Results 21 to 30 of about 716 (136)
Coupling Between Alfvén Wave and Kelvin–Helmholtz Waves in the Low Latitude Boundary Layer
Frontiers 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
Ion‐Scale Kinetic Alfvén Turbulence: MMS Measurements of the Alfvén Ratio in the Magnetosheath
Geophysical Research Letters, 2018 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
Ion acceleration by parallel propagating nonlinear Alfvén wave packets in a radially expanding plasma [PDF]
Nonlinear 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
Alfven wave elgenmode and Alfven resonance.
Kakuyūgō kenkyū, 1985 The main purpose of this article is to introduce as simply as possible the current topics concerned with the Alfven waves ; new MHD surface waves, other eigenmodes, and the Alfven resonance. These play an important role for heating plasma by applying an rf field of ion cyclotron range of frequency to a plasma column.
openaire +2 more sources
Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.Abstract Saturn's Kilometric Radiation (SKR) is a powerful non‐thermal radio auroral emission produced by the Cyclotron Maser Instability (CMI), which generates waves close to the local cyclotron frequency in a highly magnetized plasma from mildly relativistic electrons.
B. Collet, L. Lamy, Y. Kasaba, N. Andre
wiley +1 more source
Spiky Bursts of Energetic Electron Beams Upstream of Nonstationary Quasi‐Perpendicular Shocks
Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.Abstract Energetic electron beams play a crucial role in collisionless shocks by driving upstream plasma waves and providing seed populations for diffusive shock acceleration. However, the processes responsible for their generation at quasi‐perpendicular shocks remain poorly understood.
Ao Guo +4 more
wiley +1 more source
Alfvén Wave Conversion to Low Frequency Fast Magnetosonic Waves in Magnetar Magnetospheres
The Astrophysical JournalRapid shear motion of magnetar crust can launch Alfvén waves into the magnetosphere. The dissipation of the Alfvén waves has been theorized to power the X-ray bursts characteristic of magnetars.
Dominic Bernardi +2 more
doaj +1 more source
The Astrophysical Journal, 2023 In particular during the descending phase of the solar cycle, Alfvén waves in the high-speed solar wind streams are a major form of interplanetary disturbances.
Lei Dai +8 more
doaj +1 more source
Generation of Falling‐Tone Whistler‐Mode Chorus Waves in the Earth's Magnetosphere
Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.Abstract Chorus waves are intense whistler‐mode emissions in space that play a key role in regulating energetic electron dynamics in the hazardous radiation belt. While rising‐tone chorus has been extensively studied, the generation mechanism of falling‐tone chorus remains a long‐standing problem.
Huayue Chen +6 more
wiley +1 more source
The Astrophysical JournalWe have studied the propagation of inertial Alfvén waves through parallel gradients in the Alfvén speed using the Large Plasma Device at the University of California, Los Angeles. The reflection and transmission of Alfvén waves through inhomogeneities in
Garima Joshi +6 more
doaj +1 more source