Collimation of the kiloparsec-scale radio jets in NGC 2663
Date Issued
2022
Author(s)
Velović, Velibor
•
Filipović, M. D.
•
Barnes, L.
•
Norris, R. P.
•
Tremblay, C. D.
•
Heald, G.
•
Rudnick, L.
•
Shabala, S. S.
•
Pannuti, T. G.
•
Andernach, H.
•
Titov, O.
•
Waddell, S. G. H.
•
Koribalski, B. S.
•
Grupe, D.
•
Jarrett, T.
•
Alsaberi, R. Z. E.
•
•
Collier, J. D.
•
Einecke, S.
•
Galvin, T. J.
•
Hotan, A.
•
Manojlović, P.
•
Marvil, J.
•
Nandra, K.
•
Reiprich, T. H.
•
Rowell, G.
•
Salvato, M.
•
Whiting, M.
Abstract
We present the discovery of highly collimated radio jets spanning a total of 355 kpc around the nearby elliptical galaxy NGC 2663, and the possible first detection of recollimation on kiloparsec scales. The small distance to the galaxy (~28.5 Mpc) allows us to resolve portions of the jets to examine their structure. We combine multiwavelength data: radio observations by the Murchison Widefield Array (MWA), the Australian Square Kilometre Array Pathfinder (ASKAP) and the Australia Telescope Compact Array (ATCA), and X-ray data from Chandra, Swift, and SRG/eROSITA. We present intensity, rotation measure, polarization, spectral index, and X-ray environment maps. Regions of the southern jet show simultaneous narrowing and brightening, which can be interpreted as a signature of the recollimation of the jet by external, environmental pressure, though it is also consistent with intermittent active galactic nuclei or complex internal jet structure. X-ray data suggest that the environment is extremely poor; if the jet is indeed recollimating, the large recollimation scale (40 kpc) is consistent with a slow jet in a low-density environment.
Volume
516
Issue
2
Start page
1865
Issn Identifier
0035-8711
Ads BibCode
2022MNRAS.516.1865V
Rights
open.access
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