Volume 85, Number 4, February 2009
|Number of page(s)||5|
|Section||Geophysics, Astronomy and Astrophysics|
|Published online||09 March 2009|
Whistler regime reconnection rates
Department of Electrical and Computer Engineering and CSPAR, University of Alabama - Huntsville, AL 35899, USA
Corresponding author: firstname.lastname@example.org
Accepted: 3 February 2009
Based on whistler mode group velocity cones radiated by electromagnetic perturbations (EMPs) in the diffusion region, we predict the magnetic reconnection rates R as a function of the half-width w of the current sheet in the diffusion region. Since an EMP in the diffusion region has a finite width transverse to the ambient magnetic field, its perpendicular wave number () spectrum also has a finite width. We first give the rates (R) for monochromatic (discrete) values of proportional to w-1. Such rates are used to determine the rates averaged over the wave-number spectrum of a Gaussian-shaped EMP. We compare the predictions on R with results from numerical simulations and satellite observations, showing remarkable agreement.
PACS: 94.30.cp – Magnetic reconnection / 94.30.cl – Magnetotail / 94.30.ch – Magnetopause
© EPLA, 2009
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