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We present new radio and optical images of the nearest radio galaxy CentaurusA and its host galaxy NGC 5128. We focus our investigation on the northerntransition 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 ofthe Northern Middle Lobe (NML). Our Murchison Widefield Array observations at154 MHz and our Parkes radio telescope observations at 2.3 GHz show diffuseradio emission connecting the NIL to the NML, in agreement with previousAustralia Telescope Compact Array observations at 1.4 GHz. Comparison of theseradio data with our widefield optical emission line images show therelationship between the NML radio emission and the ionised filaments thatextend north from the NIL, and reveal a new ionised filament to the east,possibly associated with a galactic wind. Our deep optical images show clearevidence for a bipolar outflow from the central galaxy extending tointermediate scales, despite the non-detection of a southern radio counterpartto the NML. Thus, our observational overview of Centaurus A reveals a number offeatures proposed to be associated with AGN feedback mechanisms, often cited aslikely to have significant effects in galaxy evolution models. As one of theclosest galaxies to us, Centaurus A therefore provides a unique laboratory toexamine feedback mechanisms in detail.

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