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Alfvénic Solitary and Shock Waves in Plasmas
Ruhr University Bochum, Germany and University of California San Diego, La Jolla, USA.
Ruhr University Bochum, Germany.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, The Institute of Technology.
2012 (English)In: Multi-scale Dynamical Processes in Space and Astrophysical Plasmas / [ed] Manfred P. Leubner and Zoltán Vörös, Springer Berlin/Heidelberg, 2012, 129-141 p.Chapter in book (Other academic)
Abstract [en]

We present a review of nonlinear Alfvénic solitary and shock waves in a magnetized electron-ion plasma. The dynamics of these nonlinear dispersive Alfvén waves is governed by the two-fluid equations, coupled with Faraday’s and Ampère’s laws. First, we demonstrate the existence of large amplitude compressional Alfvénic solitary and shock waves propagating across the external magnetic field in a warm electron-ion magnetoplasma. It is found that these nonlinear structures can exist in well defined speed ranges above the Alfvén speed, and their widths are several times larger than the electron skin depths. Second, we study the formation of nonlinear slow magnetosonic solitary (SMS) waves propagating almost perpendicular to the external magnetic field direction. The propagation speed of the SMS waves is below the Alfvén speed and their width is a few ion skin depth in a collisionless magnetoplasma. The nonlinear dispersive Alfvén waves, as discussed here, can be associated with localized electromagnetic field excitations in magnetized laboratory and space plasmas that are composed of magnetized electrons and ions.

Place, publisher, year, edition, pages
Springer Berlin/Heidelberg, 2012. 129-141 p.
, Astrophysics and Space Science Proceedings, ISSN 1570-6591(print), 1570-6605(online) ; 33
Keyword [en]
Physics, Astrophysics, Extraterrestrial Physics, Space Sciences, Astrophysics and Astroparticles
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-85816DOI: 10.1007/978-3-642-30442-2_15ISBN: 978-3-642-30441-5ISBN: 978-3-642-30442-2OAI: diva2:572851
Available from: 2012-11-29 Created: 2012-11-29 Last updated: 2014-12-08Bibliographically approved

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