Laboratory Experiments on Magnetic Phenomena in Geo- and Astrophysics

Project Information

LEMAP

Grant agreement ID: 787544

DOI 10.3030/787544

Project closed

EC signature date 7 June 2018

Start date 1 November 2018

End date 31 October 2023

Funded under

• EXCELLENT SCIENCE - European Research Council (ERC)

Total cost € 2 493 250,00

EU contribution € 2 493 250,00

Coordinated by

HELMHOLTZ-ZENTRUM DRESDEN-ROSSENDORF EV
Germany

Deliverables

Open Research Data Pilot (1)

Data Management Plan

Participation in the Open Research Data Pilot

Publications

Peer reviewed articles (38)

The effect of nutation angle on the flow inside a precessing cylinder and its dynamo action

Author(s): Vivaswat Kumar, Federico Pizzi, André Giesecke, Ján Šimkanin, Thomas Gundrum, Matthias Ratajczak, Frank Stefani
Published in: Physics of Fluids, Issue 35, 2023, Page(s) 014114, ISSN 1089-7666
Publisher: American Institute of Physics
DOI: 10.1063/5.0134562

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
Publisher: Kluwer Academic Publishers
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
Publisher: American Institute of Physics Inc.
DOI: 10.1063/5.0037922

A Synchronized Two-Dimensional alpha-Omega–Model of the Solar Dynamo

Author(s): M. Klevs, F. Stefani, L. Jouve
Published in: Solar Physics, Issue 298, 2023, Page(s) 90, ISSN 0038-0938
Publisher: Kluwer Academic Publishers
DOI: 10.1007/s11207-023-02173-y

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
Publisher: Consultants Bureau
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
Publisher: IOP
DOI: 10.3847/1538-4357/abbd42

Convective, absolute and global azimuthal magnetorotational instabilities

Author(s): A. Mishra, G. Mamatsashvili, V. Galindo, F. Stefani
Published in: Journal of Fluid Mechanics, Issue 922, 2021, ISSN 0022-1120
Publisher: Cambridge University Press
DOI: 10.1017/jfm.2021.548

Current-driven kink instabilities in relativistic jets: dissipation properties

Author(s): G Bodo; G Mamatsashvili; P Rossi; A Mignone
Published in: Monthly Notices of the Royal Astronomical Society 510(2022)2, 2391-2406, Issue 510, 2021, Page(s) 2391-2406, ISSN 1365-2966
Publisher: Royal Astronomical Society
DOI: 10.48550/arxiv.2111.14575

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
Publisher: American Physical Society
DOI: 10.1103/physrevlett.125.264501

No evidence for absence of solar dynamo synchronization

Author(s): Stefani, F.; Beer, J.; Weier, T.
Published in: Solar Physics, Issue 83, 2023, Page(s) 298, ISSN 1573-093X
Publisher: Springer nature
DOI: 10.1007/s11207-023-02174-x

High dimensional tori and chaotic and intermittent transients in magnetohydrodynamic Couette flows

Author(s): F. Garcia; J. Ogbonna; A. Giesecke; F. Stefani
Published in: Communications in Nonlinear Science and Numerical Simulation 118(2023), 107030, Issue 118, 2023, Page(s) 107030, ISSN 1878-7274
Publisher: Elsevier
DOI: 10.1016/j.cnsns.2022.107030

From helical to standard magnetorotational instability: predictions for upcoming liquid sodium experiments

Author(s): Ashish Mishra; George Mamatsashvili; Frank Stefani
Published in: Physical Review Fluids, Issue 7, 2022, Page(s) 064802, ISSN 2469-990X
Publisher: Americal Physical Society
DOI: 10.48550/arxiv.2112.01399

Nonlinear evolution of magnetorotational instability in a magnetized Taylor-Couette flow: Scaling properties and relation to upcoming DRESDYN-MRI experiment

Author(s): A. Mishra, G. Mamatsashvili, F. Stefani
Published in: Physical Review Fluids, Issue 8, 2023, Page(s) 083902, ISSN 2469-990X
Publisher: Americal Physical Society
DOI: 10.1103/physrevfluids.8.083902

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
Publisher: Elsevier BV
DOI: 10.1016/j.physd.2020.132836

Tidally Forced Planetary Waves in the Tachocline of Solar-like Stars

Author(s): Gerrit M. Horstmann, George Mamatsashvili, André Giesecke, Teimuraz V. Zaqarashvili, and Frank Stefani
Published in: Astrophysical Journal, Issue 944, 2023, Page(s) 48, ISSN 0004-637X
Publisher: University of Chicago Press
DOI: 10.3847/1538-4357/aca278

Analyzing a modulated electromagnetic m=2 forcing and its capability to synchronize the Large Scale Circulation in a Rayleigh-Bénard cell of aspect ratio Г = 1

Author(s): Röhrborn, S.; Jüstel, P.; Galindo, V.; Gundrum, T.; Schindler, F.; Stefani, F.; Stepanov, R.; Vogt, T.
Published in: Magnetohydrodynamics, Issue 58, 2022, Page(s) 187-194, ISSN 1574-0579
Publisher: University of Latvia
DOI: 10.22364/mhd.58.1-2.20

Magnetically induced gluing bifurcations of three-tori in spherical Couette flows

Author(s): F. Garcia
Published in: Physics of Fluids, Issue 35, 2023, Page(s) 111704, ISSN 1089-7666
Publisher: AIP
DOI: 10.1063/5.0174155

Weak branch and multimodal convection in rapidly rotating spheres at low Prandtl number

