Soft X-ray half-light radius as a function of 70 μm FIR radius, taken from Díaz-Santos et al. (2017). CGI data are shown in red, and CGII data in black. X-ray selected AGN and MIR selected AGN (as specified in Table 5) are plotted separately. The dashed line shows , and is not a fit to the data. Eleven systems within the whole C-GOALS sample are resolved into individual galaxies in X-rays but not at 70 μm, and are thus not plotted.