Projected X-ray surface brightness in the [5–7] keV energy range for our simulated cluster (top left), average X-ray weighted gas temperature (lower left), average gas velocity along the LOS, either using a volume-weighting procedure (top centre) or an X-ray emissivity weighting along the LOS, within pixels of 90 × 90 kpc² to mimic XRISM’s field of view for Coma (bottom centre). Gas velocity dispersion along the LOS, again either using a volume-weighting procedure (top right) or an X-ray emissivity weighting along the LOS, for 90 × 90 kpc² pixels (bottom right). The black squares refer to the regions used to produce the line emission profiles given in Fig. 3.