521 citations · 10.3k across the 138 of their papers we have counts for
7 papers · 2 filters
Significant core shift variability in parsec-scale jets of active galactic nuclei
A. V. Plavin, Y. Y. Kovalev, A. B. Pushkarev +1
The apparent position of jet base (core) in radio-loud active galactic nuclei changes with frequency because of synchrotron self-absorption. Studying this `core shift` effect enabl…
Opacity, variability and kinematics of AGN jets
Alexander Kutkin, Ilya Pashchenko, Kirill Sokolovsky +3
Synchrotron self-absorption in active galactic nuclei (AGN) jets manifests itself as a time delay between flares observed at high and low radio frequencies. It is also responsible…
Global millimeter VLBI array survey of ultracompact extragalactic radio sources at 86 GHz
Dhanya G. Nair, Andrei P. Lobanov, Thomas P. Krichbaum +9
(abridged) Very long baseline interferometry (VLBI) observations at 86GHz (wavelength, mm) reach a resolution of about 50 as, probing the collimation and acceleratio…
Dissecting the AGN disk-jet system with joint VLBI-Gaia analysis
A. V. Plavin, Y. Y. Kovalev, L. Petrov
We analyze differences in positions of active galactic nuclei between Gaia data release 2 and VLBI and compare the significant VLBI-to-Gaia offsets in more than 1000 objects with t…
MOJAVE XVI: Multi-Epoch Linear Polarization Properties of Parsec-Scale AGN Jet Cores
M. A. Hodge, M. L. Lister, M. F. Aller +4
We present an analysis of the core linear polarization properties of 387 parsec-scale active galactic nuclei (AGN) jets. Using 15 GHz VLBA data, we revisit the conclusions of the f…
Effelsberg Monitoring of a Sample of RadioAstron Blazars: Analysis of Intra-Day Variability
Jun Liu, Hayley Bignall, Thomas P. Krichbaum +6
We present the first results of an ongoing intra-day variability (IDV) flux density monitoring program of 107 blazars, which were selected from a sample of RadioAstron space very l…
A wide and collimated radio jet in 3C 84 on the scale of a few hundred gravitational radii
G. Giovannini, T. Savolainen, M. Orienti +22
Understanding the launching, acceleration, and collimation of jets powered by active galactic nuclei remains an outstanding problem in relativistic astrophysics. This is partly bec…