Results 51 to 60 of about 4,205 (236)
Global Evolution, Energetics, and Origins of Auroral Streamers
Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.Abstract An auroral streamer—a usually meridionally aligned, arc‐like feature that extend across the auroral oval. We performed a high‐resolution global magnetohydrodynamic simulation to characterize the evolution of streamers and their coupling to magnetotail drivers. The results show that streamers, which are a consequence of magnetotail flow bursts,
Ziyi Yang +3 more
wiley +1 more source
Field‐Aligned Currents and Auroral Precipitation During the Terrestrial Alfvén Wing State
Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.Abstract When sub‐Alfvénic (Alfvén Mach number MA< ${\mathrm{M}}_{A}< $1) plasmas impact Earth, Alfvén wings (AWs) develop. A Multiscale Atmosphere Geospace Environment simulation of the April 2023 storm, validated by Active Magnetosphere and Planetary Electrodynamics Response Experiment data, reveals the field‐aligned‐current (FAC) generation ...
B. L. Burkholder +5 more
wiley +1 more source
Magnetohydrodynamically generated velocities in confined plasma [PDF]
Physics of Plasmas, 2015 We investigate by numerical simulation the rotational flows in a toroid confining a conducting magnetofluid in which a current is driven by the application of externally supported electric and magnetic fields. The computation involves no microscopic instabilities and is purely magnetohydrodynamic (MHD).
David Montgomery +3 more
openaire +2 more sources
Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.Abstract This study investigates the formation of a newly identified storm‐time ionospheric phenomenon, the bubble‐like ionospheric super‐depletion structure (BLISS) in F‐region plasma densities. The observed BLISS initiates from the magnetic dip equator in the post‐sunset region and expands westward and poleward, reaching midlatitudes of ∼40°, which ...
Shanshan Bao +8 more
wiley +1 more source
Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.Abstract Solar wind directional discontinuities can generate transient mesoscale structures such as foreshock bubbles and hot flow anomalies (HFAs) upstream of Earth's bow shock. These structures can have a global impact on near‐Earth space, so understanding their formation conditions is essential.
Lucile Turc +17 more
wiley +1 more source
Stencil Computations on AMD and Nvidia Graphics Processors: Performance and Tuning Strategies
Concurrency and Computation: Practice and Experience, Volume 37, Issue 12-14, 25 June 2025.ABSTRACT Over the last ten years, graphics processors have become the de facto accelerator for data‐parallel tasks in various branches of high‐performance computing, including machine learning and computational sciences. However, with the recent introduction of AMD‐manufactured graphics processors to the world's fastest supercomputers, tuning ...
Johannes Pekkilä +3 more
wiley +1 more source
Generalized analytic functions in magnetohydrodynamics [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2011 An approach of generalized analytic functions to the magnetohydrodynamic (MHD) problem of an electrically conducting viscous incompressible flow past a solid non-magnetic body of revolution is presented. In this problem, the magnetic field and the body’s axis of revolution are aligned with the flow at infinity, and the fluid and body are ...
openaire +2 more sources
Experimental investigations on liquid-metal MHD generators [PDF]
Liquid metal magnetohydrodynamic generator hydraulic losses and duct ...
Baranov, G. A.
core +1 more source
Dawn‐Dusk Asymmetry of Kelvin‐Helmholtz Vortices Along the Kronian Magnetopause
Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.Abstract The Kelvin‐Helmholtz instability (KHI) at the Kronian magnetopause is an important process resulting from the interaction between the magnetosphere and the solar wind. The Kronian magnetosphere is rotationally driven, thus dawn‐dusk asymmetry has been observed in the KHI structures.
Enhao Feng +4 more
wiley +1 more source
Thermodynamic analysis of new cycles for liquid-metal MHD generators [PDF]
Acceleration devices for liquid metal magnetohydrodynamic ...
Boldyrev, V. M.
core +1 more source