Coronal model results combined with the shock reconstruction and radio emission locations from two perspectives: Earth (left) and SolO (right). Panels a and b: Photospheric magnetogram overlaid with MAST open (black) and closed magnetic field lines (orange), the shock reconstruction at 11:25 UT observation time at Earth (magenta wiremesh) and centroids of type II and herringbone radio sources (coloured spheres). The red open field lines are example of field lines connecting to STEREO-A. Panels c and d: Photospheric magnetogram overlaid with the same features as in panels a–b, except that the shock reconstruction is overlaid with values of θ_BN. Panels e and f: Density isosurface overlaid with values of Alfvén speed (v_A) obtained from the MAST model. Overlaid on the isosurface: open (black) and closed magnetic field lines (orange), the shock reconstruction at 11:25 UT (magenta wiremesh), and centroids of type II and herringbone radio sources (coloured spheres). The grey areas represent a sphere surface at 1.2 R_⊙ to give a visual indication of the height of the density isosurface. Panels g and h: Density isosurface overlaid with values of the fast magnetosonic speed (v_FMS) obtained from the MAST model. Overlaid on the isosurface are the same features as in panels e–f. For different viewpoints, please see the HTML file accompanying this paper.