Theoretical Particle Physics and Cosmology
Blegdamsvej 17, 2100 København Ø, Bygning C, Building: Cb5
I am Professor in the Particle Theory Group of the Rudolf Peierls Centre for Theoretical Physics at the University of Oxford, where I have been a staff member since 1990. I was a frequent visitor to NORDITA while it was based at NBI and subsequently a Scientific Associate of the Discovery Center (2010-20).
My research is focussed on the interface between fundamental physics and astrophysics & cosmology - both theoretical and experimental. During 2013-18, I was awarded a Niels Bohr Professorship by the Danish National Research Foundation and spent half my time in Copenhagen during which I started both the experimental IceCube Group and the theoretical Astroparticle Physics Group. I am now an Affiliated Professor (2018-23) in Theoretical Particle Physics and Cosmology.
Primary fields of research
My research interests include dark matter, inflation and large-scale structure formation, the cosmology of neutrinos and other relic particles, primordial nucleosynthesis, cosmic microwave background etc. I also work on high energy cosmic rays, neutrinos and gamma-rays and participate in relevant experiments - the IceCube Neutrino Observatory at the South Pole and the forthcoming Cherenkov Telescope Array in Chile and Spain. NBI became a full member of the IceCube Collaboration in 2013 just before its breakthrough discovery of cosmic high energy neutrinos that have opened a new window on to the universe. The IceCube group is studying the fundamental properties of neutrinos through sensitive measurements of neutrino oscillations, as well as searching for neutrino signals of dark matter. I also collaborate with researchers in the CMB group who worked on ESA's Planck satellite mission and are now involved with the DeepSpace telescope in Greenland.