Volume 95, Number 4, August 2011
|Number of page(s)||4|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||15 July 2011|
Large-amplitude Alfvénic shocks in a collisional magnetoplasma
International Centre for Advanced Studies in Physical Sciences and Institute for Theoretical Physics, Faculty of Physics & Astronomy, Ruhr University Bochum - D-44780 Bochum, Germany, EU
2 Department of Mechanical and Aerospace Engineering, University of California San Diego La Jolla, CA 92093, USA
3 Department of Physics, Linköping University - SE-58183 Linköping, Sweden, EU
Accepted: 29 June 2011
A theory for large-amplitude Alfvénic shocks across the external magnetic field in a collisional magnetoplasma is presented. For this purpose, we use the continuity and momentum equations for the electrons and ions, together with Ampère's and Faraday's laws, to derive the governing nonlinear equations for large-amplitude compressional Alfvénic waves. It is found that the latter can appear in the form of large-amplitude Alfvénic shocks that propagate with the super-Alfvénic speed.
PACS: 52.30.Cv – Magnetohydrodynamics (including electron magnetohydrodynamics) / 95.30.Qd – Magnetohydrodynamics and plasmas
© EPLA, 2011
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