THEMIS Multi-Spacecraft Survey of Reconnection and Flux Transfer Events at the Magnetopause

The pearls-on-a-string formation of the five THEMIS spacecraft in a near-equatorial orbit provides unprecedented opportunities to study the spatial structure and temporal evolution of reconnection and flux transfer events at the subsolar and flank magnetopause. Probes B, C, D are at separations comparable to the magnetopause layer thickness (100-500km), while the two outer probes, A and B, are at 1-2Re scale separations, providing the opportunity to monitor the pristine magnetosheath and magnetosphere. We present events observed with multiple THEMIS probes traversing different parts of the FTE core and the reconnection layer. We survey of the occurrence rates of such phenomena as a function of the solar wind plasma and magnetic field conditions.