Fig. 3: Electron-scale boundary of the Hall current reversal.
From: Electron Bernstein waves driven by electron crescents near the electron diffusion region
a B. b Perpendicular components of J calculated by high-resolution FPI particle moments. c E with \(f\, <\,\)50 Hz. d Electron pitch-angle distribution between 20 eV and 1 keV. The red and blue vertical lines represent the neutral line and the magnetospheric separatrix, respectively. e–h Electron distributions at times indicated by the two vertical yellow bars in (a–c), respectively. J calculated by FPI data agrees well with the current estimated by the curlometer method40, which has been verified by the current event and other MMS events37,38. The vectors are all presented in LMN coordinate system, and the L and M directions normalized by 10\(^{4}\) km s\(^{-1}\) are projected on (e–h).
