Two-dimensional slices through the 3D plasma density map shown in Fig. 2 (σ = 4.5, t = 8.44 r_min/c). Panel a: poloidal cut at ϕ = 0°. White solid lines with arrows represent the plasma bulk velocity streamlines. Panel b: equatorial cut (θ = π/2). Panel c: cuts through the θϕ plane at r/r_min = 3.65, 6.13, and 9.17, zoomed-in on the current layer. These radii are indicated by dashed black lines in panels a and b. Panel c: white contours with arrows show the magnetic field lines.