308 citations · 857 across the 37 of their papers we have counts for
37 papers
On More than Two Decades of Celestial Reference Frame VLBI Observations in the Deep South: IVS-CRDS (1995-2021)
S. Weston, A. de Witt, Hana Krasna +13
The International VLBI Service for Geodesy & Astrometry (IVS) regularly provides high-quality data to produce Earth Orientation Parameters (EOP), and for the maintenance and realiz…
Astrometric Apparent Motion of High-redshift Radio Sources
Oleg Titov, Sandor Frey, Alexei Melnikov +10
Radio-loud quasars at high redshift (z > 4) are rare objects in the Universe and rarely observed with Very Long Baseline Interferometry (VLBI). But some of them have flux density s…
J2102+6015: a potential distant multimessenger?
Leonid I. Gurvits, Sándor Frey, Máté Krezinger +7
We present and briefly discuss results of several studies of the source J2102+6015 with tentatively defined redshift z=4:575 which demonstrates unusual properties in imaging and as…
Collimation of the kiloparsec-scale radio jets in NGC 2663
Velibor Velović, M. D. Filipović, L. Barnes +25
We present the discovery of highly-collimated radio jets spanning a total of 355 kpc around the nearby elliptical galaxy NGC 2663, and the possible first detection of recollimation…
Unprecedented change in the position of four radio sources
Oleg Titov, Sándor Frey, Sébastien Lambert +7
Astrometric positions of radio-emitting active galactic nuclei (AGNs) can be determined with sub-milliarcsec accuracy using very long baseline interferometry (VLBI). The usually sm…
J2102+6015: a young radio source at z = 4.575
Yingkang Zhang, Tao An, Sándor Frey +7
Jets of high-redshift active galactic nuclei (AGNs) can be used to directly probe the activity of the black holes in the early Universe. Radio sources with jets misaligned with res…