Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229l..59o&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 229, Apr. 15, 1979, p. L59-L63.
Astronomy and Astrophysics
Astrophysics
29
Astronomical Maps, Galactic Clusters, Radio Galaxies, Astronomical Coordinates, High Resolution, Interstellar Matter, Morphology, Nonrelativistic Mechanics
Scientific paper
VLA maps of six head-tail radio sources at 4886 MHz are reported. Typical noise levels on the maps are 100-200 microjanskys, and beam sizes range from 1 to 3 arcsec. All the maps show small-scale linear structures that connect the nucleus with the larger-scale features seen at lower resolution. All of the maps suggest that energy is being supplied to the large-scale structure through some sort of continuous process, such as a 'beam.' However, the fact that several of the narrow structures are bent may suggest that nonrelativistic velocities are involved. The minimum pressures derived for the tails might be balanced by an interstellar medium in equilibrium with the intracluster ram pressure.
Burns O. Jr. J.
Greisen Eric W.
Owen Frazer N.
Rudnick Lawrence
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