The upper row shows the observed radio continuum emission of ORCs; from left to right: MeerKAT image of ORC 1 (Norris et al. 2022), GMRT image of ORC 4 (Norris et al. 2021a), ASKAP images of ORC 5 (Koribalski et al. 2021), and a newly discovered double ORC (B. S. Koribalski et al. 2023, in preparation). Each panel has a size of ≈1 Mpc × 1 Mpc. The lower rows show 3D views of the shock structure under different viewing angles and at different times. We show the shocked SPH particles with ﹩{{ \mathcal M }}_{s}\gt 1.5﹩ color coded according to their sonic Mach numbers. Time and viewing angle have been chosen to highlight morphological similarities between the structures of the internal shocks and the observed radio images. The 3D plots for interactively rotating the shock structures can be found on the Magneticum Pathfinder simulation website (http://www.magneticum.org/complements.html#Compass) and in the online journal. In the interactive view the two panels are arranged vertically (top panel is z = 0.41; bottom panel z = 0.52), and each panel can be individually panned, zoomed, and inspected.

An interactive version of this figure is available in the online journal.