Astronomy and Astrophysics – Astronomy
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002newar..46..421j&link_type=abstract
New Astronomy Reviews, Volume 46, Issue 2-7, p. 421-425.
Astronomy and Astrophysics
Astronomy
1
Scientific paper
We study the collimation of radio jets in the high-luminosity Fanaroff-Riley class II sources by examining the dependence of the sizes of hotspots and knots in the radio jets on the overall size of the objects for a sample of compact steep-spectrum or CSS and larger-sized objects. The objects span a wide range in overall size from about 50 pc to 1 Mpc. The mean size of the hotspots increases with the source size during the CSS phase, which is typically taken to be about 20 kpc, and the relationship flattens for the larger sources. The hotspot size ratio - separation ratio diagram suggests that the very asymmetric CSS objects evolve in an asymmetric environment. We also suggest that some sources, especially of lower luminosity, exhibit an asymmetry in the collimation of the oppositely-directed radio jets.
Jeyakumar Solai
Saikia D. J.
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