The Alfv´en Wave
The Alfv´en resonator revisited
... the Alfv´en wave, for typical condi- tions, is expected to be tens or more times larger than that for the second instability as based on the Alfv´en wave reflection from the ...
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Dynamics of Alfv´en waves in the night-side ionospheric Alfv´en resonator at mid-latitudes
... Therefore, most of the energy of the waves trapped by the resonator is concentrated close to the central part of the res- onator, i.e. at the heights of the F2-layer. This is evident from Fig 2, where J z /J 0 ...
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The Alfv´en edge in asymmetric reconnection
... the Alfv´en velocity is much higher in the plasma on one side of the current sheet than the other, an Alfv´en edge is ...high Alfv´en velocity side of the cur- rent sheet. The ...
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Alfv´en wave interaction with inhomogeneous plasmas: acceleration and energy cascade towards small-scales
... to wave propagation, one re- alizes that other elements inherent to the medium must be invoked in order to form and maintain such ...stochastic wave/particle in- teraction has been advocated (Bryant et ...
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Different Alfv´en wave acceleration processes of electrons in substorms at 4–5 and 2–3 radial distance
... transient Alfv´en waves in optical auroral phenomena in light of this study? The main transient Alfv´enic effects in active aurora are motion and brightenings of auroral ...the Alfv´en ...
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Toroidal and poloidal Alfv´en waves with arbitrary azimuthal wave numbers in a finite pressure plasma in the Earth’s magnetosphere
... toroidal Alfv´en waves in the Pc 4-5 range, which showed characteristic properties of a localized reso- nance described in ...the wave across L-shells, toroidal polarization, and a phase change by ...
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Alfv´en wave filamentation and dispersive phase mixing in a high-density channel: Landau fluid and hybrid simulations
... on Alfv´en wave filamentation, ...of Alfv´en filaments can be significantly broadened in the presence of high or low density channels of relatively small amplitude (possibly randomly ...
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Recent progress in nonlinear kinetic Alfv´en waves
... particles in solar activities, relativistic energetic particles in active galactic nuclei and other compact objects, and ener- getic cosmic ray particles permeating through the vast cos- mic space. Both theory and ...
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Field-aligned structure of poloidal Alfv´en waves in a finite pressure plasma
... the Alfv´en wave propagation in a finite-β plasma ...fundamental wave harmonics, but it usually gives correct qualitative results for them, so it can be used for heuristic ...the wave ...
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Magnetic-inclination effects in the spectral resonance structure of the ionospheric Alfv´en resonator
... 2 (2) As seen, B r is direct proportional to local B φ since this is the driving force for excitation of IAR, representing the leakage to the ionosphere above the observation point. In the imagi- nary part at the ...
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Parallel electric field in the auroral ionosphere: excitation of acoustic waves by Alfv´en waves
... static wave producing strong parallel electric field (at least at the altitudes ∼1000 km) is similar to the ion acoustic rather than the EIC ...the Alfv´en wave with finite amplitude and ...
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Excitation of Alfv´en waves by modulated HF heating of the ionosphere, with application to FAST observations
... HF wave energy is absorbed in iono- sphere; (ii) there exists a dc electric field in the layer of ...of Alfv´en wave excitation is as ...HF wave is trans- formed into the heating of the ...
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Polarization properties of standing shear Alfv´en waves in non-axisymmetric background magnetic fields
... azimuthal wave number) and poloidal (large azimuthal wave number) guided Alfv´en wave modes ...the Alfv´en wave mode branches may be more easy to excite and may ...
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Alfv´en ship waves: high- mULF pulsations in the magnetosphere generated by a moving plasma inhomogeneity
... the Alfv´en wave gen- eration by the moving plasma ...the wave appears just af- ter the source ...the wave propagation coincides with the direction of the source movement, the ...
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Landau-fluid simulations of Alfv´en-wave instabilities in a warm collisionless plasma
... 128 or 256 collocation points are used. The initial condi- tions are taken as a right or left-hand polarized wave. Ex- cept when comparing with previously published growth rate curves where it is necessary to add ...
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Spatio-temporal structure of a poloidal Alfv´en wave detected by Cluster adjacent to the dayside plasmapause
... ULF wave fields exhibit a rather complex spatial struc- ture, as described ...ULF wave activity can be detected regularly in this region of interest near the extreme values of poloidal and toroidal field ...
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A two-fluid model describing the finite-collisionality, stationary Alfv´en wave in anisotropic plasma
... Discussion Wave reflection at a conducting boundary is one poten- tially important effect in both the auroral ionosphere and a laboratory-experiment that remains unaddressed by the present ...model. Wave ...
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Spatial localization and azimuthal wave numbers of Alfv´en waves generated by drift-bounce resonance in the magnetosphere
... azimuthal wave numbers m of poloidal Alfv´en waves generated by energetic particles in the magnetosphere are studied in the ...the wave localization across magnetic ...poloidal wave ...
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On the existence of Alfv´en waves in the terrestrial foreshock
... 1 Space & Atmospheric Physics Group, Blackett Laboratory, Imperial College, Prince Consort Rd, London SW7 2BW, UK 2 CESR/ CNRS, 9, Avenue du Colonel Roche F-31028 Toulouse Cedex 4, France Received: 29 November 2002 – ...
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Propagation of Alfv´en waves in the magnetotail during substorms
... In conclusion, the results presented here have illustrated the role of MHD wave propagation in the tail in two different situations. In the Harris sheet model including the boundary layers, the simulations show ...
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