Highlights

Ordered magnetic fields around the 3C 84 central black hole

The persistent shadow of the supermassive black hole of M 87. I. Observations, calibration, imaging, and analysis

The first image of the accretion flow and jet surrounding the black hole shadow in M87

Filamentary structures as the origin of blazar jet radio variability

Precessing jet nozzle connecting to a spinning black hole in M87

The first space-VLBI imaging of M87
at 22 GHz by RadioAstron

The first direct image of the galactic center supermassive black hole Sgr A*

The first image of the black hole shadow in M87*

The jet launching region in M87 imaged at 7 Schwarzschild radii spatial resolution

Multi-band study of radio-gamma ray connection in 3C 84

Imaging the jet launching and collimation region in Centaurus A

The sharpest image of the gamma-ray emitting AGN 3C 279

Pinpointing the black hole in the jet base of radio galaxy 3C 84 

Detection of millimeter-wave linear polarization in the nuclear region of 3C 84

Two-decades monitoring of jet kinematics and gamma-ray emission in AGN 3C 84

Decade-long study of 3C 279 from gamma-ray to radio wavelengths