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High Resolution Observations of the Steep Spectrum Source 2147+145
National Radio Astronomy Observatory, Socorro, NM, USA.
National Radio Astronomy Observatory, Socorro, NM, USA.
E. O. Hulburt Center for Space Research, Washington, DC, USA.
E. O. Hulburt Center for Space Research, Washington, DC, USA.
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1984 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 277, p. L41-L44Article in journal (Refereed) Published
Abstract [en]

The results of an eight station, 18-cm intercontinental very long baseline interferometry for which the synthesized beam obtained was 0.008 x 0.003 arcsec are presented for the steep spectrum compact radio source 2147+145. These observations reveal a structure similar to flat spectrum compact sources and, if the source radiates due to the synchrotron process, a very weak magnetic field. The source consists of a line of knots 0.022 arcsec long along position angle of 38 deg dominated on one side by a component of size 0.0032 arcsec measured along a position angle of 38 deg. It is suggested that 2147+145 and, perhaps, related steep spectrum objects are similar to flat spectrum, optically active sources except that the magnetic field is much weaker.

Place, publisher, year, edition, pages
Philadelphia, PA: Institute of Physics Publishing (IOPP), 1984. Vol. 277, p. L41-L44
Keywords [en]
interferometry, radio sources: general
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:hh:diva-22786DOI: 10.1086/184198OAI: oai:DiVA.org:hh-22786DiVA, id: diva2:629823
Available from: 2013-06-17 Created: 2013-06-17 Last updated: 2017-12-06Bibliographically approved

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