Upper and middle panels: X-ray surface brightness distribution of the runs R60V1000P3000 and R60V500P2000 at |$t=-0.5{\rm \, Gyr}$|⁠. The white contours show the distribution of the mass surface density. The black dashed curves reveal the trajectory of the infalling subcluster. Lower panel: profiles of the X-ray surface brightness and X-ray emission weighted temperature (for R60V500P2000) along the line connecting the centres of the two merging subclusters. The horizontal axis represents the distance from the centre of the main cluster. Note that the tail is symmetric and the bow shock is not prominent in the X-ray surface brightness map/profile and is actually located in the region of minimal surface brightness (for details see the text).