Speaker
Description
X-ray polarimetry has opened a new window on the physics of active galactic nuclei, providing direct information on geometry, magnetic fields, scattering regions, and the particle acceleration and emission processes operating in relativistic jets that cannot be obtained from spectroscopy, timing, or imaging alone. In this talk, I will review the emerging observational picture from recent X-ray polarization measurements with the Imaging X-ray Polarimetry Explorer (IXPE), highlighting what they reveal about accretion flows, coronae, relativistic jets, and the connection between disk and jet emission. I will also discuss how X-ray polarimetry complements multi-wavelength and multi-messenger studies, and how future observations can help distinguish between competing physical scenarios for high-energy emission in active galaxies.