For the Planck-project, he supervises the development of software infrastructure, namely the Planck-simulation package, a scientific workflow engine (the ProC), and a data management component interfaced to it. Furthermore, he is member of the German Long Wavelength (GLOW) Consortium, and participates in the Magnetism Key Science Project of LOFAR. His current scientific work embraces investigations of energetic particles and magnetic fields in the large scale structure, theoretical cosmology, and information field theory. The latter is the application of information theory to problems of image reconstruction. It was successfully applied to cosmography, the mapping of the large scale structure as traced by galaxies, to analysis of the cosmic microwave background, and to radio astronomy. Research interests: Information field theory -- a Bayesian way for image reconstruction Cosmology and Cosmography: large-scale structure, cosmic microwave background, and the early universe Astro-particle physics & particle astrophysics Cosmic magnetism Radio astronomy