Magnetic reconnection within rolled-up MHD-scale Kelvin-Helmholtz vortices: Two-fluid simulations including finite electron inertial effects

Details Magnetic reconnection within rolled-up MHD-scale Kelvin-Helmholtz vortices: Two-fluid simulations including finite electron inertial effects Magnetic reconnection within rolled-up MHD-scale Kelvin-Helmholtz vortices: Two-fluid simulations including finite electron inertial effects

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3221102n&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 21, CiteID L21102

Physics

Plasma Physics

19

Magnetospheric Physics: Magnetopause And Boundary Layers, Magnetospheric Physics: Mhd Waves And Instabilities (2149, 6050, 7836), Space Plasma Physics: Magnetic Reconnection (2723, 7526), Space Plasma Physics: Transport Processes

Scientific paper

We have performed two-dimensional two-fluid simulations including finite electron inertial effects to investigate the cross-scale coupling in the evolution of MHD-scale Kelvin-Helmholtz (KH) mode. We focus on the model in which density is uniform and only the in-plane magnetic field component is present. The effects of the velocity jump across the shear layer and those of the variation of the magnetic field intensity across the shear layer are considered. When the shear is strong enough to make a KH vortex highly rolled-up, within-the-vortex reconnection is seen to play crucial roles in determining the structure of the large-scale vortex itself. Especially when the magnetic field intensity is significantly unbalanced across the shear layer, injection of a magnetic bubble is seen to result from the reconnection process.

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