umu.sePublications
Change search
ReferencesLink to record
Permanent link

Direct link
On the instability of electrostatic waves in a nonuniform electron-positron magnetoplasma
Umeå University, Faculty of Science and Technology, Department of Physics. Institut für Theoretische Physik IV, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany; School of Physics, University of KwaZulu-Natal, Durban 4000, South Africa.
2008 (English)In: Physics Letters A, ISSN 0375-9601, E-ISSN 1873-2429, Vol. 372, no 22, 4067-4075 p.Article in journal (Refereed) PublishedText
Abstract [en]

The dispersion properties of three-dimensional electrostatic waves in a nonuniform electron-positron (EP) magnetoplasma are analyzed. A new dispersion relation is derived by use of the electron and positron density responses arising from the electron and positron continuity and Poisson equations. In the local approximation, the dispersion relation admits two wave modes with different velocities. The growth rates of various modes are illustrated both analytically and numerically. Considering the temperature gradients produces a linearly stable transverse mode. The growth rate of the slow mode instability due to the density inhomogeneity only is the highest one, though it appears at higher thermal energy. The angle of the wave propagation affects drastically on the instability features in each case. The applications of the present analysis are briefly discussed.

Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2008. Vol. 372, no 22, 4067-4075 p.
Keyword [en]
extragalactic radio-sources, Alfven vortices, neutron-star, plasmas, driven, modes, vortex, field
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:umu:diva-117498DOI: 10.1016/j.physleta.2008.03.024ISI: 000256463900021OAI: oai:DiVA.org:umu-117498DiVA: diva2:908719
Available from: 2016-03-03 Created: 2016-03-01 Last updated: 2016-03-03Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Shukla, Padma Kant
By organisation
Department of Physics
In the same journal
Physics Letters A
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: 11 hits
ReferencesLink to record
Permanent link

Direct link