Figure 8.

Reconnection jets in magnetotail magnetohydrodynamic (MHD) simulation by Birn and Hesse (2014) and in Hall‐MHD simulation by Nakamura et al. (2012). (a) Color‐coded By in x‐z plane at t = 132 at y = 1.5 together with the current density vectors (Δj) akin to Figure 8a of Birn and Hesse (2014). The dark blue and orange contours indicate regions of enhanced tailward and Earthward field‐aligned currents, respectively. Color‐coded (b) By (normalized to 20 nT) and (c) vertical (northward) electric field Ez (normalized to 20 mV/m) in the y‐z plane at t = 132 at x = −10 from the same MHD simulation. (d) Color‐coded By in x‐z plane at y = 63 di, (e) By and (f) Ez in the y‐z plane at x = 118 di, (g) Vi in the equatorial plane, and (h) Ehz and (i) (−Vi × B)z in the y‐z plane at x = 118 di from Hall‐MHD simulation by Nakamura et al. (2012). Possible Magnetospheric Multiscale location and direction of the crossing during events (i) and (ii) in the y‐z plane are shown as black thick arrows in (b), (c), (e), (f), (h), and (i). The thin arrows in (c) and (d) show the E × B drift vectors, while the other vectors are Vi flows. The color scale of By shown in (d) and (e) is normalized to the initial magnetic field outside the current sheet, B ₀, and the Vix in (g) is normalized to the Alfvén velocity outside the current sheet, V _A ~B ₀/(N ₀)^½, where N ₀ is the density outside the current sheet and Ez in (f), (h), and (i) is normalized to V _A B ₀.