Trapping and amplification of quasi-longitudinal whistler wave in kinetic Alfvén wave localized structures

2016 ◽  
Vol 361 (3) ◽  
Author(s):  
Rajesh Kumar Rai ◽  
Swati Sharma ◽  
Nidhi Gaur ◽  
R. P. Sharma
Keyword(s):  
Whistler Wave ◽  
Alfven Wave ◽  
Kinetic Alfvén Wave ◽  
Localized Structures ◽  
Kinetic Alfven Wave

Numerical simulations to study whistler turbulence by kinetic Alfvén wave

2011 ◽  
Vol 77 (6) ◽  
pp. 715-724 ◽  
Author(s):  
R. P. SHARMA ◽  
K. BATRA ◽  
N. K. DWIVEDI
Keyword(s):  
Energy Exchange ◽  
Alfven Wave ◽  
Kinetic Alfvén Wave ◽  
Earth’S Magnetosphere ◽  
Localized Structures ◽  
Envelope Solitons ◽  
Kinetic Alfven Wave ◽  
Earth's Magnetosphere ◽  
Perturbation Energy ◽  
Model Equations

AbstractThis work presents the model equations governing the excitation of weak whistler by a stronger Kinetic Alfvén wave (KAW) in the plasma having β value (β ≫ me/mi, where beta is the ratio of the ion sound speed to the Alfvén speed), applicable to magnetotail in Earth's magnetosphere, when the ponderomotive nonlinearity is incorporated in the KAW dynamics. Numerical solution of the model equations has been obtained when the incident pump KAW is having a small perturbation. Energy exchange between main KAW and perturbation and the resulting localized structures of the KAW have been studied. A weak whistler signal propagating in these localized structures is amplified and leads to the development of envelope solitons. Our result reveals that the amplified (excited) whistler has an electric field power spectrum that is steeper than k−8/3. This result is consistent with recent observations by the Cluster spacecraft Eastwood et al. (Phys. Rev. Lett., vol. 102, 2009, 035001) in the magnetotail region of the Earth's magnetosphere.

Study of localized structures of kinetic Alfvén wave and generation of turbulence

2015 ◽  
Vol 22 (6) ◽  
pp. 062304
Author(s):  
Anju Kumari ◽  
R. P. Sharma ◽  
Nitin Yadav
Keyword(s):  
Alfven Wave ◽  
Kinetic Alfvén Wave ◽  
Localized Structures ◽  
Kinetic Alfven Wave

Generation of the kinetic alfven wave and lower hybrid wave in space plasma

2001 ◽  
Vol 7 (2s) ◽  
pp. 59-66
Author(s):  
A.K. Yukhimuk ◽  
◽  
V.N. Fedun ◽  
Yu. Voitenko ◽  
E.K. Sirenko ◽  
...  
Keyword(s):  
Space Plasma ◽  
Alfven Wave ◽  
Lower Hybrid ◽  
Hybrid Wave ◽  
Lower Hybrid Wave ◽  
Kinetic Alfvén Wave ◽  
Kinetic Alfven Wave

Scattering of ordinary electromagnetic wave on the kinetic alfven wave

1999 ◽  
Vol 5 (1) ◽  
pp. 48-51
Author(s):  
A.K. Yukhimuk ◽  
◽  
V.A. Yukhimuk ◽  
O.G. Fal'ko ◽  
E.K. Sirenko ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Alfven Wave ◽  
Kinetic Alfvén Wave ◽  
Kinetic Alfven Wave
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