The nuclei of most normal galaxies contain supermassive black holes, which can accrete
gas through a disk and become active. These active galactic nuclei (AGNs) can form jets that …

We review current understanding of the population of radio galaxies and radio-loud quasars
from an observational perspective, focusing on their large-scale structures and dynamics …

First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
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We present the first Event Horizon Telescope (EHT) images of M87, using observations from
April 2017 at 1.3 mm wavelength. These images show a prominent ring with a diameter of …

We analyze the parsec-scale jet kinematics from 2007 June to 2018 December of a sample
of γ-ray bright blazars monitored roughly monthly with the Very Long Baseline Array (VLBA) …

We analyze the parsec-scale jet kinematics from 2007 June to 2013 January of a sample of
γ-ray bright blazars monitored roughly monthly with the Very Long Baseline Array at 43 GHz …

Gas falling into a black hole (BH) from large distances is unaware of BH spin direction, and
misalignment between the accretion disc and BH spin is expected to be common. However …

We have analyzed the parsec-scale jet kinematics of 447 bright radio-loud active active
galactic nuclei (AGN), based on 15 GHz Very Long Baseline Array (VLBA) data obtained …

We present 5321 mas-resolution total intensity and linear polarization maps of 437 active
galactic nuclei (AGNs) obtained with the VLBA at 15 GHz as part of the MOJAVE survey, and …

We present results from a parsec-scale jet kinematics study of 409 bright radio-loud active
galactic nuclei (AGNs) based on 15 GHz Very Long Baseline Array (VLBA) data obtained …