Restarting activity in the giant radio galaxy J1835+620
Abstract
We present radio and optical observations of the peculiar radio galaxy J1835+620, a member of a new sample of large angular size radio galaxies selected from the NRAO VLA Sky Survey. Its optical counterpart is in a group of at least three galaxies and shows strong, narrow emission lines which allow us to measure its redshift as z=0.518. The derived cosmological distance places J1835+620 among the giant radio galaxies. The outstanding aspect of J1835+620 at radio wavelengths is the existence of two symmetric bright components within a typical Fanaroff-Riley type II structure. We interpret the source as the result of two distinct phases of core activity. Radio maps and radio polarization properties are consistent with a dense new ejection evolving through an older underlying jet. We suggest that interaction with nearby galaxies could be the reason for restarting the activity in J1835+620.
Keywords
Cite
@article{arxiv.astro-ph/9906287,
title = {Restarting activity in the giant radio galaxy J1835+620},
author = {L. Lara and I. Marquez and W. D. Cotton and L. Feretti and G. Giovannini and J. M. Marcaide and T. Venturi},
journal= {arXiv preprint arXiv:astro-ph/9906287},
year = {2007}
}
Comments
7 pages, 3 figures. To appear in Astronomy & Astrophysics, Main Journal