Stephan Rosswog is a Professor of Astrophysics in the Department of Astronomy and the Oskar Klein Centre at Stockholm University, Sweden. After obtaining a Ph.D. in theoretical physics at the University of Basel, Switzerland, he was an Advanced Fellow of the Particle Physics and Astronomy Research Council in Leicester, UK. In 2003, he became a Professor at Jacobs University in Bremen, Germany. Since 2012, he has been working at Stockholm University. He is interested in the multimessenger astrophysics of compact objects, with particular emphasis on their fluid dynamics, nucleosynthesis, and electromagnetic transients. He performs computer simulations of the physical processes at work in compact objects.