Results 71 to 80 of about 2,051 (189)

Upstream IMF Influence on Closed Magnetic Field Orientation on Mars

Geophysical Research Letters, Volume 52, Issue 13, 16 July 2025.
Abstract Closed magnetic fields play an important role in plasma transport and atmospheric escape from the Martian dayside ionosphere. Leveraging in‐situ magnetic field data from the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission, we conduct a statistical analysis of closed magnetic field behavior under varying upstream conditions. Our findings
JunFeng Qin, Shannon Curry, Shaosui Xu, Dave Mitchell, Rob Lillis, Chi Zhang   +5 more
wiley   +1 more source

BATSRUS GPU: Faster-than-real-time Magnetospheric Simulations with a Block-adaptive Grid Code

The Astrophysical Journal
Block-Adaptive-Tree Solar-wind Roe-type Upwind Scheme (BATSRUS), our state-of-the-art extended magnetohydrodynamic code, is the most used and one of the most resource-consuming models in the Space Weather Modeling Framework.
Yifu An, Yuxi Chen, Hongyang Zhou, Alexander Gaenko, Gábor Tóth   +4 more
doaj   +1 more source

Influences of Variable Thermal Conductivity, Viscous Dissipation, and Cattaneo–Christov Heat and Mass Fluxes on MHD Tangent Hyperbolic Ternary Hybrid Nanofluid Flow Over a Stretching Sheet

Engineering Reports, Volume 7, Issue 7, July 2025.
This research examines the heat and mass transfer rates in magnetohydrodynamic (MHD) tangent hyperbolic ternary hybrid nanofluid flow over a stretching plate, considering factors such as variable thermal conductivity, Joule heating, viscous dissipation, chemical reactions, Darcy–Forchheimer flow, Cattaneo–Christov heat and mass fluxes, and nonlinear ...
Asfaw Tsegaye Moltot, Eshetu Haile Gorfie, Gurju Awgichew Zergaw, Hunegnaw Dessie Asress   +3 more
wiley   +1 more source

Unsteady Radiative MHD Casson Fluid Flow Over an Impulsively Started Porous Plate With Caputo Fractional Derivatives

Engineering Reports, Volume 7, Issue 7, July 2025.
This work explores the unsteady radiative magnetohydrodynamic flow of a Casson fluid over an impulsively started porous plate using Caputo fractional derivatives. The model incorporates thermal radiation, magnetic field, and memory characteristics of the fluid.
Mehari Fentahun Endalew, Xiaoming Zhang
wiley   +1 more source

Unraveling the Trigger Mechanism of Explosive Reconnection in Partially Ionized Solar Plasma

The Astrophysical Journal
Plasmoid instability usually accounts for the onset of fast reconnection events observed in astrophysical plasmas. However, the measured reconnection rate from observations can be one order of magnitude higher than that derived from magnetohydrodynamic ...
Abdullah Zafar, Lei Ni, Jun Lin, Ahmad Ali   +3 more
doaj   +1 more source

Coupled Heat Transfer Inside a Thick‐Walled Structure With an Inner Open Cavity: A Numerical Approach

Engineering Reports, Volume 7, Issue 7, July 2025.
Variation of the average Nusselt number (Nuav) with different Ra across the hot wall interface for various inner cavity shapes with wall thickness (W 0.1). ABSTRACT This research presents numerical modeling by investigating the coupled heat transfer of conduction and free convection phenomena within a thick‐walled square enclosure.
Salma Parvin, Md. Mazidul Islam, A. K. Azad, Afroza Akter   +3 more
wiley   +1 more source

Estimating Solar Wind Charge Exchange Generated Soft X‐Rays in the Jovian Magnetosheath

Journal of Geophysical Research: Space Physics, Volume 130, Issue 7, July 2025.
Abstract Solar Wind Charge eXchange (SWCX) generated soft x‐rays are used extensively to study the interfaces between charged and neutral particles throughout the solar system. This paper outlines the development of a model of Jupiter's magnetosheath using magnetohydrodynamic derived boundary equations and a combination of in situ Juno measurements and
Fenn Leppard, Atlas Patrick, Licia Ray, William R. Dunn, H. Todd Smith, Zhonghua Yao, Binzheng Zhang, TianRan Sun, Chi Wang   +8 more
wiley   +1 more source

Physical Constraint Preserving Higher-order Finite Volume Schemes for Divergence-free Astrophysical MHD and RMHD

The Astrophysical Journal
Higher-order finite volume schemes for magnetohydrodynamics (MHD) and relativistic magnetohydrodynamics (RMHD) are very valuable because they allow us to carry out astrophysical simulations with very high accuracy.
Dinshaw S. Balsara, Deepak Bhoriya, Chetan Singh, Harish Kumar, Roger Käppeli, Federico Gatti   +5 more
doaj   +1 more source

Ensemble Model Using the Fokker–Planck Equation and Alfvénic Drift for Estimating Proton Flux in Solar Energetic Particle Events

Earth and Space Science, Volume 12, Issue 7, July 2025.
Abstract Observations of solar energetic particles (SEPs) accelerated at collisionless shocks driven by coronal mass ejections (CMEs) highlight the importance of understanding proton transport in velocity space. In this study, we present an ensemble model based on the one‐dimensional Fokker–Planck equation to estimate proton flux from CME‐driven shocks
Ji‐Hoon Ha, Jae‐Hyung Lee, JaeHun Kim, Sang Cheol Han, Wonhyeong Yi, Hyun‐Jun Nah   +5 more
wiley   +1 more source

Cosmic-Ray Acceleration of Galactic Outflows in Multiphase Gas

The Astrophysical Journal
We investigate the dynamical interaction between cosmic rays (CRs) and the multiphase interstellar medium (ISM) using numerical magnetohydrodynamic (MHD) simulations with a two-moment CR solver and TIGRESS simulations of star-forming galactic disks.
Lucia Armillotta, Eve C. Ostriker, Chang-Goo Kim, Yan-Fei Jiang   +3 more
doaj   +1 more source