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High Resolution Observations of the QSO 3C 345 at 1.3 centimeters
Onsala Space Observatory, Chalmers University of Technology, Gothenburg, Sweden.ORCID iD: 0000-0002-4826-019X
Onsala Space Observatory, Chalmers University of Technology, Gothenburg, Sweden.
Max-Planck-Institut für Radioastronomie, Bonn, Germany.
Max-Planck-Institut für Radioastronomie, Bonn, Germany.
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1981 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 243, p. L123-L126Article in journal (Refereed) Published
Abstract [en]

High-resolution VLBI observations made at a frequency of 22.235 GHz of the quasar 3C 345 are discussed. Antennas located at the Crimean Astrophysical Observatory, USSR; Onsala, Sweden; Effelsberg, West Germany; and the Haystack Observatory, Massachusetts were employed at 4-min integration times to provide baselines ranging up to 5.5 x 10 to the 8th wavelengths. About 40% of the total flux density of 7.85 Jy, observed in November 1977, and 8.05 Jy, observed in October 1978, is found to originate in an unresolved component of the quasar core in a region less than 0.1 milliarcsec in diameter. The elongated jet-like component of the quasar is observed to contain several peaks of emission extending up to 6 milliarsec from the core which decreased in extent between the two observations.

Place, publisher, year, edition, pages
Philadelphia, PA: Institute of Physics Publishing (IOPP), 1981. Vol. 243, p. L123-L126
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:hh:diva-22776DOI: 10.1086/183457OAI: oai:DiVA.org:hh-22776DiVA, id: diva2:629807
Available from: 2013-06-17 Created: 2013-06-17 Last updated: 2017-12-06Bibliographically approved

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