Results 1 to 10 of about 550 (177)
Avalanches in magnetohydrodynamical simulations
Physical Review EScale invariance is a hallmark of many natural systems, including solar flares, where energy release spans a vast range of scales. Recent computational advances, at the level of both algorithmics and hardware, have enabled high-resolution magnetohydrodynamical (MHD) simulations to span multiple scales, offering new insights into magnetic energy ...
Mats Carlsson +2 more
exaly +4 more sources
A test suite for magnetohydrodynamical simulations
Astrophysical Journal, 1992 A collection is presented of MHD problems that will provide researchers who have interests in modeling MHD phenomena with a battery of tests (a 'test suite') for calibrating their numerical algorithms. Use of these tests will provide a common reference for comparison of different numerical MHD algorithms. The test suite includes both 1D and 2D problems.
Charles Evans +2 more
exaly +2 more sources
Inferring the Magnetic Field from the Rayleigh–Taylor Instability
The Astrophysical Journal, 2023 By extending the potential approach of Layzer and Goncharov to the magnetohydrodynamics equations, we find the nonlinear solutions to the single-mode Rayleigh–Taylor instability subjected to uniform magnetic fields at various inclinations. This allows us
Benoît-Joseph Gréa, Antoine Briard
doaj +1 more source
Parallelization of a Magnetohydrodynamics Model for Plasma Simulation [PDF]
2018 IEEE 38th Central America and Panama Convention (CONCAPAN XXXVIII), 2018 Plasma simulations are inherently complex due to the numerous and intricate processes that naturally occur to matter in this state. Computer simulations and visualizations of plasma help researchers and scientists understand the physics that takes place in it.
Alvarado, Daniel +3 more
openaire +3 more sources
Magnetohydrodynamic Simulations of the Supernova Remnant G1.9+0.3
The Astrophysical Journal, 2023 The youngest Galactic supernova remnant G1.9+0.3 shows a discrete feature between its radio and X-ray morphologies. The observed radio morphology features a single maximum in the north, while the X-ray observation shows two opposite “ears” on the east ...
Shaobo Zhang +4 more
doaj +1 more source
Global MHD Simulations of the Time-dependent Corona
The Astrophysical Journal, 2023 We describe, test, and apply a technique to incorporate full-Sun, surface flux evolution into an MHD model of the global solar corona. Requiring only maps of the evolving surface flux, our method is similar to that of Lionello et al., but we introduce ...
Roberto Lionello +7 more
doaj +1 more source
MAGNETOHYDRODYNAMIC SIMULATIONS OF THE ATMOSPHERE OF HD 209458b [PDF]
The Astrophysical Journal, 2014 6 pages, 4 figures, accepted at ...
Rogers TM, Showman AP
openaire +3 more sources
Rotation in Event Horizon Telescope Movies
The Astrophysical Journal, 2023 The Event Horizon Telescope (EHT) has produced images of M87* and Sagittarius A*, and will soon produce time sequences of images, or movies. In anticipation of this, we describe a technique to measure the rotation rate, or pattern speed Ω _p , from ...
Nicholas S. Conroy +9 more
doaj +1 more source
The Athena++ Adaptive Mesh Refinement Framework: Multigrid Solvers for Self-gravity
The Astrophysical Journal Supplement Series, 2023 We describe the implementation of multigrid solvers in the Athena++ adaptive mesh refinement (AMR) framework and their application to the solution of the Poisson equation for self-gravity.
Kengo Tomida, James M. Stone
doaj +1 more source
RADIATIVE MAGNETOHYDRODYNAMIC SIMULATION OF SUNSPOT STRUCTURE [PDF]
The Astrophysical Journal, 2009 Results of a three-dimensional MHD simulation of a sunspot with a photospheric size of about 20 Mm are presented. The simulation has been carried out with the MURaM code, which includes a realistic equation of state with partial ionization and radiative transfer along many ray directions.
Rempel, M., Schüssler, M., Knölker, M.
openaire +2 more sources