Results 41 to 50 of about 716 (136)
Alfvén wave evolution into magnetic filaments in 3-D space plasma
Earth, Planets and Space, 2020 Nonlinearities in space and astrophysical plasmas generate a set of magnetic filaments or bundles that have an incompressible sense of fluctuations and propagate highly obliquely to the mean magnetic field.
Horia Comişel +2 more
doaj +1 more source
Self-similar evolution of Alfven wave turbulence [PDF]
Journal 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
Space Weather, Volume 24, Issue 8, August 2026.Abstract Auroral precipitation plays a key role in coupling the Magnetosphere–Ionosphere–Thermosphere system by modifying ionospheric conductance, currents, atmospheric heating, and upper‐atmospheric dynamics. Leveraging 17 years of electron spectrum data from the Defense Meteorological Satellite Program (DMSP), we developed a Machine Learning‐based ...
V. Sai Gowtam, Hyunju Connor
wiley +1 more source
Force-free Wave Interaction in Magnetar Magnetospheres: Computational Modeling in Axisymmetry
The Astrophysical JournalCrustal quakes of highly magnetized neutron stars can disrupt their magnetospheres, triggering energetic phenomena like X-ray and fast radio bursts. Understanding plasma wave dynamics in these extreme environments is vital for predicting energy transport
Jens F. Mahlmann +2 more
doaj +1 more source
The Effect of the Parametric Decay Instability on the Morphology of Coronal Type III Radio Bursts
The Astrophysical Journal Letters, 2023 The nonlinear evolution of Alfvén waves in the solar corona leads to the generation of Alfvénic turbulence. This description of the Alfvén waves involves parametric instabilities where the parent wave decays into slow mode waves giving rise to density ...
Chaitanya Prasad Sishtla +6 more
doaj +1 more source
Contributions to Geophysics and Geodesy, 2022 Versus the theory of fully stochastically mechanism of geomagnetic jerks based on the buoyant force driven Quasi-Geostrophic (QG) dynamo, the torsional waves in realistic condition of the Earth's core evolve in the intradecadal time scales.
Mohsen LUTEPHY +2 more
doaj +1 more source
Beyond the Electrostatic Approach: Numerical Simulations of Martian Ionospheric Irregularities
AGU Advances, Volume 7, Issue 5, August 2026.Abstract Numerical simulations play an essential role in the study of ionospheric irregularities. In the past few decades, electrostatic simulations have successfully simulated the nonlinear evolution of terrestrial ionospheric irregularities. However, the Mars Atmosphere and Volatile EvolutioN (MAVEN) observations reveal that the Martian ionospheric ...
Konghan Jiang, Jiuhou Lei, Maodong Yan
wiley +1 more source
Foreshock Ion Properties at Earth's Bow Shock: Dependence on Upstream Conditions and Shock Geometry
Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.Abstract Solar wind ion reflection at collisionless shocks regulates foreshock plasma dynamics, yet the quantitative dependence of foreshock ion properties on upstream and shock‐related parameters remains unclear, causing difficulties in predicting foreshock disturbances.
Runyi Liu +4 more
wiley +1 more source
Second-order perturbations in Alfvén waves in cold plasma approximation
Solar-Terrestrial Physics, 2019 The second-order amplitude perturbations driven by Alfvén waves are studied. Equations for such second-order perturbations are derived and their solutions are found. The second-order perturbations are shown to be generated by the magnetic pressure of the
Dmitrienko I.S.
doaj +1 more source
On the Escape of Low-frequency Waves from Magnetospheres of Neutron Stars
The Astrophysical Journal, 2023 We study the nonlinear decay of the fast magnetosonic (fms) into the Alfvén waves in relativistic force-free magnetohydrodynamics. The work has been motivated by models of pulsar radio emission and fast radio bursts (FRBs), in which the emission is ...
Ephim Golbraikh, Yuri Lyubarsky
doaj +1 more source