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Searching invisible helical dynamos in a cylinder
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SYSNO ASEP 0023923 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Searching invisible helical dynamos in a cylinder Title Hledání neviditelného spirálního dynama v cylindru Author(s) Šimkanin, Ján (GFU-E) ORCID, RID
Tilgner, A. (DE)Source Title Physics of the Earth and Planetary Interiors. - : Elsevier - ISSN 0031-9201
Roč. 153, 1/3 (2005), s. 101-107Number of pages 7 s. Language eng - English Country NL - Netherlands Keywords invisible dynamo ; inverse dynamo problem ; helical flows Subject RIV DE - Earth Magnetism, Geodesy, Geography R&D Projects GP205/04/P182 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z30120515 - GFU-E (2005-2011) Annotation A "invisible dynamo" is a dynamo which operates in an electrically conducting region surrounded vacuum and which generates a magnetic field which is trapped in the electrically conducting region so that no magnetic field exists in the vacuum. Consequently, observations from outside the conducting region are unable to detect this dynamo. The search for an invisible kinematic dynamo is started in an infinite cylinder with periodic boundary conditions along the axis. The first results suggest that invisible magnetic decay modes exist in cylinders, but that no invisible growing field can be supported by the dynamo mechanism. Workplace Geophysical Institute Contact Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028 Year of Publishing 2006
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