Results 11 to 20 of about 5,169 (254)

RADIATIVE MAGNETOHYDRODYNAMIC SIMULATION OF SUNSPOT STRUCTURE [PDF]

open access: bronzeThe 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.
M. Rempel, M. Schüßler, M. Knölker
openalex   +4 more sources

Stream-aligned Magnetohydrodynamics for Solar Wind Simulations [PDF]

open access: yesThe 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
openaire   +2 more sources

Simulations of Incompressible Magnetohydrodynamic Turbulence [PDF]

open access: yesThe 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
openaire   +2 more sources

SIMULATIONS OF ELECTRON MAGNETOHYDRODYNAMIC TURBULENCE

open access: yesThe 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.
openaire   +2 more sources

RESISTIVE MAGNETOHYDRODYNAMIC SIMULATIONS OF RELATIVISTIC MAGNETIC RECONNECTION [PDF]

open access: yesThe Astrophysical Journal, 2010
published in ...
Zenitani, Seiji   +2 more
openaire   +2 more sources

General relativistic magnetohydrodynamical simulations of the jet in M87 [PDF]

open access: yes, 2016
(abridged) The connection between black hole, accretion disk, and radio jet can be best constrained by fitting models to observations of nearby low luminosity galactic nuclei, in particular the well studied sources Sgr~A* and M87.
Falcke, Heino   +2 more
core   +2 more sources

Striped Jets in Post–Neutron Star Merger Systems

open access: yesThe 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
doaj   +1 more source

MAGNETOHYDRODYNAMIC SIMULATIONS OF HOT JUPITER UPPER ATMOSPHERES [PDF]

open access: yesThe Astrophysical Journal, 2014
accepted at ...
Trammell, George B.   +2 more
openaire   +2 more sources

Nonequilibrium Ionization Modeling of Petschek-type Shocks in Reconnecting Current Sheets in Solar Eruptions

open access: yesThe Astrophysical Journal, 2023
Nonequilibrium ionization (NEI) is essentially required for astrophysical plasma diagnostics once the plasma status departs from the assumption of ionization equilibrium.
Chengcai Shen   +2 more
doaj   +1 more source

The Formation of Star-forming Disks in the TNG50 Simulation

open access: yesThe Astrophysical Journal, 2023
We investigate the disk formation process in the TNG50 simulation, examining the profiles of SFR surface density (Σ _SFR ), gas inflow and outflow, and the evolution of the angular momentum of inflowing gas particles.
Enci Wang, Simon J. Lilly
doaj   +1 more source

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