Author(s): Frank Stefani; Emmanuel Dormy; Fernando Garcia
Published in: Physical Review Fluids, Issue 6, 2021, Page(s) 123501, ISSN 2469-990X
Publisher: Americal Physical Society
DOI: 10.48550/arxiv.2112.07973

Numerical simulation of tidal synchronization of the large-scale circulation in Rayleigh-Bénard convection with aspect ratio 1

Author(s): Röhrborn, S.; Jüstel, P.; Galindo, V.; Stefani, F.; Stepanov, R.
Published in: Magnetohydrodynamics, Issue 58, 2022, Page(s) 285-292, ISSN 1574-0579
Publisher: University of Latvia
DOI: 10.48550/arxiv.2209.07173

Prograde and retrograde precession of a fluid-filled cylinder

Author(s): Federico Pizzi; André Giesecke; Jan Simkanin; Frank Stefani
Published in: New Journal of Physics, Issue 23, 2021, Page(s) 123016, ISSN 1367-2630
Publisher: Institute of Physics Publishing
DOI: 10.1088/1367-2630/ac3c0f

Interplay between geostrophic vortices and inertial waves in precession-driven turbulence

Author(s): F. Pizzi, G. Mamatsashvili, A. J. Barker, A. Giesecke, F. Stefani
Published in: Physics of Fluids, Issue 34, 2022, Page(s) 125135, ISSN 1089-7666
Publisher: American Institute ofp Physics
DOI: 10.1063/5.0131035

Solar and Anthropogenic Influences on Climate: Regression Analysis and Tentative Predictions

Author(s): Frank Stefani
Published in: Climate, Issue 9/11, 2021, Page(s) 163, ISSN 2225-1154
Publisher: MDPI
DOI: 10.3390/cli9110163

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
Publisher: Kluwer Academic Publishers
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
Publisher: American Institute of Physics
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
Publisher: APS
DOI: 10.1103/physrevfluids.4.103905

Numerical and theoretical framework for the DRESDYN precession dynamo experiment

Author(s): Pizzi, F.; Giesecke, A.; Simkanin, J.; Kumar, V.; Gundrum, T.; Stefani, F.
Published in: Magnetohydrodynamics, Issue 58, 2022, Page(s) 445-453, ISSN 1574-0579
Publisher: University of Latvia
DOI: 10.48550/arxiv.2301.08076

Alfvén wave experiments with liquid rubidium in a pulsed magnetic field

Author(s): Gundrum, Th.; Forbriger, J.; Herrmannsdörfer, Th.; Mamatsashvili, G.; Schnauck, S.; Stefani, F.; Wosnitza, J.
Published in: Magnetohydrodynamics, Issue 58, 2022, Page(s) 389-395, ISSN 1574-0579
Publisher: University of Latvia
DOI: 10.48550/arxiv.2301.08463

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
Publisher: IOP Publishing
DOI: 10.3847/1538-4357/ab9b89

Dynamic transitions of the magnetized spherical Couette flow between its base state and the return flow instability

Author(s): J Ogbonna, F Garcia, T Gundrum, M Seilmayer, F Stefani
Published in: IOP Conference Series: Materials Science and Engineering, Issue 1234, 2022, Page(s) 012004, ISSN 1757-899X
Publisher: Institute of Physics
DOI: 10.1088/1757-899x/1223/1/012004

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
Publisher: John Wiley & Sons Ltd.
DOI: 10.1002/asna.202013809

MRI turbulence in accretion discs at large magnetic Prandtl numbers

Author(s): Held, Loren E.; Mamatsashvili, George
Published in: Monthly Notices of the Royal Astronomical Society 517(2022)2, 2309-2330, Issue 517, 2022, Page(s) 2309-2330, ISSN 1365-2966
Publisher: Royal Astronomical Society
DOI: 10.1093/mnras/stac2656

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
Publisher: American Institute of Physics
DOI: 10.1063/5.0029570

Synchronizing the helicity of Rayleigh–Bénard convection by a tide-like electromagnetic forcing

Author(s): Peter Jüstel; Sebastian Röhrborn; Sven Eckert; Vladimir Galindo; Thomas Gundrum; Rodion Stepanov; Frank Stefani
Published in: Physics of Fluids, Issue 34, 2022, Page(s) 104115, ISSN 1089-7666
Publisher: Americal Institute of Physics
DOI: 10.1063/5.0114035

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
Publisher: Consultants Bureau
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
Publisher: American Institute of Physics
DOI: 10.1063/5.0015271

Mode Conversion and Period Doubling in a Liquid Rubidium Alfvén-Wave Experiment with Coinciding Sound and Alfvén Speeds.

Author(s): F. Stefani; J. Forbriger; Th. Gundrum; T. Herrmannsdörfer; J. Wosnitza
Published in: Physical Review Letters, Issue 127, 2021, Page(s) 275001, ISSN 1079-7114
Publisher: Americal Physical Society
DOI: 10.1103/physrevlett.127.275001

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
Publisher: American Institute of Physics
DOI: 10.1063/5.0049516

Simultaneous Measurement of Flow Velocity and Electrical Conductivity of a Liquid Metal Using an Eddy Current Flow Meter in Combination with a Look-Up-Table Method

Author(s): N. Krauter; F. Stefani
Published in: Sensors, Issue 23, 2023, Page(s) 9018, ISSN 1424-8220
Publisher: Multidisciplinary Digital Publishing Institute (MDPI)
DOI: 10.3390/s23229018