Date: 26 Mar 2004
Satellite: Double Star TC-1
Depicts: Observations during magnetopause crossing
Copyright: Courtesy Z. Pu (Peking University, Beijing, China), H. Reme (CESR, France) and A. Fazakerley (MSSL, UK)

Magnetopause crossing with Double Star TC-1 of 26 March 2004.

From top to bottom the plot shows:

• The three components of the magnetic field
• Ion density and ion perpendicular temperature
• The three components of ion velocity
• Electron density
• Electron perpendicular temperature
• Electron heat flux

Note the IMF-B_z component (red) positive in the magnetosheath (before 09:41), the IMF-B_y (green) turning from positive to negative and the plasma flow V_y (green) turning from negative to positive around 09:42 UT. These all suggest a "component" reconnection at the magnetopause.