VLBI

Parsec-scale alignments of radio–optical offsets with jets in AGNs from multifrequency geodetic VLBI, Gaia EDR3, and the MOJAVE program
Multiwavelength VLBI–Gaia astrometry reveals alignments between radio–optical offsets and parsec-scale AGN jets, consistent with a core–jet scenario.
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Parsec-scale alignments of radio–optical offsets with jets in AGNs from multifrequency geodetic VLBI, Gaia EDR3, and the MOJAVE program
Is there an interest in bringing Gaia-CRF into VLBI data reduction?
An exploratory study of using Gaia-CRF2 in VLBI data reduction examines how celestial-frame constraints affect source positions, Earth orientation parameters, and the terrestrial reference frame.
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Is there an interest in bringing Gaia-CRF into VLBI data reduction?
Systematics and accuracy of VLBI astrometry: A comparison with Gaia Data Release 2
ICRF3 vs Gaia DR2: S/X agrees at ~30 μas globally; K and X/Ka show zonal systematics, notably a >200 μas Z-glide in X/Ka.
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Systematics and accuracy of VLBI astrometry: A comparison with Gaia Data Release 2