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Lookup NU author(s): Dr G Rudiger,
Professor Axel Brandenburg
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Motivated by new observations of solar surface flow patterns of mesogranulation, theoretical computations of the horizontal divergence-vorticity correlation are presented. Because of its close relation to the helicity in rotating turbulence such observations and discussions are of particular importance for the conventional dynamo theory. For the northern hemisphere we find a small, but always negative, divergence-vorticity correlation. Both an analytical Second Order Correlation Approximation for slow rotation as well as a numerical simulation (originally done for accretion disks) for fast rotation yield very similar results.
Author(s): Rudiger G, Brandenburg A, Pipin VV
Publication type: Article
Publication status: Published
Journal: Astronomische Nachrichten
Print publication date: 01/07/1999
ISSN (print): 0004-6337
ISSN (electronic): 1521-3994
Publisher: Wiley - V C H Verlag GmbH & Co. KGaA
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