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The substorm current wedge and field-aligned currents in MHD simulations of magnetotail reconnection

Birn, J. ; Hesse, M.

Journal of Geophysical Research, 1991-02, Vol.96 (A2), p.1611-1618 [Periódico revisado por pares]

Legacy CDMS: Blackwell Publishing Ltd

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Título:
The substorm current wedge and field-aligned currents in MHD simulations of magnetotail reconnection
Autor: Birn, J. ; Hesse, M.
Assuntos: 640201 - Atmospheric Physics- Auroral, Ionospheric, & Magetospheric Phenomena ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; COMPUTERIZED SIMULATION ; CURRENT DENSITY ; CURRENTS ; DIFFUSION ; EARTH ATMOSPHERE ; EARTH MAGNETOSPHERE ; ELECTRIC CURRENTS ; Geophysics ; INSTABILITY ; IONOSPHERE ; MAGNETIC BAYS ; MAGNETIC RECONNECTION ; MAGNETOTAIL ; PLANETARY IONOSPHERES ; PLASMA INSTABILITY ; PLASMA MACROINSTABILITIES ; PLASMA SHEET ; PLASMOIDS ; SIMULATION ; SOLAR ACTIVITY ; SOLAR WIND ; TEARING INSTABILITY ; THREE-DIMENSIONAL CALCULATIONS
É parte de: Journal of Geophysical Research, 1991-02, Vol.96 (A2), p.1611-1618
Notas: ArticleID:90JA01762
istex:C210630EBDE812051DF8EEA98F6D8934C55083F4
ark:/67375/WNG-1CZGSG3Z-M
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Descrição: Results are reported from a three-dimensional MHD simulation of magnetotail reconnection, which, in contrast to earlier ones, starts from an equilibrium configuration that contains a region 1 type field-aligned current system at the plasma sheet/lobe boundary. This current system is found from equilibrium theory as the consequence of boundary conditions, which require that field lines at large distances from the earth become aligned-with the tail axis, consistent with observations and the expected consequences of the interaction with the solar wind. As in earlier simulations, the dynamic evolution develops from a slow diffusion to the fast growth of a three-dimensional tearing mode, initiated by the sudden occurrence or increase of resistivity, leading again to the formation and subsequent tailward ejection of a plasmoid, associated with fast plasma flows. In addition there are changes of the electric current system which are consistent with the substorm current wedge picture inferred from observations.
Editor: Legacy CDMS: Blackwell Publishing Ltd
Idioma: Inglês

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The substorm current wedge and field-aligned currents in MHD simulations of magnetotail reconnection

Birn, J. ; Hesse, M.

Legacy CDMS: Blackwell Publishing Ltd

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