154 citations · 1.2k across the 14 of their papers we have counts for
11 papers
The Radio Fundamental Catalogue. I. Astrometry
Leonid Petrov, Yuri Y. Kovalev
We present an all-sky catalog of absolute positions and estimates of correlated flux density of 21,942 compact radio sources determined from processing interferometric visibility d…
Parsec-scale properties of steep and flat spectrum extragalactic radio sources from a VLBA survey of a complete north polar cap sample
Alexander V. Popkov, Yuri Y. Kovalev, Leonid Y. Petrov +1
We observed with the VLBA at 2.3 and 8.6 GHz a complete flux-density limited sample of 482 radio sources with declination >+75 degrees brighter than 200 mJy at 1.4 GHz drawn from t…
A quantitative analysis of systematic differences in positions and proper motions of Gaia DR2 with respect to VLBI
L. Petrov, Y. Y. Kovalev, A. V. Plavin
We have analyzed the differences in positions of 9081 matched sources between the Gaia DR2 and VLBI catalogues. The median position uncertainty of matched sources in the VLBI catal…
On significance of VLBI/Gaia position offsets
L. Petrov, Y. Y. Kovalev
We have cross matched the Gaia Data Release 1 secondary dataset that contains positions of 1.14 billion objects against the most complete to date catalogue of VLBI positions of 11.…
A Nearly Naked Supermassive Black Hole
J. J. Condon, Jeremy Darling, Y. Y. Kovalev +1
During a systematic search for supermassive black holes (SMBHs) not in galactic nuclei, we identified the compact symmetric radio source B3 1715+425 with an emission-line galaxy of…
New Associations of Gamma-Ray Sources from the Fermi Second Source Catalog
Frank K. Schinzel, Leonid Petrov, Gregory B. Taylor +3
We present the results of an all-sky radio survey between 5 and 9 GHz of the fields surrounding all unassociated gamma-ray objects listed in the Fermi Large Area Telescope Second S…