Results 31 to 40 of about 11,735 (263)

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

Behavior of Torsional Alfven Waves and Field Line Resonance on Rotating Magnetars [PDF]

open access: yes, 2005
Torsional Alfven waves are likely excited with bursts in rotating magnetars. These waves are probably propagated through corotating atmospheres toward a vacuum exterior.
Kojima, Yasufumi, Okita, Taishi
core   +2 more sources

Alfven wave studies on PRETEXT [PDF]

open access: yesAIP Conference Proceedings, 1985
The properties of low frequency Alfven waves in hot, magnetically confined plasmas are quite unlike those in homogeneous media. Extensive theoretical studies have uncovered the Alfven continuum along with global Alfven eigenmodes (GAE). It has been suggested that such modes may be good candidates for rf heating below the ion cyclotron frequency.
Valanju, P. M.   +8 more
openaire   +2 more sources

The role of torsional Alfven waves in coronal heating [PDF]

open access: yes, 2009
In the context of coronal heating, among the zoo of MHD waves that exist in the solar atmosphere, Alfven waves receive special attention. Indeed, these waves constitute an attractive heating agent due to their ability to carry over the many different ...
Antiochos   +40 more
core   +1 more source

Self-similar evolution of Alfven wave turbulence [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2017
Summary: We study self-similar solutions of the kinetic equation for MHD wave turbulence derived in [\textit{S. Galtier} et al., ``A weak turbulence theory for incompressible magnetohydrodynamics'', J. Plasma Phys. 63, No. 5, 447--488 (2000; \url{doi:10.1017/s0022377899008284})].
N K Bell   +3 more
openaire   +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

Evolution of Alfven wave-driven solar winds to red giants [PDF]

open access: yes, 2007
In this talk we introduce our recent results of global 1D MHD simulations for the acceleration of solar and stellar winds. We impose transverse photospheric motions corresponding to the granulations, which generate outgoing Alfven waves. The Alfven waves
Axford   +9 more
core   +1 more source

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

Torsional Alfv\'en waves in solar partially ionized plasma: effects of neutral helium and stratification

open access: yes, 2013
Ion-neutral collisions may lead to the damping of Alfven waves in chromospheric and prominence plasmas. Neutral helium atoms enhance the damping in certain temperature interval, where the ratio of neutral helium and neutral hydrogen atoms is increased ...
Khodachenko, M. L.   +2 more
core   +1 more source

Experimental Generation of Plasma Alfven Waves

open access: yesPhysical Review Letters, 1959
Alfven has postulated the existence of hydromagnetic waves to explain certain sunspot phenomena. An experiment is described in which an effort was made to generate and detect such waves. (A.C.)
Allen, T.K.   +3 more
openaire   +2 more sources

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