Influence of the early VLBI observations on the ICRF stability

Details Influence of the early VLBI observations on the ICRF stability Influence of the early VLBI observations on the ICRF stability

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jsrs.meet...39s&link_type=abstract

In: Journées 2004 - systèmes de référence spatio-temporels. Fundamental astronomy: new concepts and models for high accuracy obs

Astronomy and Astrophysics

Astronomy

1

International Celestial Reference Frame, Vlbi Observations

Scientific paper

We studied the cumulative effect of the early VLBI observations (before 1990 year) on the CRF solution stability. Three CRF solutions on different time intervals have been obtained using the Occam6.0 software. All sources were treated as global parameters. Calculation of the estimated coordinate differences between the individual solutions provides a criteria for detection of the highly unstable sources. Several sources with high visible motions are detected.

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