Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aj.....84.1683b&link_type=abstract
Astronomical Journal, vol. 84, Nov. 1979, p. 1683-1693.
Astronomy and Astrophysics
Astronomy
63
Astronomical Models, Galactic Structure, Radio Astronomy, Radio Galaxies, Radio Interferometers, Spectrum Analysis, Asymmetry, Galactic Nuclei, Gauss Equation, High Resolution, Relativistic Plasmas, Spectral Resolution, Very Long Base Interferometry
Scientific paper
The paper reports observations of the wide-angle tailed radio galaxy 1159 + 583 performed with the NRAO three-element interferometer and the VLA. These observations range in resolution from approximately 7 arcsec to 1 arcsec, illustrating a variety of scale sizes in the structure. A nuclear component with a relatively steep spectrum appears on the VLA map, and the radio tail which extends to the south of the nuclear source has several unusual features, including a peculiar thin jet which extends out of a hot spot and away from the galaxy. This unusual morphology suggests some degree of asymmetry or unsteadiness in the rate and strength of the ejecta. From energetic and dynamic considerations, a plasma beam is most applicable for the major features seen on the radio maps.
Burns O. Jr. J.
Owen Frazer N.
Rudnick Lawrence
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