Results 71 to 80 of about 678,398 (176)

Alfvén Waves at Mars [PDF]

The solar wind upstream of Mars\u27s bow shock can be described in terms of Alfvénic turbulence, with an incompressible energy cascade rate of $10^{-17}$ J m$^{-3}$ s$^{-1}$ at magnetohydrodynamics (MHD) scales.
Fowler, Christopher M., Halekas, Jasper S., Espley, Jared R., DiBraccio, Gina A., Romanelli, Norberto   +4 more
core   +1 more source

Poloidal Field Line Resonances Driven by a Fast Wave

Geophysical Research Letters
We present numerical simulations of the excitation of resonant poloidal Alfvén waves. The resulting Alfvén waves could be loosely described as “high‐m” (m is the azimuthal wave number) in as much as the azimuthal scale of the wave is much less than the ...
Andrew Wright, Thomas Elsden, Alexander Degeling, Ian R. Mann, Louis Ozeke, Timothy Yeoman, Jasmine Sandhu, Kazue Takahashi   +7 more
doaj   +1 more source

Coupled Thermosphere–Ionosphere–Plasmasphere Disturbances During the April 2023 Geomagnetic Storm: A Ground‐Based Multiparametric Study Across the American and European Sectors

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract The April 2023 geomagnetic storm significantly impacted the thermosphere‐ionosphere system, particularly over South America and midlatitude regions. This study analyzes ground‐based geomagnetic and ionospheric data, alongside Swarm satellite measurements, to investigate the physical mechanisms driven by intense solar wind energy input ...
L. Perrone, M. Regi, G. Carnevale, C. Scotto, D. Sabbagh, A. Ippolito, A. Del Corpo, D. Sciarra, B. Heilig   +8 more
wiley   +1 more source

Nonlinear evolution of torsional Alfvén waves

, 2012
Aims. We study the efficiency of the energy transfer to shorter scales in the field-aligned direction – the parallel nonlinear cascade – that accompanies the propagation of torsional Alfvén waves along open magnetic fields in the solar and stellar ...
V. M. Nakariakov, Vasheghani Farahani, S., Nakariakov, V.M., Verwichte, Erwin, Vasheghani Farahani, Soheil, Verwichte, E. (Erwin), S. Vasheghani Farahani, T. Van Doorsselaere, E. Verwichte, Van Doorsselaere, Tom, Nakariakov, V. M. (Valery M.)   +10 more
core   +1 more source

On resistive dissipation of Alfvén waves in an isothermal atmosphere

International Journal of Mathematics and Mathematical Sciences, 1996
In this paper we will examine the reflection and dissipation of Alfvén waves, resulting from a uniform vertical magnetic field, in an inviscid, resistive and isothermal atmosphere.
H. Y. Alkahby
doaj   +1 more source

Propagation Dynamics of Fast Electron Beam and Its Electron Cyclotron Maser Emission

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract Fast electron beams (FEBs) and coherent radio bursts both are very common plasma activity phenomena in the cosmos. The electron cyclotron maser (ECM) instability driven by FEBs trapped in magnetic fields can directly amplify radio wave radiations.
Ling Chen, Dejin Wu, Jianfei Tang, Guoqing Zhao   +3 more
wiley   +1 more source

Parametric excitation of Alfvén and acoustic waves [PDF]

, 2017
The nonlinear interaction between two Alfvén waves and a sound wave is studied, using the normal-mode approach. This leads, in a simple way to a set of coupled equations, and consequently to a dispersion relation for the waves under consideration.
Hung, Nguyen The
core  

Attenuation of Alfvén waves in straight and curved coronal slabs

, 2007
Aims.We consider impulsively generated Alfvén waves in coronal loops to investigate the role of energy leakage on wave attenuation, which includes lateral leakage, leakage into dense photospheric regions and nonlinear driving of magnetosonic waves.
S. K. Solanki, Solanki, S., K. Murawski, Gruszecki, M., L. Ofman, Murawski, K., M. Gruszecki, Ofman, L.   +7 more
core   +1 more source

The Energy Content of Alfvén Waves in the Stratified Solar Atmosphere

The Astrophysical Journal
Alfvén waves propagating in a vertically stratified plasma, such as those traveling from the solar photosphere to the corona, are partially reflected due to the gradient in the Alfvén speed.
Roberto Soler
doaj   +1 more source

Two-Mode Structure of Alfvén Surface Waves

, 1982
The Alfvén surface waves propagating along a viscous conducting fluid-vacuum interface have been studied. It is found that besides the "ordinary" Alfvén surface waves, modified by viscosity effects, the interface can support a second mode which is the ...
Uberoi, C, Somasundaram, K
core