The jet/wind outflow in Centaurus A: A local laboratory for AGN feedback

B. McKinley, S. J. Tingay, E. Carretti, S. Ellis, J. Bland-Hawthorn, R. Morganti, J. Line, M. McDonald, S. Veilleux, R. Wahl Olsen, M. Sidonio, R. Ekers, A. R. Offringa, P. Procopio, B. Pindor, R. B. Wayth, N. Hurley-Walker, G. Bernardi, B. M. Gaensler, M. Haverkorn & 3 others M. Kesteven, S. Poppi, L. Staveley-Smith

Research output: Contribution to journalArticleResearchpeer-review

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.

LanguageEnglish
Pages4056-4072
Number of pages17
JournalMonthly Notices of the Royal Astronomical Society
Volume474
Issue number3
DOIs
Publication statusPublished - 1 Mar 2018
Externally publishedYes

Fingerprint

lobes
outflow
radio
galaxies
feedback mechanism
radio emission
filaments
galactic winds
radio telescopes
radio galaxies
laboratory
active galactic nuclei
light emission
field emission
telescopes
energy

Keywords

  • Galaxies: active
  • Galaxies: individual: NGC 5128
  • Radio continuum: galaxies

Cite this

McKinley, B., Tingay, S. J., Carretti, E., Ellis, S., Bland-Hawthorn, J., Morganti, R., ... Staveley-Smith, L. (2018). The jet/wind outflow in Centaurus A: A local laboratory for AGN feedback. Monthly Notices of the Royal Astronomical Society, 474(3), 4056-4072. https://doi.org/10.1093/mnras/stx2890
McKinley, B. ; Tingay, S. J. ; Carretti, E. ; 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, G. ; Gaensler, B. M. ; Haverkorn, M. ; Kesteven, M. ; Poppi, S. ; Staveley-Smith, L. / The jet/wind outflow in Centaurus A : A local laboratory for AGN feedback. In: Monthly Notices of the Royal Astronomical Society. 2018 ; Vol. 474, No. 3. pp. 4056-4072.
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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.",
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author = "B. McKinley and Tingay, {S. J.} and E. Carretti and S. Ellis and J. Bland-Hawthorn and R. Morganti and J. Line and M. McDonald and S. Veilleux and {Wahl Olsen}, R. and M. Sidonio and R. Ekers and Offringa, {A. R.} and P. Procopio and B. Pindor and Wayth, {R. B.} and N. Hurley-Walker and G. Bernardi and Gaensler, {B. M.} and M. Haverkorn and M. Kesteven and S. Poppi and L. Staveley-Smith",
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McKinley, B, Tingay, SJ, Carretti, E, Ellis, S, Bland-Hawthorn, J, Morganti, R, Line, J, McDonald, M, Veilleux, S, Wahl Olsen, R, Sidonio, M, Ekers, R, Offringa, AR, Procopio, P, Pindor, B, Wayth, RB, Hurley-Walker, N, Bernardi, G, Gaensler, BM, Haverkorn, M, Kesteven, M, Poppi, S & Staveley-Smith, L 2018, 'The jet/wind outflow in Centaurus A: A local laboratory for AGN feedback' Monthly Notices of the Royal Astronomical Society, vol. 474, no. 3, pp. 4056-4072. https://doi.org/10.1093/mnras/stx2890

The jet/wind outflow in Centaurus A : A local laboratory for AGN feedback. / McKinley, B.; Tingay, S. J.; Carretti, E.; 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, G.; Gaensler, B. M.; Haverkorn, M.; Kesteven, M.; Poppi, S.; Staveley-Smith, L.

In: Monthly Notices of the Royal Astronomical Society, Vol. 474, No. 3, 01.03.2018, p. 4056-4072.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - The jet/wind outflow in Centaurus A

T2 - Monthly Notices of the Royal Astronomical Society

AU - McKinley,B.

AU - Tingay,S. J.

AU - Carretti,E.

AU - Ellis,S.

AU - Bland-Hawthorn,J.

AU - Morganti,R.

AU - Line,J.

AU - McDonald,M.

AU - Veilleux,S.

AU - Wahl Olsen,R.

AU - Sidonio,M.

AU - Ekers,R.

AU - Offringa,A. R.

AU - Procopio,P.

AU - Pindor,B.

AU - Wayth,R. B.

AU - Hurley-Walker,N.

AU - Bernardi,G.

AU - Gaensler,B. M.

AU - Haverkorn,M.

AU - Kesteven,M.

AU - Poppi,S.

AU - Staveley-Smith,L.

PY - 2018/3/1

Y1 - 2018/3/1

N2 - 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.

AB - 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.

KW - Galaxies: active

KW - Galaxies: individual: NGC 5128

KW - Radio continuum: galaxies

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