Results 21 to 30 of about 1,200 (139)
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
Coronal heating and wind acceleration by nonlinear Alfvén waves – global simulations with gravity, radiation, and conduction [PDF]
Nonlinear Processes in Geophysics, 2008 We review our recent results of global one-dimensional (1-D) MHD simulations for the acceleration of solar and stellar winds. We impose transverse photospheric motions corresponding to the granulations, which generate outgoing Alfvén waves.
T. K. Suzuki
doaj
Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.Abstract Discrete energy bands of ion fluxes, typically organized in velocity with equal separations, have been frequently observed in Jupiter's magnetosphere either in association with Galilean moons or in regions far from their influence. Here, we focus on the latter type and propose that these bands are manifestations of bounce‐phase structuring ...
Ya‐Ze Wu +5 more
wiley +1 more source
Polytropic Index and Thermodynamic Behavior of the Central Plasma Sheet Near Lunar Distances
Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.Abstract In addition to making near‐Earth observations, the THEMIS/ARTEMIS mission is uniquely positioned at lunar distance, in the deep magnetotail, reaching distances of 60 RE ${R}_{E}$ and further. This vantage point allows ARTEMIS to access the plasma sheet and measure entropy evolution across convective channels, plasma flow gradients ...
Ephrem Tesfaye Desta +2 more
wiley +1 more source
LARGE AMPLITUDE ALFVÉN WAVES IN MAGNETOHYDRYNAMICS CONSIDERING INERTIAL TERMS IN THE OHM’S LAW
Anales (Asociación Física Argentina)Incompressible Alfvén waves have been detected in a variety of space and astrophysical plasmas. Some of these plasmas can be studied within the framework of magnetohydrodynamics with extended conditions.
P. A. Sallago
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Alfvén waves in the magnetosphere generated by shock wave/plasmapause interaction
Solar-Terrestrial Physics, 2019 We study Alfvén waves generated in the magnetosphere during the passage of an interplanetary shock wave. After shock wave passage, the oscillations with typical Alfvén wave dispersion have been detected in spacecraft observations inside the magnetosphere.
Leonovich A.S. +3 more
doaj +1 more source