Temperature of the gas in the OF1 (left; black region corresponds to T <  10⁴ K) and OF2 (right; black region corresponds to T <  10⁶ K) zones in a planar cross-section of size (24 Mpc)² ≈ (8.5r₂₀₀)², crossing through the cluster centre. We note that the temperature scale is different for the two panels, in order to maintain the details in the two regions with very different properties. The white diamonds labelled Sh1–Sh3 mark the locations of heating events (possibly shocks) in gas outside filaments, for referencing in the text. The shaded area in the middle of the right panel shows the virial boundary of the cluster.