Results 91 to 100 of about 9,824 (218)

Simulating coronal condensation dynamics in 3D

, 2015
We present numerical simulations in 3D settings where coronal rain phenomena take place in a magnetic configuration of a quadrupolar arcade system. Our simulation is a magnetohydrodynamic simulation including anisotropic thermal conduction, optically ...
Fang, X., Keppens, R., Moschou, S. P., Xia, C.   +3 more
core   +1 more source

Reconstructing the Geometry of a Hot Flow Anomaly With Bounding Jets in Magnetosheath

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract When interplanetary magnetic field discontinuities interact with planetary bow shocks, hot flow anomalies (HFAs) form in the solar wind and can extend into the magnetosheath. Here we reconstruct the three‐dimensional geometry of an HFA bounded by two jet regions in the terrestrial magnetosheath.
Yufei Zhou, Boyi Wang, Savvas Raptis, Shan Wang, Jin Guo, Jih‐Hong Shue, David Sibeck, Quanming Lu, Jiamei Zhang, Chao Shen, Rungployphan Kieokaew, C. Philippe Escoubet, Peng Shao, James Burch   +13 more
wiley   +1 more source

Global gyrokinetic particle simulation of kinetic ballooning modes with energetic ions

Nuclear Fusion
Interactions between energetic ions (EIs) and kinetic ballooning modes (KBMs) are inevitable in fusion reactors characterized by high- β plasmas with a large population of alpha particles ( $\beta_h\sim\beta_{e,i}$ , where $\beta_{h,e,i} = 2\mu_0p_{h,e,i}
W.J. Sun, J. Bao, C. Dong, W.L. Zhang, G. Dong, Z. Lin, J.T. Cao, Z.Y. Qiu, H.S. Cai, D. Li   +9 more
doaj   +1 more source

Strong magnetohydrodynamic turbulence with cross helicity

, 2010
Magnetohydrodynamics (MHD) provides the simplest description of magnetic plasma turbulence in a variety of astrophysical and laboratory systems. MHD turbulence with nonzero cross helicity is often called imbalanced, as it implies that the energies of ...
Grappin R., Iroshnikov P. S., Jean Carlos Perez, Kadomtsev B. B., Obukhov A., Podesta J. J., Stanislav Boldyrev   +6 more
core   +1 more source

Forecasting Local Ionospheric Parameters Using Transformers

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract We present a novel method for forecasting key ionospheric parameters using transformer‐based neural networks. The model provides accurate forecasts and uncertainty quantification of the F2‐layer peak plasma frequency (foF2), the F2‐layer peak density height (hmF2), and total electron content for a given geographic location.
D. J. Alford‐Lago, C. W. Curtis, A. T. Ihler, D. P. Drob, K. A. Zawdie   +4 more
wiley   +1 more source

Properties of Magnetohydrodynamic Modes in Compressively Driven Plasma Turbulence

Physical Review X, 2020
We study properties of magnetohydrodynamic (MHD) eigenmodes by decomposing the data of MHD simulations into linear MHD modes—namely, the Alfvén, slow magnetosonic, and fast magnetosonic modes.
K. D. Makwana, Huirong Yan
doaj   +1 more source

Reconstructing Magnetotail Reconnection Events Using Data Mining is Feasible and Repeatable

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract Recently, Stephens et al. (2023), https://doi.org/10.1029/2022ja031066 utilized a data mining (DM) algorithm, applied to 26 years of magnetospheric magnetometer observations coupled with a flexible formulation of the magnetospheric magnetic field, to reconstruct the global configuration of the magnetotail when the Magnetospheric MultiScale ...
G. K. Stephens, R. S. Weigel, M. I. Sitnov, N. A. Tsyganenko   +3 more
wiley   +1 more source

Nonaxisymmetric, multi-region relaxed magnetohydrodynamic equilibrium solutions

, 2011
We describe a magnetohydrodynamic (MHD) constrained energy functional for equilibrium calculations that combines the topological constraints of ideal MHD with elements of Taylor relaxation. Extremizing states allow for partially chaotic magnetic fields
Dewar, R. L., Hole, M. J., Hudson, S. R., McGann, M.   +3 more
core   +1 more source

Low Frequency Oscillation Observed in the Ionosphere Around the Substorm Onsets

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Three substorm events in which Defense Meteorological Satellite Program (DMSP) spacecraft are geomagnetically co‐located with substorm onset locations in IMAGE far ultraviolet auroral images are analyzed. A Hilbert‐Huang Transform is used to decompose the DMSP B⊥ ${B}_{\perp }$ in the ionosphere to its intrinsic mode functions. A dominant mode
Simon Wing, Jay R. Johnson, Elmer C. Rivera, Arthur J. Hull, Peter Damiano   +4 more
wiley   +1 more source

Parallel Collisionless Shocks in Strongly Magnetized Electron–Ion Plasma. I. Temperature Anisotropies

The Astrophysical Journal
Collisionless electron–ion shocks are fundamental to astrophysical plasmas, yet their behavior in strong magnetic fields remains poorly understood.
Mohamad Shalaby, Antoine Bret, Federico Fraschetti   +2 more
doaj   +1 more source