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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

On the ordinary mode Weibel instability in space plasmas: A comparison of three-particle distributions

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Author(s):
Rubab, Nazish [1] ; Chian, Abraham C. -L. [2, 3, 4, 5] ; Jatenco-Pereira, Vera [6]
Total Authors: 3
Affiliation:
[1] Inst Space & Technol, Dept Space Sci, Islamabad - Pakistan
[2] Natl Inst Space Res INPE, Sao Jose Dos Campos - Brazil
[3] Univ Adelaide, Sch Math Sci, Adelaide, SA - Australia
[4] George Washington Univ, Dept Biomed Engn, Washington, DC - USA
[5] Inst Aeronaut Technol & World Inst Space Environm, Sao Jose Dos Campos - Brazil
[6] Univ Sao Paulo, Dept Astron, Geofis & Ciencias Atmosfer IAG USP, Inst Astron, Sao Paulo, SP - Brazil
Total Affiliations: 6
Document type: Journal article
Source: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS; v. 121, n. 3, p. 1874-1885, MAR 2016.
Web of Science Citations: 2
Abstract

Electromagnetic wave fluctuations driven by temperature anisotropy in plasmas are of interest for solar flare, solar corona, and solar wind studies. We investigate the dispersion characteristics of electromagnetic wave propagating perpendicular to the uniform magnetic field which is derived by using multiple particle distribution functions: Maxwellian, bi-kappa, and product bi-kappa. The presence of temperature anisotropy in which the parallel plasma kinetic energy density exceeding by a sufficient amount can lead to Weibel-like electromagnetic instability. A general description is made to calculate the growth/damping rates of Weibel-like modes when the temperature anisotropy and nonthermalfeatures are associated with these distributions. We demonstrate that for the zeroth cyclotron harmonic, our results for bi-Maxwellian and bi-kappa overlap with each other, while the product bi-kappa distribution shows some dependence on parallel kappa index. For higher harmonics, the growth rates vanish and the damping prevails. (AU)

FAPESP's process: 13/10559-5 - Investigation of high energy and plasma astrophysics phenomena: theory, numerical simulations, observations, and instrument development for the Cherenkov Telescope Array (CTA)
Grantee:Elisabete Maria de Gouveia Dal Pino
Support type: Research Projects - Thematic Grants