Effects of nonextensivity on the electron-acoustic solitary structures in a magnetized electron−positron−ion plasma
- Authors: Rafat A.1, Rahman M.M.1, Alam M.S.1, Mamun A.A.1
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Affiliations:
- Department of Physics
- Issue: Vol 42, No 8 (2016)
- Pages: 792-798
- Section: Plasma Dynamics
- URL: https://journals.rcsi.science/1063-780X/article/view/185916
- DOI: https://doi.org/10.1134/S1063780X16080092
- ID: 185916
Cite item
Abstract
Obliquely propagating electron-acoustic solitary waves (EASWs) in a magnetized electron−positron−ion plasma (containing nonextensive hot electrons and positrons, inertial cold electrons, and immobile positive ions) are precisely investigated by deriving the Zakharov–Kuznetsov equation. It is found that the basic features (viz. polarity, amplitude, width, phase speed, etc.) of the EASWs are significantly modified by the effects of the external magnetic field, obliqueness of the system, nonextensivity of hot positrons and electrons, ratio of the hot electron temperature to the hot positron temperature, and ratio of the cold electron number density to the hot positron number density. The findings of our results can be employed in understanding the localized electrostatic structures and the characteristics of EASWs in various astrophysical plasmas.
About the authors
A. Rafat
Department of Physics
Author for correspondence.
Email: rafat.plasma@gmail.com
Bangladesh, Savar, Dhaka, 1342
M. M. Rahman
Department of Physics
Email: rafat.plasma@gmail.com
Bangladesh, Savar, Dhaka, 1342
M. S. Alam
Department of Physics
Email: rafat.plasma@gmail.com
Bangladesh, Savar, Dhaka, 1342
A. A. Mamun
Department of Physics
Email: rafat.plasma@gmail.com
Bangladesh, Savar, Dhaka, 1342