ICRF

Oleg Titov and Feng-Chun Shu Visit Our Group
Oleg Titov and Feng-Chun Shu visit our group for academic discussions, with presentations on future improvements to the ICRF and the OCCAM VLBI analysis software.
Sep 6, 2024 — Sep 7, 2024 Nanjing University
Oleg Titov and Feng-Chun Shu Visit Our Group
Evaluation of the ICRF stability from a position time series analysis
Source position time series constrain the global spin and yearly orientation stability of the ICRF3 axes.
PDF Cite Project DOI
Evaluation of the ICRF stability from a position time series analysis
Comparison of multifrequency positions of extragalactic sources from ICRF3 and Gaia EDR3
Comparison of ICRF3 and Gaia EDR3 positions and the influence of radio source structure.
PDF Cite Project DOI
Comparison of multifrequency positions of extragalactic sources from ICRF3 and Gaia EDR3
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.
PDF Cite Project DOI
Systematics and accuracy of VLBI astrometry: A comparison with Gaia Data Release 2