Results 11 to 20 of about 550 (177)
Influence of Crustal Magnetic Fields on Horizontal Plasma Transport and Ion Escape on Mars
The Astrophysical Journal, 2023 Owing to its unevenly distributed crustal fields, Mars acts as a unique obstacle to the solar wind. In the presence of the crustal fields, the transport of the planetary ions on the dayside ionosphere exhibits north–south asymmetry.
Guokan Li +5 more
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Hydrodynamic and magnetohydrodynamic simulations of wire turbulence [PDF]
High Energy Density Physics, 2019 We report on simulations of laboratory experiments in which magnetized supersonic flows are driven through a wire mesh. The goal of the study was to investigate the ability of such a configuration to generate supersonic, MHD turbulence. We first report on the morphological structures that develop in both magnetized and non-magnetized cases.
Fogerty, E +4 more
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SIMULATIONS OF ELECTRON MAGNETOHYDRODYNAMIC TURBULENCE
The Astrophysical Journal, 2009 We present numerical simulations of electron magnetohydrodynamic (EMHD) and electron reduced MHD (ERMHD) turbulence. Comparing scaling relations, we find that both EMHD and ERMHD turbulence show similar spectra and anisotropy. We develop new techniques to study anisotropy of EMHD turbulence.
Cho, Jungyeon, Lazarian, A.
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RESISTIVE MAGNETOHYDRODYNAMICS SIMULATIONS OF THE IDEAL TEARING MODE [PDF]
The Astrophysical Journal, 2015 We study the linear and nonlinear evolution of the tearing instability on thin current sheets by means of two-dimensional numerical simulations, within the framework of compressible, resistive magnetohydrodynamics. In particular we analyze the behavior of current sheets whose inverse aspect ratio scales with the Lundquist number $S$ as $S^{-1/3}$. This
LANDI, SIMONE +4 more
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Three-dimensional magnetohydrodynamic simulations of the Crab nebula [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 In this paper we give a detailed account of the first 3D relativistic magnetohydrodynamic (MHD) simulations of Pulsar Wind Nebulae (PWN), with parameters most suitable for the Crab Nebula. In order to clarify the new features specific to 3D models, reference 2D simulations have been carried out as well.
O. Porth, S. S. Komissarov, R. Keppens
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Implementation of Chemistry in the Athena++ Code
The Astrophysical Journal Supplement Series, 2023 Chemistry plays a key role in many aspects of astrophysical fluids. Atoms and molecules are agents for heating and cooling, determine the ionization fraction, serve as observational tracers, and build the molecular foundation of life.
Munan Gong +8 more
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Robust Field-level Likelihood-free Inference with Galaxies
The Astrophysical Journal, 2023 We train graph neural networks to perform field-level likelihood-free inference using galaxy catalogs from state-of-the-art hydrodynamic simulations of the CAMELS project.
Natalí S. M. de Santi +14 more
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Stream-aligned Magnetohydrodynamics for Solar Wind Simulations [PDF]
The Astrophysical Journal, 2021 Abstract We present a reduced magnetohydrodynamic (MHD) mathematical model describing the dynamical behavior of highly conducting plasmas with frozen-in magnetic fields, constrained by the assumption that there exists a frame of reference, where the magnetic field vector,
Igor V. Sokolov +2 more
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Simulations of Incompressible Magnetohydrodynamic Turbulence [PDF]
The Astrophysical Journal, 2001 We simulate incompressible MHD turbulence using a pseudospectral code. Our major conclusions are: (1) MHD turbulence is most conveniently described in terms of counterpropagating shear Alfven and slow waves. Shear Alfven waves control the cascade dynamics. Slow waves play a passive role and adopt the spectrum set by the shear Alfven waves.
Maron, Jason, Goldreich, Peter
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Striped Jets in Post–Neutron Star Merger Systems
The Astrophysical Journal, 2023 Models invoking magnetic reconnection as the particle acceleration mechanism within relativistic jets often adopt a gradual energy dissipation profile within the jet. However, such a profile has yet to be reproduced in first-principles simulations.
Emma Kaufman +4 more
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