The group specializes in observational and theoretical high energy
astrophysics with emphasis on radiation processes in highly energetic
plasmas and interpretation of the broad band observations of active
galactic nuclei (AGN), X-ray binaries, pulsars, and 
-ray bursts.
Observations are both space-based (ASCA, CGRO, RXTE) and ground-based (NOT,
ESO, etc.). Archival data are also used. The group participates in the
experimental team for the Spectrum Röntgen-Gamma (SRG) satellite and is
Co-Investigator for the Joint European X-ray Monitor (JEM-X) on INTEGRAL.