Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsm11c1167r&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SM11C-1167
Physics
2784 Solar Wind/Magnetosphere Interactions
Scientific paper
We have performed a laboratory simulation of the magnetosphere. The main aim of this experiment is to understand the acceleration mechanism of the aurora. Our laboratory simulations are examined to satisfy the MHD scaling law. Electric field is measured on the sun-earth line in the nightside of the magnetosphere. The result has shown that the earthward electric field exists on the tail current sheet stably. The value is consistent with the predicted electric field in the magnetospheric current sheet. In this experiment, the dynamic pressure of the simulated solar wind is changed to investigate the dynamic behavior of the magnetosphere and the mechanism of the substorm. The measured electric field in the tail current sheet is modulated due to the change of the solarwind dynamic pressure. The experimental results also show that the magnetospheric current in the plasmapause exists rather longer time after the disappearance of the solar wind. It is found that the confinement time is consistent with the Bohm_fs magnetic field diffusion time.
Minami Shigeyuki
Rana Raman
Suzuki Yasuhiro
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