Change search
ReferencesLink to record
Permanent link

Direct link
An analytical solution of finite‐amplitude solitary kinetic Alfvén waves
KTH, Superseded Departments, Alfvén Laboratory. KTH, School of Electrical Engineering (EES), Space and Plasma Physics.
1995 (English)In: Physics of Plasmas, ISSN 1070-664X, Vol. 2, 4476-4481 p.Article in journal (Refereed) Published
Abstract [en]

An analytical solution of finite-amplitude solitary kinetic Alfven waves (SKAWs) in a low-beta (beta much less than m(e)/m(i) much less than 1) plasma is presented. This solution has been compared with the solution of the Korteweg-de Vries (KdV) equation in the small-amplitude limit. It is found that the KdV soliton solution is valid only for the maximum relative density perturbation N-m<0.1. For the larger N-m, the exact analytical solution shows that the SKAWs have a much wider structure and much stronger perturbed fields than the KdV solitons with the same N-m. Moreover, the relations between the width and the amplitude of SKAWs are also considerably different from that of the KdV solitons. In addition the possibility for applying these results to some events observed from the Freja scientific satellite is discussed. (The Freja is a Swedish-German scientific project for the investigation of ionospheric and magnetospheric plasmas, and the Freja satellite was launched on a Long-March II rocket of China on October 6, 1992.) (C) 1995 American Institute of Physics.

Place, publisher, year, edition, pages
1995. Vol. 2, 4476-4481 p.
National Category
Fusion, Plasma and Space Physics
URN: urn:nbn:se:kth:diva-92871DOI: 10.1063/1.871005OAI: diva2:514356
NR 20140805Available from: 2012-04-08 Created: 2012-04-07 Last updated: 2012-04-08Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Fälthammar, Carl-Gunne
By organisation
Alfvén LaboratorySpace and Plasma Physics
In the same journal
Physics of Plasmas
Fusion, Plasma and Space Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 25 hits
ReferencesLink to record
Permanent link

Direct link