Magnetic field topology in the southern hemisphere of the X–Z plane in the MSO coordinates for different IMF cone angles. Panels a–f stand for the IMF cone angle µ = 45°, 90°, 135°, 225°, 270°, and 315°, respectively. The solar wind conditions are P_d = 1 nPa and B_t = 3 nT (B_Y = 0 nT). The arrows indicate the upstream IMF direction, the black lines with arrows represent the magnetic field lines, the red lines describe the separatrix angles of the magnetic reconnection configurations, and the color bars show the solar wind thermal pressure.