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Thin current sheets caused by plasma flow gradients in space and astrophysical plasma
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SYSNO ASEP 0355145 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Thin current sheets caused by plasma flow gradients in space and astrophysical plasma Author(s) Nickeler, Dieter Horst (ASU-R) RID, ORCID
Wiegelmann, T. (DE)Source Title Annales Geophysicae. - : Copernicus - ISSN 0992-7689
Roč. 28, č. 8 (2010), s. 1523-1532Number of pages 10 s. Language eng - English Country DE - Germany Keywords magnetospheric physics ; space plasma physics Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics R&D Projects IAA300030804 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10030501 - ASU-R (2005-2011) UT WOS 000281432700006 DOI 10.5194/angeo-28-1523-2010 Annotation We concentrate here on incompressible plasma flows and 2-D equilibria, which allow us to find analytic solutions of the stationary magnetohydrodynamics equations (SMHD). First we solve the magnetohydrostatic (MHS) equations with the help of a Grad-Shafranov equation and then we transform these static equilibria into a stationary state with plasma flow. We are in particular interested to study SMHD-equilibria with strong plasma flow gradients perpendicular to separatrices. We find that induced thin current sheets occur naturally in such situations. The strength of the induced currents depend on the Alfvén Mach number and its gradient, and on the magnetic field. Workplace Astronomical Institute Contact Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2011
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