process or secondarily after accelerated particles have interacted with the plasma); and the [[untwisting upflows]{}]{}that are induced by a global reconfiguration of the helicity within the newly opened magnetic field lines. Magnetic reconnection between closed twisted field lines and open untwisted lines [or large-scale closed surrounding field lines, as in @Wyper16] reconfigures the system and generates the [[untwisting upflows]{}]{}: a nonlinear kink wave develops upward along each reconnected field line in order to distribute the twist along the whole extent of the field line. The compressive component of the nonlinear wave induces compression and heating of the plasma and creates an upward bulk flow of material. The overall [[helical jet]{}]{}is the result of the sequential reconnection of multiple field lines.

@Torok09, in a zero-$\beta$ simulation, showed the upward propagation of a pure torsional/kink wave that they associated with the jet (see their Fig. 4). @Pariat09a [@Pariat10; @Pariat15a], in $\beta=0.25$ cases, also argued that the helical jet consisted of [[untwisting upflows]{}]{}driven by the propagation of torsional waves: these waves were induced by the sequential reconnection of twisted closed field lines with the straight open field. Figure 4 of [@Pariat09a hereafter PAD09], as well as Fig. 1 of PDD15, showed the dynamics 