The Ion Acoustic Solitary Waves and Double Layers in the Solar Wind Plasma

Details The Ion Acoustic Solitary Waves and Double Layers in the Solar Wind Plasma The Ion Acoustic Solitary Waves and Double Layers in the Solar Wind Plasma

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jass...23..209c&link_type=abstract

Journal of Astronomy and Space Sciences. Vol. 23, no. 3, 209-216

Astronomy and Astrophysics

Astronomy

Space Plasma, Ion Acoustic Solitary Wave, Soliton

Scientific paper

Ion acoustic solitary wave in a plasma consisting of electrons and ions with an external magnetic field is reinvestigated using the Sagdeev's potential method. Although the Sagdeev potential has a singularity for n<1, where n is the ion number density, we obtain new solitary wave solutions by expanding the Sagdeev potential up to δ n^4 near n=1. They are compressiv (rarefactive) waves and shock type solitary waves. These waves can exist all together as a superposed wave which may be used to explain what would be observed in the solar wind plasma. We compared our theoretical results with the data of the Freja satellite in the study of Wu et al.~(1996). Also it is shown that these solitary waves propagate with a subsonic speed.

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