Three-colour composite, multi-wavelength view of the central region in NGC253. Blue, red, and green show the X-ray emission from Lopez et al. (2023), optical [NII] data from Cronin et al. in prep., and CO(3-2) emission from Leroy et al. (2018), respectively. The B field lines and the emission of Stokes I flux of our ALMA Band 4 data are also shown as white vectors and yellow contours, respectively. The vectors are displayed every two pixels and only where PI/σ_PI > 3. The grey contours correspond to [5, 7, 10, 30, 100]×σ_I. The white rectangle marks the region shown on the upper panel of Fig. 9.