Narrow head-tail radio galaxies at very high resolution

Autor:	de Gregory, Beatrice Terni, Feretti, Luigina, Giovannini, Gabriele, Govoni, Federica, Murgia, Matteo, Perley, Rick A., Vacca, Valentina
Rok vydání:	2017
Předmět:	Astrophysics - Astrophysics of Galaxies Astrophysics - Cosmology and Nongalactic Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1051/0004-6361/201730878
Popis:	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. Comment: 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
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1709.00223 Zobrazit plný text záznamu View this record from Arxiv