Periodic kinetic Alfvén waves and overtaking between multi-solitons in nonthermal electron–positron–ion plasma

Kuldeep Singh; Gursirat Singh; N. S. Saini

doi:10.1016/j.cjph.2021.12.004

Periodic kinetic Alfvén waves and overtaking between multi-solitons in nonthermal electron–positron–ion plasma

Kuldeep Singh, Gursirat Singh, N. S. Saini

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

In this paper, the formation of periodic (cnoidal) and solitary kinetic Alfvén waves (KAWs) in nonthermal electron–positron–ion plasma has been illustrated. The KdV equation has been derived by using the reductive perturbation technique. The Sagdeev potential method is used to obtain the solution of KdV equation for examining the dynamics of periodic KAWs. Further, Hirota bilinear method is applied to examine the overtaking process and the expressions of phase shifts of multi-solitons have been determined. Only positive potential kinetic Alfvénic (KA) solitary and periodic waves are evolved in the given plasma environment. The influence of plasma beta, positron density, angle of propagation, nonthermality of electrons and positrons has been investigated on the behaviour of periodic (cnoidal) KAWs. The combined impact of density, nonthermality of electrons as well as positrons has vastly modified the phase shifts of double-as well as triple-solitons. This investigation may have applications for particle acceleration and energy transportation in galactic nucleus and interstellar medium where nonthermal electron and positron pairs exist.

Original language	English
Pages (from-to)	2060-2072
Number of pages	13
Journal	Chinese Journal of Physics
Volume	77
DOIs	https://doi.org/10.1016/j.cjph.2021.12.004
State	Published - Jun 2022
Externally published	Yes

Funding

KS thankfully acknowledges financial support by the project FSU-2021-012/8474000352 “Modeling of Nonlinear Waves and Shocks in Space and Laboratory Plasmas” (PI: Ioannis Kourakis), funded by Khalifa University of Science and Technology (Abu Dhabi, United Arab Emirates) . NSS gratefully acknowledges the support for this research work from Department of Science and Technology, Govt. of India, New Delhi under DST-SERB project No. CRG/2019/003988 . KS thankfully acknowledges financial support by the project FSU-2021-012/8474000352 ?Modeling of Nonlinear Waves and Shocks in Space and Laboratory Plasmas? (PI: Ioannis Kourakis), funded by Khalifa University of Science and Technology (Abu Dhabi, United Arab Emirates). NSS gratefully acknowledges the support for this research work from Department of Science and Technology, Govt. of India, New Delhi under DST-SERB project No. CRG/2019/003988.

Funders	Funder number
DST-SERB	CRG/2019/003988
Department of Science and Technology, Ministry of Science and Technology, India
Khalifa University of Science, Technology and Research

Keywords

Alfvén waves
Hirota bilinear method
Nonthermal distribution
Periodic waves
Solitary waves

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10.1016/j.cjph.2021.12.004

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title = "Periodic kinetic Alfv{\'e}n waves and overtaking between multi-solitons in nonthermal electron–positron–ion plasma",

abstract = "In this paper, the formation of periodic (cnoidal) and solitary kinetic Alfv{\'e}n waves (KAWs) in nonthermal electron–positron–ion plasma has been illustrated. The KdV equation has been derived by using the reductive perturbation technique. The Sagdeev potential method is used to obtain the solution of KdV equation for examining the dynamics of periodic KAWs. Further, Hirota bilinear method is applied to examine the overtaking process and the expressions of phase shifts of multi-solitons have been determined. Only positive potential kinetic Alfv{\'e}nic (KA) solitary and periodic waves are evolved in the given plasma environment. The influence of plasma beta, positron density, angle of propagation, nonthermality of electrons and positrons has been investigated on the behaviour of periodic (cnoidal) KAWs. The combined impact of density, nonthermality of electrons as well as positrons has vastly modified the phase shifts of double-as well as triple-solitons. This investigation may have applications for particle acceleration and energy transportation in galactic nucleus and interstellar medium where nonthermal electron and positron pairs exist.",

keywords = "Alfv{\'e}n waves, Hirota bilinear method, Nonthermal distribution, Periodic waves, Solitary waves",

author = "Kuldeep Singh and Gursirat Singh and Saini, {N. S.}",

note = "Publisher Copyright: {\textcopyright} 2022 The Physical Society of the Republic of China (Taiwan)",

year = "2022",

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doi = "10.1016/j.cjph.2021.12.004",

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AU - Singh, Kuldeep

AU - Singh, Gursirat

AU - Saini, N. S.

PY - 2022/6

Y1 - 2022/6

N2 - In this paper, the formation of periodic (cnoidal) and solitary kinetic Alfvén waves (KAWs) in nonthermal electron–positron–ion plasma has been illustrated. The KdV equation has been derived by using the reductive perturbation technique. The Sagdeev potential method is used to obtain the solution of KdV equation for examining the dynamics of periodic KAWs. Further, Hirota bilinear method is applied to examine the overtaking process and the expressions of phase shifts of multi-solitons have been determined. Only positive potential kinetic Alfvénic (KA) solitary and periodic waves are evolved in the given plasma environment. The influence of plasma beta, positron density, angle of propagation, nonthermality of electrons and positrons has been investigated on the behaviour of periodic (cnoidal) KAWs. The combined impact of density, nonthermality of electrons as well as positrons has vastly modified the phase shifts of double-as well as triple-solitons. This investigation may have applications for particle acceleration and energy transportation in galactic nucleus and interstellar medium where nonthermal electron and positron pairs exist.

AB - In this paper, the formation of periodic (cnoidal) and solitary kinetic Alfvén waves (KAWs) in nonthermal electron–positron–ion plasma has been illustrated. The KdV equation has been derived by using the reductive perturbation technique. The Sagdeev potential method is used to obtain the solution of KdV equation for examining the dynamics of periodic KAWs. Further, Hirota bilinear method is applied to examine the overtaking process and the expressions of phase shifts of multi-solitons have been determined. Only positive potential kinetic Alfvénic (KA) solitary and periodic waves are evolved in the given plasma environment. The influence of plasma beta, positron density, angle of propagation, nonthermality of electrons and positrons has been investigated on the behaviour of periodic (cnoidal) KAWs. The combined impact of density, nonthermality of electrons as well as positrons has vastly modified the phase shifts of double-as well as triple-solitons. This investigation may have applications for particle acceleration and energy transportation in galactic nucleus and interstellar medium where nonthermal electron and positron pairs exist.

KW - Alfvén waves

KW - Hirota bilinear method

KW - Nonthermal distribution

KW - Periodic waves

KW - Solitary waves

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DO - 10.1016/j.cjph.2021.12.004

M3 - Article

AN - SCOPUS:85129453712

SN - 0577-9073

VL - 77

SP - 2060

EP - 2072

JO - Chinese Journal of Physics

JF - Chinese Journal of Physics

ER -

Periodic kinetic Alfvén waves and overtaking between multi-solitons in nonthermal electron–positron–ion plasma

Abstract

Funding

Keywords

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