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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28679
Title: The jet/wind outflow in Centaurus A: a local laboratory for AGN feedback
Authors: McKinley, B.
Tingay, S. J.
CARRETTI, ETTORE 
Ellis, S.
Bland-Hawthorn, J.
Morganti, R.
Line, J.
McDonald, M.
Veilleux, S.
Wahl Olsen, R.
Sidonio, M.
Ekers, R.
Offringa, A. R.
Procopio, P.
Pindor, B.
Wayth, R. B.
Hurley-Walker, N.
BERNARDI, GIANNI 
Gaensler, B. M.
Haverkorn, M.
Kesteven, M.
POPPI, Sergio 
Staveley-Smith, L.
Issue Date: 2018
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 474
Issue: 3
First Page: 4056
Abstract: We present new radio and optical images of the nearest radio galaxy Centaurus A and its host galaxy NGC 5128. We focus our investigation on the northern transition region, where energy is transported from the ∼5 kpc (∼5 arcmin) scales of the northern inner lobe (NIL) to the ∼30 kpc (∼30 arcmin) scales of the northern middle lobe (NML). Our Murchison Widefield Array observations at 154 MHz and our Parkes radio telescope observations at 2.3 GHz show diffuse radio emission connecting the NIL to the NML, in agreement with previous Australia Telescope Compact Array observations at 1.4 GHz. Comparison of these radio data with our wide-field optical emission-line images show the relationship between the NML radio emission and the ionized filaments that extend north from the NIL, and reveal a new ionized filament to the east, possibly associated with a galactic wind. Our deep optical images show clear evidence for a bipolar outflow from the central galaxy extending to intermediate scales, despite the non-detection of a southern radio counterpart to the NML. Thus, our observational overview of Centaurus A reveals a number of features proposed to be associated with active galactic nucleus feedback mechanisms, often cited as likely to have significant effects in galaxy evolution models. As one of the closest galaxies to us, Centaurus A therefore provides a unique laboratory to examine feedback mechanisms in detail.
URI: http://hdl.handle.net/20.500.12386/28679
URL: https://academic.oup.com/mnras/article/474/3/4056/4609363
ISSN: 0035-8711
DOI: 10.1093/mnras/stx2890
Bibcode ADS: 2018MNRAS.474.4056M
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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