Stretching and Collapse of the Nightside Magnetosphere at 9Re

Details Stretching and Collapse of the Nightside Magnetosphere at 9Re Stretching and Collapse of the Nightside Magnetosphere at 9Re

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsm23b..08g&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #SM23B-08

Physics

2740 Magnetospheric Configuration And Dynamics, 2744 Magnetotail, 7835 Magnetic Reconnection

Scientific paper

During the fall of 2001, 2002 and 2003, the apsides of Polar spacecraft precessed through the equatorial plane. The plasma sheet at 9 Re was probed near local midnight. Sometimes the magnetic field magnitude in this region was very low, below 5 nT. However, no reconnection was observed at this distance in our investigation. But when the field was so weak, we saw a variety of dynamic signatures associated with magnetic reconnection including stretching and collapse of magnetic field. In this study, we present an event during which the magnetic field at about 9 Re was strongly and rapidly stretched and then suddenly collapsed. During the collapse of magnetic field strength, there was an immediate dipolarization which suggests that the onset of magnetic reconnection occurred very near this region.

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