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1404+286: A non-ideal calibrator for VLBI observations
Nuffield Radio Astronomy Laboratories, University of Manchester, Cheshire, UK.
Onsala Space Observatory, Chalmers University of Technology, Gothenburg, Sweden.ORCID iD: 0000-0002-4826-019X
Nuffield Radio Astronomy Laboratories, University of Manchester, Cheshire, UK.
1994 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 281, no 3, 649-652 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Les Ulis: EDP Sciences, 1994. Vol. 281, no 3, 649-652 p.
Keyword [en]
Active Galactic Nuclei, Radio Astronomy, Radio Jets (Astronomy), Seyfert Galaxies, Astronomical Maps, Calibrating, Flux Density, Very Long Base Interferometry
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:hh:diva-22857ISI: A1994MT44600007OAI: oai:DiVA.org:hh-22857DiVA: diva2:629886
Available from: 2013-06-17 Created: 2013-06-17 Last updated: 2015-06-02Bibliographically approved

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