Nonlinear evolution of 3D whistler waves in space plasmas

2017 ◽  
Vol 24 (6) ◽  
pp. 062104
Author(s):  
Neha Pathak ◽  
Nitin Yadav ◽  
R. P. Sharma
Keyword(s):  
Nonlinear Evolution ◽  
Space Plasmas ◽  
Whistler Waves

Nonlinear evolution of the modulational instability of whistler waves

1990 ◽  
Vol 64 (8) ◽  
pp. 890-893 ◽  
Author(s):  
V. Karpman ◽  
F. Hansen ◽  
T. Huld ◽  
J. Lynov ◽  
H. Pécseli ◽  
...  
Keyword(s):  
Nonlinear Evolution ◽  
Modulational Instability ◽  
Whistler Waves

scholarly journals Nonlinear Evolution of Phase-mixed Alfvén Waves Towards Short Length Scales

2001 ◽  
Vol 203 ◽  
pp. 492-494
Author(s):  
M. Goossens ◽  
Y. Voitenko
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Wave Energy ◽  
Nonlinear Evolution ◽  
Second Harmonic ◽  
Short Length ◽  
Alfven Wave ◽  
Space Plasmas ◽  
Nonlinear Processes ◽  
Length Scales

We study two nonlinear processes that are efficient in the spectral redistribution of Alfvén wave energy - second harmonic generation, and scalar decay. Both processes transport the energy of AWs towards smaller scales and/or higher frequencies, and can accelerate the energization of space plasmas implied by recent SOHO observations.

Generation of whistler-mode signals in the presence of enhanced fluctuations in plasmas

1980 ◽  
Vol 23 (3) ◽  
pp. 483-494 ◽  
Author(s):  
M. Nambu ◽  
S. Bujarbarua ◽  
P. K. Shukla ◽  
K. H. Spatschek
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Electrostatic Field ◽  
Electromagnetic Waves ◽  
Space Plasmas ◽  
Whistler Waves ◽  
Whistler Mode ◽  
Circularly Polarized ◽  
Guide Magnetic Field

Acceleration of an electron by the electrostatic field of ion wave fluctuations is considered including the external magnetic field. It is found that an accelerated electron can emit unstable electromagnetic waves which propagate along the guide magnetic field. As an example, we discuss the generation of right-handed circularly polarized whistler waves. Application of our result to laboratory and space plasmas is examined.

scholarly journals Dromion solutions for nonlinear electron acoustic waves in space plasmas

2002 ◽  
Vol 9 (5/6) ◽  
pp. 463-475 ◽  
Author(s):  
S. S. Ghosh ◽  
A. Sen ◽  
G. S. Lakhina
Keyword(s):  
Acoustic Waves ◽  
Nonlinear Evolution ◽  
Two Dimensions ◽  
Space Plasmas ◽  
Ion Temperature ◽  
Polar Cap ◽  
Localized Solutions ◽  
Electron Acoustic Waves ◽  
Electron Acoustic

Abstract. Recent high resolution measurements of POLAR and FAST satellites have revealed two-dimensional coherent structures in the polar cap boundary layer (PCBL) region. Since the ion temperature is often observed to be greater than the electron temperature in this region, electron acoustic waves can exist as a normal mode of the plasma system. It is shown that the nonlinear evolution of such waves can be modelled by the coupled Davey-Stewartson I equations. These equations, which are a generalization of the nonlinear Schrödinger equation to two dimensions, admit exponentially localized solutions called dromions. A detailed parametric characterization of the regions of existence of such solutions is presented in the context of the PCBL region.

Nonlinear evolution of oblique whistler waves in radiation belts

2017 ◽  
Vol 362 (2) ◽  
Author(s):  
R. P. Sharma ◽  
P. Nandal ◽  
N. Yadav ◽  
Swati Sharma
Keyword(s):  
Nonlinear Evolution ◽  
Radiation Belts ◽  
Whistler Waves

Nonlinear effects associated with oblique whistler waves in space plasmas

2016 ◽  
Vol 23 (10) ◽  
pp. 102905
Author(s):  
R. P. Sharma ◽  
P. Nandal ◽  
N. Yadav ◽  
R. Uma
Keyword(s):  
Nonlinear Effects ◽  
Space Plasmas ◽  
Whistler Waves

scholarly journals Alfvén waves in space and astrophysical dusty plasmas

2014 ◽  
Vol 21 (2) ◽  
pp. 405-416 ◽  
Author(s):  
V. Jatenco-Pereira ◽  
A. C.-L. Chian ◽  
N. Rubab
Keyword(s):  
Nonlinear Evolution ◽  
Dusty Plasmas ◽  
Alfven Waves ◽  
Space Plasmas ◽  
Alfvén Waves ◽  
Stellar Winds ◽  
Astrophysical Plasmas ◽  
Star Forming ◽  
Star Forming Regions ◽  
Kinetic Alfvén Waves

Abstract. In this paper, we present some results of previous works on Alfvén waves in a dusty plasma in different astrophysical and space regions by taking into account the effect of superthermal particles on the dispersive characteristics. We show that the presence of dust and superthermal particles sensibly modify the dispersion of Alfvén waves. The competition between different damping processes of kinetic Alfvén waves and Alfvén cyclotron waves is analyzed. The nonlinear evolution of Alfvén waves to chaos is reviewed. Finally, we discuss some applications of Alfvén waves in the auroral region of space plasmas, as well as stellar winds and star-forming regions of astrophysical plasmas.

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