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3 papers · 2 filters
Observational evidence for the link between the variable optical continuum and the jet of a radio-loud galaxy 3C 390.3
Tigran G. Arshakian, Andrei P. Lobanov, Vahram H. Chavushyan +2
The ``central engine'' of AGN is thought to be powered by accretion on a central nucleus believed to be a super-massive black hole. The localization and exact mechanism of the ener…
Radio Spectroscopy of Active Galactic Nuclei
A. P. Lobanov
Radio spectroscopy offers a number of tools for studying a large variety of astrophysical phenomena, ranging from stars and their environment to interstellar and intergalactic medi…
Sub-milliarcsecond Imaging of Quasars and Active Galactic Nuclei. IV. Fine Scale Structure
Y. Y. Kovalev, K. I. Kellermann, M. L. Lister +11
We have used VLBA fringe visibility data obtained at 15 GHz to examine the compact structure in 250 extragalactic radio sources. For 171 sources in our sample, more than half of th…