Speaker
Description
"I summarize three ALMA studies investigating jet and coronal activities in Seyfert galaxies.
NGC 1068 Jet: High-resolution ALMA observations reveal parsec-scale blobs in the jet of NGC 1068, with a magnetic field of ≈240 μG. These findings suggest cosmic-ray amplification and significant galactic impact even from modest-power jets.
NGC 1068 Core Spectrum: Broad-band data from 5–700 GHz, including new ALMA results, indicate a combination of emission from the jet base, dusty torus, and compact corona. Updated models suggest a strong magnetic field near the black hole, but higher-resolution data are needed to confirm.
GRS 1734-292 Variability: ALMA detected millimeter excess and time variability in the central ≲100 pc of this radio-quiet galaxy. The findings suggest synchrotron emission from a compact corona or disk winds, with future high-resolution observations required to differentiate these scenarios."
