Dynamics of the reconnection outflow. First column: Horizontal mid-plane map of the value of the velocity component perpendicular to the magnetic field at the same three times shown in Fig. 2, i.e. Δt = 0 s (top, current sheet formation), Δt = 10 s (middle, outflow acceleration), and Δt = 20 s (bottom, outflow deceleration). The velocity field in the plane is also shown (arrows). Second column: Horizontal mid-plane map of the current density. The map saturates where the current density exceeds the threshold value for dissipation. The magnetic field in the plane is also shown (arrows). Third column: Horizontal mid-plane map of the temperature. (See Movie 3.)