Fig. 1From: Electron beam-associated symmetric electrostatic solitary waves on the separatrix of magnetic reconnection: multi-spacecraft analysisOverview of the magnetic reconnection event observed by Cluster on 29 July 2003. Top: observation history of Cluster from 18:20 to 18:40 on 29 July 2003. The black, red, green, and blue lines respectively represent the C1, C2, C3, and C4 observations. a–c The X- and Z-components of the magnetic field (B x , B z ) and the X-component of the plasma velocity. The vertical arrow denotes the flow reversal which occurred at ~18:29 UT. d The plasma β. The two horizontal dotted lines represent β = 0.1 and β = 1, which indicate the plasma sheet boundary layerBack to article page