Results 41 to 50 of about 40,435 (218)
The intensity contrast of solar granulation: comparing Hinode SP results with MHD simulations [PDF]
, 2008 The contrast of granulation is an important quantity characterizing solar surface convection. We compare the intensity contrast at 630 nm, observed using the Spectro-Polarimeter (SP) aboard the Hinode satellite, with the 3D radiative MHD simulations of V{
A. Gandorfer +25 more
core +2 more sources
Forced current sheet structure, formation and evolution: application to magnetic reconnection in the magnetosphere [PDF]
Annales Geophysicae, 2004 By means of a simulation model, the earlier predicted nonlinear kinetic structure, a Forced Kinetic Current Sheet (FKCS), with extremely anisotropic ion distributions, is shown to appear as a result of a fast nonlinear process of transition from a ...
V. I. Domrin, A. P. Kropotkin
doaj +1 more source
MHD Simulations of Penumbra Fine Structure
The Astrophysical Journal, 2007 We present results of numerical 3D MHD simulations with radiative energy transfer of fine structure in a small sunspot of about 4 Mm width. The simulations show the development of filamentary structures and flow patterns that are, except for the lengths of the filaments, very similar to those observed.
Heinemann, T. +3 more
openaire +3 more sources
MHD simulations of quadrupolar paleomagnetospheres [PDF]
Journal of Geophysical Research: Space Physics, 2004 During geomagnetic polarity transitions the Earth's internal magnetic field is expected to deviate significantly from the dipolar configuration observed today, and higher‐order multipoles can become important. Their effects on the magnetosphere are investigated in this study by means of MHD simulations.
Vogt, J. +6 more
openaire +2 more sources
The Astrophysical Journal, 2023 We present the first results of the hybrid data-driven magnetofrictional (MF) and data-constrained magnetohydrodynamic (MHD) simulations of solar active region NOAA 11158, which produced an X-class flare and coronal mass ejection on 2011 February 15 ...
Andrey N. Afanasyev +3 more
doaj +1 more source
Earth and Space Science, 2020 We use the magnetohydrodynamic (MHD) with embedded particle‐in‐cell model (MHD‐EPIC) to study the Geospace Environment Modeling (GEM) dayside kinetic processes challenge event at 01:50–03:00 UT on 18 November 2015, when the magnetosphere was driven by a ...
Yuxi Chen +9 more
doaj +1 more source
Spectral features of solar wind turbulent plasma [PDF]
, 2009 Spectral properties of a fully compressible solar wind Hall Magnetohydrodynamic plasma are investigated by means of time dependent three dimensional Hall MHD simulations.
Alexandrova +59 more
core +2 more sources
Comparison of the thin flux tube approximation with 3D MHD simulations
, 2009 The structure and dynamics of small vertical photospheric magnetic flux concentrations has been often treated in the framework of an approximation based upon a low-order truncation of the Taylor expansions of all quantities in the horizontal direction ...
Bruls +28 more
core +1 more source
Non-locality of Hydrodynamic and Magnetohydrodynamic Turbulence
, 2010 We compare non-locality of interactions between different scales in hydrodynamic (HD) turbulence and magnetohydrodynamic (MHD) turbulence in a strongly magnetized medium.
Alexakis +14 more
core +1 more source
The role of the Hall effect in the global structure and dynamics of planetary magnetospheres: Ganymede as a case study [PDF]
, 2015 We present high resolution Hall MHD simulations of Ganymede's magnetosphere demonstrating that Hall electric fields in ion-scale magnetic reconnection layers have significant global effects not captured in resistive MHD simulations. Consistent with local
Collinson, Glyn +3 more
core +1 more source