MIT Libraries logoDSpace@MIT

MIT
View Item 
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

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

Author(s)
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; ... Show more Show less
Thumbnail
DownloadAccepted version (9.898Mb)
Terms of use
Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/
Metadata
Show full item record
Abstract
© 2017 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. 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.
Date issued
2018
URI
https://hdl.handle.net/1721.1/134933
Department
MIT Kavli Institute for Astrophysics and Space Research
Journal
Monthly Notices of the Royal Astronomical Society
Publisher
Oxford University Press (OUP)

Collections
  • MIT Open Access Articles

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

OA StatisticsStatistics by CountryStatistics by Department
MIT Libraries
PrivacyPermissionsAccessibilityContact us
MIT
Content created by the MIT Libraries, CC BY-NC unless otherwise noted. Notify us about copyright concerns.