Group Focus
We study multi-messenger and time-domain astrophysics, with a particular focus on high-energy gamma-ray transients and variable sources. Our research aims to understand the physical processes driving activity in active galactic nuclei (AGN) and to investigate the origin of astrophysical neutrinos. To address these questions, our group combines state-of-the-art theoretical models with broad multiwavelength observations of AGN and data from major multimessenger facilities, including the IceCube Neutrino Observatory and the ANTARES/KM3NeT Neutrino Telescopes.
The group is based at the University of Würzburg, at the Chair for Astronomy, and at DESY in Zeuthen (Germany). It is primarily supported by the ERC Starting Grant awarded to Prof. Buson in 2020 for the project MessMapp. Several additional research projects are also ongoing. The project HadroPrint (PI: Prof. Buson), starting in 2027 with support from the Deutsches Zentrum für Luft- und Raumfahrt (DLR, German Aerospace Center), aims to investigate the X-ray properties of AGN in connection with neutrinos. In addition, in 2027, the new project Jet Physics Across the Multimessenger Spectrum (PI: Prof. Buson), supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) within the DFG Research Unit Relativistic Jets, will investigate the real-time domain and neutrino astrophysics. The team is actively involved in several NASA missions and collaborations, including the Fermi-LAT Collaboration and the forthcoming COSI gamma-ray space telescope. We are also active members of the KM3NeT Collaboration.