As Professor of Astrophysics (Chair) at Göteborg University, I am conducting research on a wide range of subjects: black holes, quasars, neutron stars, gamma ray bursts, gravitational radiation, quantum gravity, accretion discs. My research deals with the extreme conditions of curvature, compactness, density, temperature and strength of gravity typical for high energy astronomical objects. These conditions often reflect fundamental laws of Nature and cannot be even approached in laboratories on Earth.

All my courses at Chalmers are given in English. I put a lot of effort to make my elementary courses interesting and enjoyable also for students with little mathematical background. My advanced courses are rather demanding. They cover physics of black holes, cosmology, and high-energy phenomena in stars and accretion disks.