Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...250...66v&link_type=abstract
Astrophysical Journal, Part 1, vol. 250, Nov. 1, 1981, p. 66-78. Research supported by the Natural Sciences and Engineering Res
Astronomy and Astrophysics
Astrophysics
34
Astronomical Maps, Galactic Clusters, Galactic Structure, Gravitational Effects, Orbital Velocity, Radio Galaxies, Astronomical Models, Brightness Distribution, Ejecta, Luminosity, Plasma Jets, Radial Velocity
Scientific paper
VLA is used to map the head-tail radio galaxy IC 708 in the Abell 1314 cluster of galaxies with resolutions from 0.5 to 3.3 arcsec at 4.89 GHz. The data suggest that the unusual structure of the source is due to a gravitational interaction between IC 708 and IC 709, and the shape of radio trails and their variation of intensity may be due to projection effects arising from the orbital motion of IC 708. Numerical simulations of the orbital head-tail system are made, which incorporate various models of the ejecta dynamics. The most satisfactory model is found to be one with a pair of continuous supersonic jets that bend behind IC 708 under ram pressure of the intracluster medium, and the distribution of intensity and polarization over the trails of IC 708 resemble those observed in straight radio jets in several low luminosity galaxies.
Bridle Alan H.
Vallee Jacques P.
Wilson Andrew S.
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