Results 31 to 40 of about 10,009 (174)

Nonlinear Alfvén wave dynamics at a 2D magnetic null point: ponderomotive force [PDF]

open access: yes, 2013
Context: In the linear, β = 0 MHD regime, the transient properties of magnetohydrodynamic (MHD) waves in the vicinity of 2D null points are well known.
Alfvén   +33 more
core   +2 more sources

Penetration to the Earth's surface of standing Alfvén waves excited by external currents in the ionosphere [PDF]

open access: yesAnnales Geophysicae, 1996
The problem of boundary conditions for monochromatic Alfvén waves, excited in the magnetosphere by external currents in the ionospheric E-layer, is solved analytically. Waves with large azimuthal wave numbers m»1 are considered.
A. S. Leonovich, V. A. Mazur
doaj   +1 more source

Alfvén 'resonance' reconsidered: Exact equations for wave propagation across a cold inhomogeneous plasma [PDF]

open access: yes, 1994
Previous discussions of Alfvén wave propagation across an inhomogeneous plasma predicted that shear Alfvén waves become singular (resonant) at the omega = k(z)v(A) layer and that there is a strong wave absorption at this layer giving localized ion ...
Bellan, P. M.
core   +2 more sources

Seismology of curved coronal loops with vertically polarised transverse oscillations [PDF]

open access: yes, 2006
Aims. Using a model of vertically polarised fast magnetoacoustic waves in curved coronal loops, the method of coronal seismology is applied to observations of transverse loop oscillations. Methods.
Foullon, C. (Claire)   +2 more
core   +1 more source

Coupling Between Alfvén Wave and Kelvin–Helmholtz Waves in the Low Latitude Boundary Layer

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The Kelvin–Helmholtz (KH) instability of magnetohydrodynamic surface waves at the low latitude boundary layer is examined using both an eigenfrequency analysis and a time-dependent wave simulation.
E.-H. Kim, J. R. Johnson, K. Nykyri
doaj   +1 more source

Turbulence in the Solar Corona [PDF]

open access: yes, 2007
The solar corona has been revealed in the past decade to be a highly dynamic nonequilibrium plasma environment. Both the loop-filled coronal base and the extended acceleration region of the solar wind appear to be strongly turbulent, but direct ...
Cranmer, Steven R.
core   +3 more sources

Nonlinear resonant absorption of fast magnetoacoustic waves in strongly anisotropic and dispersive plasmas [PDF]

open access: yes, 2009
The nonlinear theory of driven magnetohydrodynamics (MHD) waves in strongly anisotropic and dispersive plasmas, developed for slow resonance by Clack and Ballai [Phys. Plasmas 15, 2310 (2008)] and Alfvén resonance by Clack et al. [Astron. Astrophys. 494,
Braginskii S. I.   +6 more
core   +2 more sources

Ion acceleration by parallel propagating nonlinear Alfvén wave packets in a radially expanding plasma [PDF]

open access: yesNonlinear Processes in Geophysics, 2014
The numerical simulation of the nonlinear evolution of the parallel propagating Alfvén waves in a radially expanding plasma is performed by using a kinetic-fluid model (the Vlasov–MHD model). In our study, both the nonlinear evolution of the Alfvén waves
Y. Nariyuki   +3 more
doaj   +1 more source

Rapid dissipation in a current sheet driven by footpoints motions [PDF]

open access: yes, 2006
Context.Wave energy dissipation by viscous and resistive damping in magnetic coronal plasmas is addressed. A two and one half dimensional, line-tied magnetic channel is considered whose footpoints are disturbed by buffeting motions of the photosphere ...
Craig, Ian J.D., Fruit, G.
core   +4 more sources

Ion‐Scale Kinetic Alfvén Turbulence: MMS Measurements of the Alfvén Ratio in the Magnetosheath

open access: yesGeophysical Research Letters, 2018
Turbulence in the Earth's magnetosheath at ion kinetic scales is investigated with the magnetospheric multiscale spacecraft. Several possibilities in the wave paradigm have been invoked to explain plasma turbulence at ion kinetic scales such as kinetic ...
O. W. Roberts   +12 more
doaj   +1 more source

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