Narrow head-tail radio galaxies at very high resolution
Abstract
Aims. Narrow-angle tailed (NAT) sources in clusters of galaxies can show on the large scale very narrow tails that are unresolved even at arcsecond resolution. These sources could therefore be classified as one-sided jets. The aim of this paper is to gain new insight into the structure of these sources, and establish whether they are genuine one-sided objects, or if they are two-sided sources. Methods. We observed a sample of apparently one-sided NAT sources at subarcsecond resolution to obtain detailed information on their structure in the nuclear regions of radio galaxies. Results. Most radio galaxies are found to show two-sided jets with sharp bends, and therefore the sources are similar to the more classical NATs, which are affected by strong projection effects.
Keywords
Cite
@article{arxiv.1709.00223,
title = {Narrow head-tail radio galaxies at very high resolution},
author = {Beatrice Terni de Gregory and Luigina Feretti and Gabriele Giovannini and Federica Govoni and Matteo Murgia and Rick A. Perley and Valentina Vacca},
journal= {arXiv preprint arXiv:1709.00223},
year = {2017}
}
Comments
This is a low resolution version, because of space problems. A full resolution PDF version is available at http://www.ira.inaf.it/~lferetti/OUTGOING/paperNAT/paperNAT-hr.pdf 15 figures, accepted for the pubblication in Astronomy & Astrophysics