Analytical MHD model of three-dimensional time-dependent reconnection in a compressible plasma

Comment on “Scaling of asymmetric magnetic reconnection: General theory and collisional simulations” [Phys. Plasmas 14, 102114 (2007)]

“…5 This sort of one dimensional mass, energy, and stress balance analysis is also part of the more general time dependent case analyzed in Ref. 6 even in higher dimensions with finite reconnection line, 7 and additional shear in velocity. 8 In this time dependent analysis there appears as a typical velocity also the quadratic mean…”

“…We do not agree with the statement that "little was known about asymmetric reconnection until recently" 3 because several parts, in particular, stress balance, have been studied in detail in the past. [5][6][7][8][10][11][12] Physically, as can be seen from Eq. ͑10͒, there is an Alfvén wave standing in the inflow and as a consequence, Alfvén and plasma velocities are related by stress balance as given by Eq.…”