scholarly journals Nonlinear coupling of Alfvén waves with widely different cross-field wavelengths in space plasmas

2005 ◽  
Vol 110 (A10) ◽  
Author(s):  
Yuriy M. Voitenko
Keyword(s):  
Alfven Waves ◽  
Space Plasmas ◽  
Alfvén Waves ◽  
Nonlinear Coupling

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 Intermittent chaos driven by nonlinear Alfvén waves

2004 ◽  
Vol 11 (5/6) ◽  
pp. 691-700 ◽  
Author(s):  
E. L. Rempel ◽  
A. C.-L. Chian ◽  
A. J. Preto ◽  
S. Stephany
Keyword(s):  
Dynamical Systems ◽  
Periodic Orbits ◽  
Systems Approach ◽  
Alfven Waves ◽  
Space Plasmas ◽  
Alfvén Waves ◽  
Unstable Periodic Orbits ◽  
Phase Dynamics ◽  
Intermittent Chaos

Abstract. We investigate the relevance of chaotic saddles and unstable periodic orbits at the onset of intermittent chaos in the phase dynamics of nonlinear Alfvén waves by using the Kuramoto-Sivashinsky (KS) equation as a model for phase dynamics. We focus on the role of nonattracting chaotic solutions of the KS equation, known as chaotic saddles, in the transition from weak chaos to strong chaos via an interior crisis and show how two of these unstable chaotic saddles can interact to produce the plasma intermittency observed in the strongly chaotic regimes. The dynamical systems approach discussed in this work can lead to a better understanding of the mechanisms responsible for the phenomena of intermittency in space plasmas.

Alfven waves in space plasmas: dispersive and kinetic effects

2001 ◽  
Vol 7 (2s) ◽  
pp. 67-73
Author(s):  
Yu. Voitenko ◽  
◽  
M. Goossens ◽  
A.K. Yukhimuk ◽  
A.D. Voitsekhovska ◽  
...  
Keyword(s):  
Alfven Waves ◽  
Space Plasmas ◽  
Alfvén Waves ◽  
Kinetic Effects
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