Magnetic reconnection in a current sheet six-pack: a numerical experiment
| Autor: | Jürgen Dreher |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Physics
Magnetic reconnection Mechanics Condensed Matter Physics Plasma acceleration Atomic and Molecular Physics and Optics Symmetry (physics) Current sheet Classical mechanics Physics::Plasma Physics Electrical resistivity and conductivity Physics::Space Physics Current (fluid) Magnetohydrodynamics Current density Mathematical Physics |
| Zdroj: | Physica Scripta. :46-49 |
| ISSN: | 1402-4896 0031-8949 |
| DOI: | 10.1088/0031-8949/1998/t74/008 |
| Popis: | Two-dimensional magneto-hydrodynamic (MHD) simulations are carried out to study magnetic reconnection in a configuration that is characterized by six current sheets extending radially from the z-axis. In the initial configuration, the current density within the current sheets sharply increases with increasing radial distance from the origin which makes it necessary to introduce a numerical wall-stabilization. With this, the interior region appears to be stable in the case of ideal Ohm's law, but finite resistivity leads to spontaneous magnetic reconnection, resulting in considerable plasma acceleration. The plasma flow is almost incompressible. The high symmetry of the initial configuration is approximately conserved even when a non-symmetric distribution of the resistivity is assumed. |
| Databáze: | OpenAIRE |
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