Astronomy and Astrophysics – Astronomy
Scientific paper
May 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.195..523b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 195, May 1981, p. 523-533.
Astronomy and Astrophysics
Astronomy
44
Astronomical Maps, Galactic Structure, Intergalactic Media, Radio Galaxies, Internal Pressure, Interstellar Gas, Polarization Characteristics
Scientific paper
New 20-cm VLA observations of the radio galaxy 1919 + 479 appear to pose some major problems for a radio-trail model of this wide-angle tailed source. The extreme length of the tails (greater than or approximately equal to 1 Mpc), the curvature of a one-sided radio jet and the nature of the galaxy (cD in a rich cluster) present strong objections to the view that this class of source is formed by motion through the intracluster medium. The length (greater than or approximately equal to 350 kpc) and curvature of the jet in this patently asymmetrical source suggest that the jet exists in an environment conducive to stability. Such an environment may be present if 'passive' mechanisms such as buoyancy or large-scale mass motions are invoked to bend the jet-tail structure.
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