High-resolution observations of the steep spectrum source 2147+145

Details High-resolution observations of the steep spectrum source 2147+145 High-resolution observations of the steep spectrum source 2147+145

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...277l..41c&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 277, Feb. 15, 1984, p. L41-L44.

Astronomy and Astrophysics

Astronomy

15

Astronomical Maps, High Resolution, Radiant Flux Density, Radio Sources (Astronomy), Very Long Base Interferometry, Astronomical Observatories, Magnetic Fields

Scientific paper

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.

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