Ralf Kissmann's research focus lies on the fields of astroparticle physics, astrophysics and space physics. Common grounds for his work are applications of numerical methods to develop theoretical predictions as well as to compare to actual observations like the gamma-ray data from spaceborne (Fermi telescope) and ground-based (the H.E.S.S. atmospheric Cherenkov telescopes) telescopes. In the computational astroparticle physics group numerical tools are developed and applied to understand the origin and production processes of such high energy photons. For this the acceleration and transport of cosmic-ray particles is investigated together with the different emission processes of non-thermal radiation.
