Citation
Abstract
The Deep Space Network is establishing a high-accuracy VLBI celestial reference frame, This article presents VLBI results of observations of 416 radio sources with declinations north of -45 deg which have been conducted at frequencies of 2.3 GHz and 8.4 GHz. At 2.3 GHz, 323 of 391 radio sources observed were detected with a fringe spacing of 3 milliarcsec and a detection limit of ~0.1 Jy. At 8.4 GHz, 278 of 416 radio sources were detected with a fringe spacing of 1 milliarcsec and a detection limit of ~0.1 Jy. This survey was conducted primarily to determine the strength of compact components at 8.4 GHz for radio sources previously detected with VLBI at 2.3 GHz. Compact extragalactic radio sources with strong correlated flux densities at both frequencies are used to form a high-accuracy reference frame.
Details
- Volume
- 42-85
- Published
- May 15, 1986
- Pages
- 69–84
- File Size
- 910.6 KB