J/MNRAS/474/4056 Cen A MWA 154MHz image (McKinley+, 2018) ================================================================================ 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. =2018MNRAS.474.4056M (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Galaxies, radio Keywords: galaxies: active - galaxies: individual: NGC 5128 - radio continuum: galaxies 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 ~5kpc (~5-arcmin) scales of the northern inner lobe (NIL) to the ~30kpc (~30-arcmin) scales of the northern middle lobe (NML). Our Murchison Widefield Array observations at 154MHz and our Parkes radio telescope observations at 2.3GHz show diffuse radio emission connecting the NIL to the NML, in agreement with previous Australia Telescope Compact Array observations at 1.4GHz. 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. Description: The observations of Cen A used in this paper were undertaken as part of the Galactic and Extragalactic All-sky MWA (GLEAM) survey (Wayth et al., 2015PASA...32...25W; Hurley-Walker et al., 2017MNRAS.464.1146H, Cat. VIII/100) on 2014 June 10. Objects: -------------------------------------------- RA (2000) DE Designation(s) -------------------------------------------- 13 25 27.60 -43 01 09.5 Cen A = NGC 5128 -------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file list.dat 153 1 Information on fits image fits/* . 1 FITS image -------------------------------------------------------------------------------- See also: J/other/NatAs/6.109 : Centaurus A (NGC 5128) 185MHz MWA image (McKinley+, 2022) Byte-by-byte Description of file: list.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 9 F9.5 deg RAdeg Right Ascension of center (J2000) 10- 18 F9.5 deg DEdeg Declination of center (J2000) 20- 23 I4 --- Nx Number of pixels along X-axis 25- 28 I4 --- Ny Number of pixels along Y-axis 30- 50 A21 "datime" Obs.date Observation date 52- 58 F7.3 MHz Freq Observed frequency 60- 63 I4 Kibyte size Size of FITS file 65-119 A55 --- FileName Name of FITS file, in subdirectory fits 121-153 A33 --- Title Title of the FITS file -------------------------------------------------------------------------------- Acknowledgements: Ben McKinley, ben.mckinley(at)curtin.edu.au ================================================================================ (End) Patricia Vannier [CDS] 07-Feb-2022