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Bonn 2010 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 4: Heliosphere I

EP 4.3: Vortrag

Dienstag, 16. März 2010, 09:15–09:30, AKM

Singular points of flow and field in ideal or slightly non-ideal MHD flows — •Dieter Nickeler, Marian Karlicky, and Miroslav Barta — Astronomical Institute Ondrejov AV CR, 25 165 Ondrejov, Czech Republic

The existence of singular points of plasma flows and magnetic fields in MHD is often correlated with reconnection scenarios. In this talk we want to shed some light on the "Anti-Reconnection" problem, as not every null point or stagnation point guarantees the existence of a reconnection process. We analyse possible configurations in the vicinity of these singular points to show how the geometrical and topological shapes of the non-ideal terms in almost ideal Ohm's law correlates with the geometrical and topological properties of the velocity fields and the magnetic fields.

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