7-11 July 2014
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=16&confId=34"><font color=#0000ff>SAIP2014 Proceedings published on 17 April 2015</font></a>

Polarity changes of small-amplitude ion-acoustic and electron-acoustic solitons in multi-fluid space plasmas

8 Jul 2014, 10:20
D Les 204

D Les 204

Oral Presentation Track D2 - Space Science Space


Dr Carel Olivier (South African National Space Agency)

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The properties of ion-acoustic and electron-acoustic solitons are studied for fluid models describing three-component and four-component space plasmas. Each plasma model is composed of one or two (different temperatures but same mass) ion species and one or two (different temperatures) electron species. We use a reductive perturbation method to derive Korteweg- deVries equations that describe small-amplitude solitons for each model. The results are shown to be in good agreement with arbitrary amplitude soliton results available in the literature. A comparison of the results for the different models will provide insight into how polarity changes in the observed soliton structures are related to the plasma composition.

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Main supervisor (name and email)<br>and his / her institution

Dr. Shimul Maharaj smaharaj@sansa.org.za

Primary author

Dr Carel Olivier (South African National Space Agency)


Prof. Ramesh Bharuthram (University of the Western Cape) Dr Shimul Kumar Maharaj (South African National Space Agency)

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