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

