Reconstruction of a magnetic flux rope from THEMIS observations

Details Reconstruction of a magnetic flux rope from THEMIS observations Reconstruction of a magnetic flux rope from THEMIS observations

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3517s05l&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 17, CiteID L17S05

Physics

12

Magnetospheric Physics: Magnetotail, Magnetospheric Physics: Plasma Sheet

Scientific paper

We investigate a magnetic flux rope (MFR) observed by THEMIS near the duskside magnetopause on 20 May 2007 using the reconstruction technique based on solving the Grad-Shafranov equation. The MFR has characteristics distinct from the adjacent magnetosheath and magnetosphere regions. In spite of these differences, the reconstruction result shows that the MFR is connected simultaneously with both the magnetosheath and the magnetosphere in terms of the magnetic vector potential characteristics. This result provides strong evidence that the MFR represents the union of these two regions. It has a small spatial dimension of ~0.5 R E, a strong core magnetic field of >50 nT, and an intense axial current density of >40 nA/m2 with non-negligible current densities transverse to its axis.

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