Formation of a Reconnection Site A numerical simulation based on
a global MagnetoHydroDynamic (MHD) model was run to reproduce
the 8 May 2004 event. This image shows the topology of the
magnetic field produced by the global MHD model around 10:00 UT,
viewed from the direction of the Sun. Earth is represented by
the blue sphere, the location of the Double Star TC-1 spacecraft
is indicated, the magnetic field lines are colour-coded:
red=unconnected, yellow=open, blue=closed. The model reveals the
formation of a reconnection site extending about 7 to 10
Magnetic Local Time (MLT), in agreement with the data collected
by both Double Star TC-1 and Cluster.