VLBI Survey of Weak Extragalactic Radio Sources as a Potential Link Between the Radio and Optical Reference Frames

Details VLBI Survey of Weak Extragalactic Radio Sources as a Potential Link Between the Radio and Optical Reference Frames VLBI Survey of Weak Extragalactic Radio Sources as a Potential Link Between the Radio and Optical Reference Frames

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.576..683f&link_type=abstract

"Proceedings of the Gaia Symposium "The Three-Dimensional Universe with Gaia" (ESA SP-576). Held at the Observatoire de Paris-Me

Computer Science

1

Vlbi, Extragalactic Reference Frames, Quasars, Surveys

Scientific paper

The International Celestial Reference Frame (ICRF) is realised through a series of precise radio interferometric (Very Long Baseline Interferometry, VLBI) measurements of selected bright compact extragalactic sources. Using the technique of phase-referencing, VLBI has a potential to observe many (up to ˜ 104 ) faint radio sources, inherently relating their positions to the reference objects with ICRF coordinates known accurately. Here we briefly describe the results of a pilot project for a Deep Extragalactic VLBI-Optical Survey (DEVOS). We comment on the perspective of using such a survey for tying the radio and optical reference frames.

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