Shocks, polarisation, and high-energy emission: Probing black hole jets from VLBI to IXPE

by Dr Georgios F. Paraschos (UTU)

Friday Jul 24, 2026, 10:30 AM → 12:30 PM Europe/Berlin

SR05 (Villa)

Relativistic jets launched by accreting supermassive black holes are fundamental
drivers of feedback in galaxies, yet the location and mechanisms responsible for high-energy γ-ray emission remain uncertain. I will present recent multimessenger studies combining VLBI imaging, IXPE X-ray and optical polarimetry, γ-ray monitoring, and neutrino observations of blazars undergoing major flaring events. These coordinated campaigns reveal shock–shock interactions in the parsec-scale jet, conditions favourable for hadronic emission, and γ-ray production occurring well downstream of the central engine. I will discuss these results in the context of our broader efforts with the Event Horizon Telescope to directly probe the physical conditions governing jet formation and high-energy radiation near supermassive black holes.