The CO(2–1)/CO(1–0), line ratio (R₂₁) map for the regions where the emission is detected in both transitions. The black contour marks the entire region from which we detect CO(2–1) emission. The black contours in the centre show the 8.4 GHz radio continuum from Giroletti et al. (2005). The yellow cross shows the radio core. The white contour shows the region of soft X-ray emission detected in Chandra observations reported in (see Fig. 6, right, in Fabbiano et al. 2022).