Physics
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusmsm22a..07g&link_type=abstract
American Geophysical Union, Spring Meeting 2007, abstract #SM22A-07
Physics
2723 Magnetic Reconnection (7526, 7835), 2744 Magnetotail, 2790 Substorms, 6220 Jupiter, 6275 Saturn
Scientific paper
The fundamental attribute of the Near-Earth neutral line model is the accumulation of stored magnetic energy in the tail during a growth phase, and the sudden release of that energy during an expansion phase, followed by a recovery. The existence of substorms at both Jupiter and Saturn enables us to explore this model under varied boundary conditions. In particular the source of plasma convection is quite different at Earth, Jupiter and Saturn, being clearly solar-wind driven at Earth, internally driven at Jupiter, and under debate at Saturn. We use observations of the magnetotails of Jupiter and Saturn to show that analogous processes occur therein with both similarities to and differences with Earth. The rate of tail reconnection appears to be faster at Jupiter and Saturn, producing very strong north-south field, and the growth phases appear to be much longer. Despite the expected weakness of dayside reconnection with the interplanetary magnetic field, plasmoids are formed in the tail and the tail field strength increases and decreases as seen at Earth.
Dougherty K. M. K. M.
Ge Yong-Shuai
Jackman Caitriona M.
Jian Li
Russell Christopher T.
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