"A projection through a 40 Mpc thick slice through the fiducial, intermediate-resolution simulation with box side length 2.8 Gpc (run L2p8_m9 in Table 2) at z = 0. The luminosity of the background image gives the CDM surface density whilst the colour encodes the surface density of massive neutrinos, both on a logarithmic scale (see Fig. 4 for a side-by-side comparison of images of the CDM and neutrino surface densities with colour bars for each). The insets show three consecutive zooms centred on the most massive halo (total mass ⁠[…]). First inset: a projection of a 200 × 200 × 40 Mpc3 sub-volume containing the cluster, showing the mass-weighted gas temperature along the line of sight. Second inset: CDM surface density in a 40 × 40 × 20 Mpc3 region. Final inset: X-ray surface brightness in the 0.5–2 keV band in a 20 × 20 × 20 Mpc3 region, computed from the z = 0 snapshot but placing the cluster at z = 0.025."

"First, FLAMINGO uses three different resolutions that are all calibrated to the same data. The two flagship runs use volumes of (2.8 Gpc)3 and (1 Gpc)3 and baryonic particle masses of […]

(which we will refer to as intermediate/m9 resolution) and […] (high/m8 resolution), respectively. While the former has the same resolution as BAHAMAS, its volume is more than two orders of magnitude larger. To highlight the dynamic range captured by this simulation, Fig. 1 zooms in from the full simulation box with the large-scale structure of the cosmic web to a single massive galaxy cluster and its internal structure. The colour scale of the background image encodes the density of neutrinos, while the intensity encodes the CDM density, which can clearly be seen to be modulated on smaller scales than the neutrino density. The consecutive zooms in the three insets show, respectively, the gas temperature, CDM surface density, and X-ray surface brightness."