High Resolution Observations of the Steep Spectrum Source 2147+145Show others and affiliations
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
2013-06-172013-06-172020-02-28Bibliographically approved