Results 31 to 40 of about 32,327 (219)

On wave turbulence in MHD [PDF]

open access: yesNonlinear Processes in Geophysics, 2001
We describe the fundamental differences between weak (wave) turbulence in incompressible and weakly compressible MHD at the level of three-wave interactions. The main difference is in the structure of the resonant manifolds and the mechanisms of redistribution of spectral densities along the applied magnetic field B0. Similar to pure acoustic waves, a
S. Galtier   +3 more
openaire   +5 more sources

On the validity of nonlinear Alfvén resonance in space plasmas [PDF]

open access: yes, 2008
Aims. In the approximation of linear dissipative magnetohydrodynamics (MHD), it can be shown that driven MHD waves in magnetic plasmas with high Reynolds number exhibit a near resonant behaviour if the frequency of the wave becomes equal to the local ...
Arregui   +35 more
core   +3 more sources

MHD wave modes resolved in fine-scale chromospheric magnetic structures [PDF]

open access: yes, 2015
Within the last decade, due to significant improvements in the spatial and temporal resolution of chromospheric data, magnetohydrodynamic (MHD) wave studies in this fascinating region of the Sun's atmosphere have risen to the forefront of solar physics ...
Jess, D. B., Verth, G.
core   +2 more sources

Excitation of kinetic Alfvén turbulence by MHD waves and energization of space plasmas [PDF]

open access: yesNonlinear Processes in Geophysics, 2004
There is abundant observational evidence that the energization of plasma particles in space is correlated with an enhanced activity of large-scale MHD waves.
Y. Voitenko, Y. Voitenko, M. Goossens
doaj  

Theoretical modeling of propagation of magneto-acoustic waves in magnetic regions below sunspots [PDF]

open access: yes, 2008
We use 2D numerical simulations and eikonal approximation, to study properties of MHD waves traveling below the solar surface through the magnetic structure of sunspots. We consider a series of magnetostatic models of sunspots of different magnetic field
A. Kosovichev   +24 more
core   +1 more source

MHD waves within noncommutative Maxwell theory

open access: yesPhysics Letters B, 2007
7 pages, 4 figures, references added with comments, appear in Phys.Lett ...
Bourouaine, S., Benslama, A.
openaire   +4 more sources

A three dimensional magnetohydrodynamic pulse in a transversely inhomogeneous medium [PDF]

open access: yes, 2002
Interaction of impulsively generated MHD waves with a one-dimensional plasma inhomogeneity, transverse to the magnetic field, is considered in the three-dimensional regime.
Nakariakov, V. M. (Valery M.)   +1 more
core   +2 more sources

Ray Tracing of MHD Rossby Waves in the Solar Tachocline: Meridional Propagation and Implications for the Solar Magnetic Activity

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Rossby waves have been recently recognised for their role in the large-scale spatio-temporal organisation of the solar magnetic activity. Here, we study the propagation of magnetohydrodynamic Rossby waves in a thin layer, representing the solar ...
André S. W. Teruya   +2 more
doaj   +1 more source

A mode filter for plasma waves in the Hall-MHD approximation [PDF]

open access: yesAnnales Geophysicae, 1999
A filter method is presented which allows a qualitative and quantitative identification of wave modes observed with plasma experiments on satellites.
C. Vocks   +4 more
doaj   +1 more source

On MHD waves, fire-hose and mirror instabilities in anisotropic plasmas [PDF]

open access: yesNonlinear Processes in Geophysics, 2007
Temperature or pressure anisotropies are characteristic of space plasmas, standard magnetohydrodynamic (MHD) model for describing large-scale plasma phenomena however usually assumes isotropic pressure. In this paper we examine the characteristics of MHD
L.-N. Hau, B.-J. Wang
doaj  

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