Speaker
Description
Ever since the revolutionary discovery by the Fermi mission that active galactic nuclei (AGN)produce copious amounts of high-energy emission, its origin has remained elusive. Using high-frequency radio interferometry (VLBI) polarization imaging, we could probe the magnetic field topology of the compact high-energy emission regions in blazars. A case study for blazar 3C 279 reveals presence of multiple gamma-ray emission regions. The observed anti-correlation between gamma-ray flux and percentage polarization at optical bands challenges the current high-energy emission models. High-energy polarization observations will be crucial in better understanding the high-energy dissipation mechanisms. I will briefly describe the polarization capabilities of the AMEGO (All-sky Medium Energy Gamma-ray Observatory) mission.
