1404+286: A non-ideal calibrator for VLBI observations

Zhang, F. J.Nuffield Radio Astronomy Laboratories, University of Manchester, Cheshire, UK (författare)

1404+286 : A non-ideal calibrator for VLBI observations

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.

NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
Active Galactic Nuclei
Radio Astronomy
Radio Jets (Astronomy)
Seyfert Galaxies
Astronomical Maps
Calibrating
Flux Density
Very Long Base Interferometry

Bååth, L.B.1948-Onsala Space Observatory, Chalmers University of Technology, Gothenburg, Sweden(Swepub:hh)baath (författare)
Spencer, R. E.Nuffield Radio Astronomy Laboratories, University of Manchester, Cheshire, UK (författare)
Nuffield Radio Astronomy Laboratories, University of Manchester, Cheshire, UKOnsala Space Observatory, Chalmers University of Technology, Gothenburg, Sweden (creator_code:org_t)

Ingår i:Astronomy and AstrophysicsLes Ulis : EDP Sciences281:3, s. 649-6520004-63611432-0746

Av författaren/redakt...: Zhang, F. J.; Bååth, L.B. 1948 ...; Spencer, R. E.

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