The jet/wind outflow in Centaurus A: A local laboratory for AGN feedback
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) scale...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Oxford University Press
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/65574 |
| _version_ | 1848761159548665856 |
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| author | McKinley, B. Tingay, Steven Carretti, E. Ellis, S. Bland-Hawthorn, J. Morganti, R. Line, J. McDonald, M. Veilleux, S. Wahl Olsen, R. Sidonio, M. Ekers, Ronald Offringa, A. Procopio, P. Pindor, B. Wayth, Randall Hurley-Walker, Natasha Bernardi, G. Gaensler, B. Haverkorn, M. Kesteven, M. Poppi, S. Staveley-Smith, L. |
| author_facet | McKinley, B. Tingay, Steven Carretti, E. Ellis, S. Bland-Hawthorn, J. Morganti, R. Line, J. McDonald, M. Veilleux, S. Wahl Olsen, R. Sidonio, M. Ekers, Ronald Offringa, A. Procopio, P. Pindor, B. Wayth, Randall Hurley-Walker, Natasha Bernardi, G. Gaensler, B. Haverkorn, M. Kesteven, M. Poppi, S. Staveley-Smith, L. |
| author_sort | McKinley, B. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T10:27:14Z |
| format | Journal Article |
| id | curtin-20.500.11937-65574 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:27:14Z |
| publishDate | 2018 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-655742018-04-09T03:30:47Z The jet/wind outflow in Centaurus A: A local laboratory for AGN feedback McKinley, B. Tingay, Steven Carretti, E. Ellis, S. Bland-Hawthorn, J. Morganti, R. Line, J. McDonald, M. Veilleux, S. Wahl Olsen, R. Sidonio, M. Ekers, Ronald Offringa, A. Procopio, P. Pindor, B. Wayth, Randall Hurley-Walker, Natasha Bernardi, G. Gaensler, B. Haverkorn, M. Kesteven, M. Poppi, S. Staveley-Smith, L. 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. 2018 Journal Article http://hdl.handle.net/20.500.11937/65574 10.1093/mnras/stx2890 Oxford University Press fulltext |
| spellingShingle | McKinley, B. Tingay, Steven Carretti, E. Ellis, S. Bland-Hawthorn, J. Morganti, R. Line, J. McDonald, M. Veilleux, S. Wahl Olsen, R. Sidonio, M. Ekers, Ronald Offringa, A. Procopio, P. Pindor, B. Wayth, Randall Hurley-Walker, Natasha Bernardi, G. Gaensler, B. Haverkorn, M. Kesteven, M. Poppi, S. Staveley-Smith, L. The jet/wind outflow in Centaurus A: A local laboratory for AGN feedback |
| title | The jet/wind outflow in Centaurus A: A local laboratory for AGN feedback |
| title_full | The jet/wind outflow in Centaurus A: A local laboratory for AGN feedback |
| title_fullStr | The jet/wind outflow in Centaurus A: A local laboratory for AGN feedback |
| title_full_unstemmed | The jet/wind outflow in Centaurus A: A local laboratory for AGN feedback |
| title_short | The jet/wind outflow in Centaurus A: A local laboratory for AGN feedback |
| title_sort | jet/wind outflow in centaurus a: a local laboratory for agn feedback |
| url | http://hdl.handle.net/20.500.11937/65574 |