Dispersion relation of kinetic Alfven waves in superthermal plasma

2020 ◽  
Author(s):  
Geeta Shrivastava ◽  
Ganpat Ahirwar ◽  
Jaya Shrivastava
Keyword(s):  
Dispersion Relation ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Superthermal Plasma ◽  
Kinetic Alfvén Waves

Kinetic Alfvén waves in an inhomogeneous anisotropic magnetoplasma in the presence of an inhomogeneous electric field: particle aspect analysis

2000 ◽  
Vol 63 (4) ◽  
pp. 311-328 ◽  
Author(s):  
A. BARONIA ◽  
M. S. TIWARI
Keyword(s):  
Growth Rate ◽  
Dispersion Relation ◽  
Electric Field ◽  
Alfven Waves ◽  
Alfven Wave ◽  
Larmor Radius ◽  
Alfvén Waves ◽  
Temperature Anisotropy ◽  
Inhomogeneous Electric Field ◽  
Kinetic Alfvén Waves

Kinetic Alfvén waves in the presence of an inhomogeneous electric field applied perpendicular to the ambient magnetic field in an anisotropic, inhomogeneous magnetoplasma are investigated. The particle aspect approach is adopted to investigate the trajectories of charged particles in the electromagnetic field of a kinetic Alfvén wave. Expressions are found for the field-aligned current, the perpendicular current, the dispersion relation and the particle energies. The growth rate of the wave is obtained by an energy- conservation method. It is predicted that plasma density inhomogeneity is the main source of instability, and an enhancement of the growth rate by electric field inhomogeneity and temperature anisotropy is found. The dispersion relation and growth rate involve the finite-Larmor-radius effect, electron inertia and the temperature anisotropy of the magnetoplasma. The applicability of the investigation to the auroral acceleration region is discussed.

Kinetic Alfvén Waves Excited in Two-Dimensional Magnetic Reconnection

2018 ◽  
Vol 123 (8) ◽  
pp. 6655-6669 ◽  
Author(s):  
Hongtao Huang ◽  
Yiqun Yu ◽  
Lei Dai ◽  
Tieyan Wang
Keyword(s):  
Magnetic Reconnection ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Two Dimensional ◽  
Kinetic Alfvén Waves

Kinetic Alfven Waves in the Global Coupling Associated with Fast Flows

2021 ◽  
Author(s):  
Yu Lin ◽  
Lei Cheng ◽  
Xueyi Wang ◽  
Jay Johnson ◽  
J. D. Perez ◽  
...  
Keyword(s):  
Alfven Waves ◽  
Alfvén Waves ◽  
Global Coupling ◽  
Kinetic Alfvén Waves

Solitary kinetic Alfvén waves in the two‐fluid model

1996 ◽  
Vol 3 (8) ◽  
pp. 2879-2884 ◽  
Author(s):  
De‐Jin Wu ◽  
Guang‐Li Huang ◽  
De‐Yu Wang ◽  
Carl‐Gunne Fälthammar
Keyword(s):  
Fluid Model ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Two Fluid Model ◽  
Two Fluid ◽  
Kinetic Alfvén Waves
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