Radio continuum emission maps. Left panel: map of the 1.3 mm continuum emission at ∼0.2 arcsec resolution with a cut-out at 2σ. Contours are drawn at (2, 3, 6, 15, 60)σ, σ = 0.02 mJy beam⁻¹. Central panel: ALMA map of the 1.3 mm continuum seen at ∼0.6 arcsec resolution with a cut-out at 1σ, σ = 0.05 mJy beam⁻¹. Compared to the left panel, in this map both the nuclear emission and the dusty disc are detected. Contours as in left panel. Right panel: VLA 6 cm map of radio continuum. Contours are drawn at (1, 2, 3, 5, 8, 20, 50, 100)σ, σ = 0.14 mJy beam⁻¹. The grey ellipses show the ALMA beam in the left and middle panels and the VLA beam in the right panel.