Kiloparsec-scale emission in the narrow-line Seyfert 1 galaxy Mrk 783

Journal
Date Issued
2017
Author(s)
Congiu, E.
•
Berton, M.
•
•
Antonucci, R.
•
•
Kharb, P.
•
Lister, M. L.
•
•
Ciroi, S.
•
Cracco, V.
•
Frezzato, M.
•
Järvelä, E.
•
•
Richards, J. L.
•
Rafanelli, P.
DOI
Abstract
We present the first results of a radio survey of 79 narrow-line Seyfert 1 (NLS1) carried out with the Karl G. Jansky Very Large Array (JVLA) at 5 GHz in A configuration aimed at studying the radio properties of these sources. We report the detection of extended emission in one object: Mrk 783. This is intriguing, since the radio-loudness parameter R of this object is close to the threshold between radio-quiet and radio-loud active galactic nuclei (AGN). The galaxy is one of the few NLS1 showing such an extended emission at z < 0.1. The radio emission is divided into a compact core component and an extended component, observed on both sides of the nucleus and extending from 14 kpc southeast to 12 kpc northwest. There is no sign of a collimated jet and the shape of the extended component is similar to those of some Seyfert galaxies. The properties of the emission are compatible with a relic produced by the intermittent activity cycle of the AGN.
Volume
603
Start page
A32
Uri
Url
Issn Identifier
0004-6361
Ads BibCode
2017A&A...603A..32C
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

aa30616-17.pdf

Size

423.15 KB

Format

Adobe PDF

Checksum (MD5)

c1d8f6f0973ef8c249a5f2634683b06b