Alfvén wave
Alfvén wave boundary condition for responsive magnetosphere ionosphere coupling
... incident Alfvén wave described by E xi and j zi which could be set up by processes in the distant ...reflected Alfvén waves. Since the reflected wave is modified by the ionospheric conductivity, ...
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Ion acceleration by parallel propagating nonlinear Alfvén wave packets in a radially expanding plasma
... propagating Alfvén waves in a radially ex- panding plasma is performed by using a kinetic-fluid model (the Vlasov–MHD ...the Alfvén waves and the radial evolution of the velocity distribution function (VDF) ...
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Particle in cell simulations of circularly polarised Alfvén wave phase mixing: A new mechanism for electron acceleration in collisionless plasmas
... polarised Alfvén waves with one dimensional plasma density inhomogeneities transverse to the uniform magnetic field (phase mixing) in collisionless plas- ...the Alfvén wave front, due to the di ff ...
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Weak Alfvén wave turbulence revisited
... Weak Alfv´enic turbulence in a periodic domain is considered as a mixed state of Alfv´en waves interacting with the two-dimensional (2D) condensate. Unlike in standard treatments, no spectral continuity between the two ...
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On the coupling of fast and shear Alfvén wave modes by the ionospheric Hall conductance
... waves with wave vectors in the latitudinal direction, in the plane of the dipole field, differ from those in the longitudi- nal direction. Sciffer and Waters (2002) and Sciffer et al. (2004) have analyzed the ...
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Alfvén Wave heating of the solar chromosphere : 1 5D models
... There is therefore compelling observational and theoretical evidence that a significant fraction of the heating requirements of the upper chromosphere, and possibly the quiet corona, could be accounted for through the ...
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Phase mixing of nonlinear visco resistive Alfvén waves
... linearly-polarised Alfvén waves propagating in a direction parallel to the magnetic field, and found that the transverse behaviour of the Alfvén wave was identical when comparing the linear and ...
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Alfvén waves in low mass star forming regions
... an Alfvén wave propagating parallel to the magnetic field; while the short-wavelength compressional waves, which propagate perpendicular to the field, are damped closest to the ...
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The broadband excitation of 3D Alfvén resonances in a MHD waveguide
... minimum Alfvén frequencies correspond to the toroidal and poloidal frequencies, ...the Alfvén fre- quency matches the driving ...the Alfvén frequency matches the driving frequency if the polarization ...
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Damping of Alfvén eigenmodes in complicated tokamak and stellarator geometries
... of Alfvén eigenmode growth rates contain signifi- cant uncertainty, with damping component estimates responsible for a major com- ponent of this uncertainty ...observed Alfvén wave ...deleterious ...
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The theoretical foundation of 3D Alfvén resonances : time dependent solutions
... the Alfvén and fast-mode ...the Alfvén frequency matches the driving ...the Alfvén wave, or locally 2-D resonant regions which have a similar ...
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Investigating the damping rate of phase mixed Alfvén waves
... mixed Alfvén waves at observed frequencies are unlikely to play a role in coronal ...standing Alfvén wave will trigger the Kelvin- Helmholtz instability at its antinode, which could lead to a ...
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Collisional dissipation of Alfvén waves in a partially ionised solar chromosphere
... The numerical simulations were performed in the non-ideal MHD approximation with an additional term relating to the Cowling conductivity in the generalised Ohm’s law (Eq. (16)). Previous work on Alfvén wave ...
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Alfvén waves in space and astrophysical dusty plasmas
... dust Alfvén waves were investigated by Verheest (1994), where the dust dynamics is modeled by a number of cold, highly negatively charged and very massive flu- ids, in addition to electrons and protons; he showed ...
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Distribution of equatorial Alfvén velocity in the magnetosphere: a statistical analysis of THEMIS observations
... MHD wave theory describes that the inhomoge- neity in plasma density and magnetic fields enables the shear Alfvén mode and fast mode waves to be coupled to each other (Chen and Hasegawa 1974; Southwood ...
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Stimulated emission of fast Alfvén waves within magnetically confined fusion plasmas
... fast Alfvén wave has a frequency of 18ω cα , and we set the periodic simulation domain length to 120 ...the wave number are determined by the cold plasma dispersion relation [40] at this ...imposed ...
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Solar coronal electron heating by short wavelength dispersive shear Alfvén waves
... SWDSA wave-electron interactions, since the SWDSA waves have parallel electric fi elds and fi nite density fl ...powerful Alfvén waves observed in the corona of the Sun [ 20, 23 ] play a very important role in ...
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Reduced magnetohydrodynamic equations with coupled Alfvén and sound wave dynamics
... terfering wave structures; the finite conductivity additionally introduces energy dissipation in the Alfvén wave ...ated Alfvén waves via a negative-energy “feedback ...Because Alfvén ...
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Phase mixing of nonlinear Alfvén waves
... the Alfvén wave energy decays to zero at nearly the same rate when the driver is switched ...for Alfvén waves to travel from one footpoint to another and so does little to enhance the phase ...the ...
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Contribution of observed multi frequency spectrum of Alfvén waves to coronal heating
... modest wave energy input from one footpoint and sec- ondly the other domain boundary is not linetied, thus we do not have reflection of the waves, and standing modes do not settle ...
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