Non-linear coherent structures of kinetic Alfvén waves in plasmas with non-Maxwellian electrons and their relevance for space plasmas

2017 ◽  
Vol 24 (4) ◽  
pp. 042904 ◽  
Author(s):  
Nirupama Devi ◽  
Rumi Chaharia
Keyword(s):  
Coherent Structures ◽  
Alfven Waves ◽  
Space Plasmas ◽  
Alfvén Waves ◽  
Non Linear ◽  
Kinetic Alfvén Waves

Nonlinear coupling between Alfvén and fast magnetosonic waves

2003 ◽  
Vol 69 (3) ◽  
pp. 183-185 ◽  
Author(s):  
G. BRODIN ◽  
L. STENFLO ◽  
P. K. SHUKLA
Keyword(s):  
Wave Propagation ◽  
Alfven Waves ◽  
Alfven Wave ◽  
Space Plasmas ◽  
Alfvén Waves ◽  
Nonlinear Coupling ◽  
Energy Transformation ◽  
Magnetohydrodynamic Waves ◽  
Non Linear

Energy transformation between fast magnetosonic waves and Alfvén waves is considered. It is shown that the efficiency of this process can be significantly enhanced if the Alfvén wave propagation directions are appropriately chosen. The relevance of our investigation to the non-linear excitation of magnetohydrodynamic waves in space plasmas is discussed.

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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