Vertical slices through two jets. The left and right columns show the jets in panels (a) and (b) of Fig. 2, respectively. Panels (a1, b1) show the radiative losses per volume in the 174 Å passband of EUI in a vertical slice. The red contours outline the boundaries between (locally) open and closed magnetic fields, with the open fields found above the respective contour. The two jets form at the tip of the boundary between open and closed field (arrows). Panels (a2, b2) show the mass flux and panels (a3, b3) the Poynting flux of magnetic energy. Blue indicate an upward directed flux. For both jets, there is an upward directed flux of mass and magnetic energy.