Multi-Point Measurements of Flux Ropes and TCRs in the Earth's Tail: Recent Progress and Future Opportunities

Details Multi-Point Measurements of Flux Ropes and TCRs in the Earth's Tail: Recent Progress and Future Opportunities Multi-Point Measurements of Flux Ropes and TCRs in the Earth's Tail: Recent Progress and Future Opportunities

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm44b..04s&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SM44B-04

Physics

2723 Magnetic Reconnection (7526, 7835), 2744 Magnetotail

Scientific paper

The availability of multi-point measurements has greatly enhanced our knowledge of magnetic flux rope structure, motion, and role in the substorm process. Combined with observations of the traveling compression regions that they produce in the lobes, it is now known that the near-tail plasma sheet, X > -30 Re, frequently contains small, several Earth radii diameter flux ropes being swept both Earthward and tailward by reconnection driven fast plasma flows. Between X ~ -10 and -15 Re the "BBF-type" flux ropes become less frequent as they are pushed up against the inner magnetosphere and dissipate presumably through "re- reconnection" with the Earth's magnetic field. In the more distant tail the "plasmoid-type" flux ropes grow, either due to continuing reconnection or by mergers between adjacent flux ropes, until they have linear dimensions of several tens of Earth radii. We review recent developments in our knowledge of these fast- moving and rapidly evolving three dimensional magnetic structures with an emphasis on the enabling role of multi-point data sets from Double Star and Cluster. Finally, the future opportunities to be offered by the up- coming THEMIS and Magnetospheric MultiScale missions will be discussed.

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