Physics
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29m...4s&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 13, pp. 4-1, CiteID 1626, DOI 10.1029/2001GL013536
Physics
6
Magnetospheric Physics: Magnetopause, Cusp, And Boundary Layers, Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Magnetospheric Physics: Solar Wind/Magnetosphere Interactions
Scientific paper
This note reports properties of a little-studied but possibly common mode of magnetic reconnection-``flow-through reconnection'' or ``FTR''-characterized by plasma flowing at high speed right through a stationary reconnection site. FTR is readily identified in global MHD simulations by the following diagnostic properties, which affect slab-like portions (tongues) of the magnetopause, usually at high latitudes and along the flanks. 1. A magnetic null point lies near the downwind extreme of an FTR tongue. 2. Elsewhere within the tongue the magnetic field is also weak. 3. Electric current density is strong. 4. ``J-dot-E'' dissipation is strong. 5. Most remarkable, the electric field is antiparallel to and stronger than -V × B, the motional electric field. This last property implies that plasma and magnetic field flow in opposite directions-plasma downwind, magnetic field upwind. Here we discuss FTR for strictly northward interplanetary magnetic field, which manifests FTR properties in idealized geometry.
Erickson Gary M.
Maynard Nelson C.
Schoendorf Jacqueline A.
Siebert Keith D.
Siscoe George L.
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