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Effect of asymmetry of the radio source distribution on the apparent proper...
Information on physical characteristics of astrometric radio sources, such as magnitude and redshift, is of great importance for many astronomical studies. However, data usually... -
VLBI measurement of the secular aberration drift
Aims. While analyzing decades of very long baseline interferometry (VLBI) data, we detected the secular aberration drift of the extragalatic radio source proper motions caused... -
Recent VLBA / VERA / IVS tests of general relativity
We report on recent VLBA / VERA / IVS observational tests of General Relativity. First, we will summarize the results from the 2005 VLBA experiment that determined gamma with an... -
On the connection of the apparent proper motion and the VLBI structure of...
Many of the compact extragalactic radio sources that are used as fiducial points to define the celestial reference frame are known to have proper motions detectable with long-... -
The Second Realization of the International Celestial Reference Frame by...
We present the second realization of the International Celestial Reference Frame (ICRF2) at radio wavelengths using nearly 30 years of Very Long Baseline Interferometry...
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