15 citations · 30 across the 3 of their papers we have counts for
3 papers
astro-ph.IM2021★ 11 cited
Comparison of multifrequency positions of extragalactic sources from global geodetic VLBI monitoring program and Gaia EDR3
Niu Liu, Sebastien Lambert, Patrick Charlot +5
We extend previous works by considering two additional radio frequencies (K band and X/Ka band) with the aim to study the frequency dependence of the source positions and its poten…
astro-ph.IM2019★ 15 cited
Systematics and accuracy of VLBI astrometry: What can be learned from a comparison with Gaia Data Release 2
Niu Liu, Sebastien Lambert, Zi Zhu +1
We aim to investigate the overall properties of the ICRF3 with the help of the Gaia Data release 2 (Gaia DR2). This could serve as an external check of the quality of the ICRF3. Th…
physics.geo-ph2019★ 4 cited
Analyses of celestial pole offsets with VLBI, LLR, and optical observations
Yu-Ting Cheng, Jia-Cheng Liu, Zi Zhu
This work aims to explore the possibilities of determining the long-period part of the precession-nutation of the Earth with techniques other than very long baseline interferometry…