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Laboratory Experiments on Magnetic Phenomena in Geo- and Astrophysics

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Publications

Shaken and Stirred: When Bond Meets Suess–de Vries and Gnevyshev–Ohl

Author(s): F. Stefani, R. Stepanov, T. Weier
Published in: Solar Physics, Issue 296/6, 2021, ISSN 0038-0938
DOI: 10.1007/s11207-021-01822-4

Ekman boundary layers in a fluid filled precessing cylinder

Author(s): F. Pizzi, A. Giesecke, F. Stefani
Published in: AIP Advances, Issue 11/3, 2021, Page(s) 035023, ISSN 2158-3226
DOI: 10.1063/5.0037922

Convection-caused symmetry breaking of azimuthal magnetorotational instability in a liquid metal Taylor--Couette flow

Author(s): M. Seilmayer, J. Ogbonna, F. Stefani
Published in: Magnetohydrodynamics, Issue 56/2-3, 2020, Page(s) 225-236, ISSN 0024-998X
DOI: 10.22364/mhd.56.2-3.14

Zero Net Flux MRI Turbulence in Disks: Sustenance Scheme and Magnetic Prandtl Number Dependence

Author(s): George Mamatsashvili, George Chagelishvili, Martin E. Pessah, Frank Stefani, Gianluigi Bodo
Published in: The Astrophysical Journal, Issue 904/1, 2020, Page(s) 47, ISSN 1538-4357
DOI: 10.3847/1538-4357/abbd42

Four-Frequency Solution in a Magnetohydrodynamic Couette Flow as a Consequence of Azimuthal Symmetry Breaking

Author(s): F. Garcia, M. Seilmayer, A. Giesecke, F. Stefani
Published in: Physical Review Letters, Issue 125/26, 2020, Page(s) 264501, ISSN 0031-9007
DOI: 10.1103/physrevlett.125.264501

Long term time dependent frequency analysis of chaotic waves in the weakly magnetized spherical Couette system

Author(s): Ferran Garcia, Martin Seilmayer, André Giesecke, Frank Stefani
Published in: Physica D: Nonlinear Phenomena, Issue 418, 2021, Page(s) 132836, ISSN 0167-2789
DOI: 10.1016/j.physd.2020.132836

A Model of a Tidally Synchronized Solar Dynamo

Author(s): F. Stefani, A. Giesecke, T. Weier
Published in: Solar Physics, Issue 294/5, 2019, ISSN 0038-0938
DOI: 10.1007/s11207-019-1447-1

Chaotic wave dynamics in weakly magnetized spherical Couette flows

Author(s): Ferran Garcia, Martin Seilmayer, André Giesecke, Frank Stefani
Published in: Chaos: An Interdisciplinary Journal of Nonlinear Science, Issue 30/4, 2020, Page(s) 043116, ISSN 1054-1500
DOI: 10.1063/1.5140577

Two types of axisymmetric helical magnetorotational instability in rotating flows with positive shear

Author(s): George Mamatsashvili, Frank Stefani, Rainer Hollerbach, Günther Rüdiger
Published in: Physical Review Fluids, Issue 4/10, 2019, ISSN 2469-990X
DOI: 10.1103/physrevfluids.4.103905

Negative Magnetic Diffusivity β Replacing the α Effect in the Helical Dynamo

Author(s): Kiwan Park
Published in: The Astrophysical Journal, Issue 898/2, 2020, Page(s) 112, ISSN 1538-4357
DOI: 10.3847/1538-4357/ab9b89

Phase coherence and phase jumps in the Schwabe cycle

Author(s): Frank Stefani, Jürg Beer, André Giesecke, Timo Gloaguen, Martin Seilmayer, Rodion Stepanov, Tom Weier
Published in: Astronomische Nachrichten, Issue 341/6-7, 2020, Page(s) 600-615, ISSN 0004-6337
DOI: 10.1002/asna.202013809

Experimental investigation of the return flow instability in magnetized spherical Couette flows

Author(s): J. Ogbonna, F. Garcia, T. Gundrum, M. Seilmayer, F. Stefani
Published in: Physics of Fluids, Issue 32/12, 2020, Page(s) 124119, ISSN 1070-6631
DOI: 10.1063/5.0029570

Schwabe, Gleissberg, Suess-de Vries: Towards a consistent model of planetary synchronization of solar cycles

Author(s): F. Stefani, M. Seilmayer, R. Stepanov, T. Weier
Published in: Magnetohydrodynamics, Issue 56/2-3, 2020, Page(s) 269-280, ISSN 0024-998X
DOI: 10.22364/mhd.56.2-3.18

Generating a tide-like flow in a cylindrical vessel by electromagnetic forcing

Author(s): Peter Jüstel, Sebastian Röhrborn, Peter Frick, Vladimir Galindo, Thomas Gundrum, Felix Schindler, Frank Stefani, Rodion Stepanov, Tobias Vogt
Published in: Physics of Fluids, Issue 32/9, 2020, Page(s) 097105, ISSN 1070-6631
DOI: 10.1063/5.0015271

Modulated rotating waves and triadic resonances in spherical fluid systems: The case of magnetized spherical Couette flow

Author(s): F. Garcia, A. Giesecke, F. Stefani
Published in: Physics of Fluids, Issue 33/4, 2021, Page(s) 044105, ISSN 1070-6631
DOI: 10.1063/5.0049516