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1404+286 : A non-ideal calibrator for VLBI observations
-
- Zhang, F. J. (author)
- Nuffield Radio Astronomy Laboratories, University of Manchester, Cheshire, UK
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- Bååth, L.B. 1948- (author)
- Onsala Space Observatory, Chalmers University of Technology, Gothenburg, Sweden
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- Spencer, R. E. (author)
- Nuffield Radio Astronomy Laboratories, University of Manchester, Cheshire, UK
- (creator_code:org_t)
- Les Ulis : EDP Sciences, 1994
- 1994
- English.
- In: Astronomy and Astrophysics. - Les Ulis : EDP Sciences. - 0004-6361 .- 1432-0746. ; 281:3, s. 649-652
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The radio source 1404+286 was observed with global VLBI arrays at 5 and 1.67 GHz in 1990.88 and 1991.45 respectively. High quality maps are presented in this paper, and show the source to be resolved at both frequencies with a core-jet like structure extending approximately 6 mas in position angle approximately -145-degrees. The jet direction is similar in both maps. 1404+286 has often been used in the past as a flux density calibrator or a phase referencing source. Our results show that this source is not an ideal calibrator on VLBI scales.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Active Galactic Nuclei
- Radio Astronomy
- Radio Jets (Astronomy)
- Seyfert Galaxies
- Astronomical Maps
- Calibrating
- Flux Density
- Very Long Base Interferometry
Publication and Content Type
- ref (subject category)
- art (subject category)
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