of particles known as "axions", and I am interested in all the physics related to this broad topic, from string theory to the large scale structure of the Universe; from quantum chromodynamics to gravitational microlensing; and from instantons to nuclear magnetic resonance. A large part of my work at Goettingen will be in collaboration with Prof. Jens Niemeyer and will focus on numerical simulations of "ultralight axions" and "fuzzy" dark matter: the lightest possible dark matter candidates and the frontier of our knowledge of structure formation.

My position at Göttingen is funded by the Sofja Kovaleskaja award of the Alexander von Humboldt Foundation, and by the Federal Ministry for Education and Research.

Students interested in Masters and PhD theses on these topics should contact me directly via email.