Panel (a): Distribution of |j|/|B| on a slice at x = 30.7 Mm. The purple circle marks the position of the current sheet at the X-point. Panel (b): Magnetic energy density at simulation time = 0. The purple circle marks the region of lower magnetic energy density near the flux rope. Panel (c): Lorentz force in the y direction. Panel (d): Lorentz force in the z direction. Panel (e): Magnetic pressure in the y direction. Panel (f): Magnetic pressure in the z direction. Panel (g): Magnetic tension force in the y direction. Panel (h): Magnetic tension force in the z direction. All panels show the physical quantity distribution on the same slice as Figs. 6a and 6b. Except panel b, all panels show the quantity distribution at simulation time = 5. The green cross marks the location of the wFR’s axis, and the cyan plus sign indicates the position of the small arcade. Note that the y-axis is reversed to facilitate comparison with Fig. 6.