Laboratory Experiments on Magnetic Phenomena in Geo- and Astrophysics

Rezultaty

Participation in the Open Research Data Pilot

Publikacje

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

Autorzy: Vivaswat Kumar, Federico Pizzi, André Giesecke, Ján Šimkanin, Thomas Gundrum, Matthias Ratajczak, Frank Stefani
Opublikowane w: Physics of Fluids, Numer 35, 2023, Strona(/y) 014114, ISSN 1089-7666
Wydawca: American Institute of Physics
DOI: 10.1063/5.0134562

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

Autorzy: F. Stefani, R. Stepanov, T. Weier
Opublikowane w: Solar Physics, Numer 296/6, 2021, ISSN 0038-0938
Wydawca: Kluwer Academic Publishers
DOI: 10.1007/s11207-021-01822-4

Ekman boundary layers in a fluid filled precessing cylinder

Autorzy: F. Pizzi, A. Giesecke, F. Stefani
Opublikowane w: AIP Advances, Numer 11/3, 2021, Strona(/y) 035023, ISSN 2158-3226
Wydawca: American Institute of Physics Inc.
DOI: 10.1063/5.0037922

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

Autorzy: M. Klevs, F. Stefani, L. Jouve
Opublikowane w: Solar Physics, Numer 298, 2023, Strona(/y) 90, ISSN 0038-0938
Wydawca: 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

Autorzy: M. Seilmayer, J. Ogbonna, F. Stefani
Opublikowane w: Magnetohydrodynamics, Numer 56/2-3, 2020, Strona(/y) 225-236, ISSN 0024-998X
Wydawca: Consultants Bureau
DOI: 10.22364/mhd.56.2-3.14

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

Autorzy: George Mamatsashvili, George Chagelishvili, Martin E. Pessah, Frank Stefani, Gianluigi Bodo
Opublikowane w: The Astrophysical Journal, Numer 904/1, 2020, Strona(/y) 47, ISSN 1538-4357
Wydawca: IOP
DOI: 10.3847/1538-4357/abbd42

Convective, absolute and global azimuthal magnetorotational instabilities

Autorzy: A. Mishra, G. Mamatsashvili, V. Galindo, F. Stefani
Opublikowane w: Journal of Fluid Mechanics, Numer 922, 2021, ISSN 0022-1120
Wydawca: Cambridge University Press
DOI: 10.1017/jfm.2021.548

Current-driven kink instabilities in relativistic jets: dissipation properties

Autorzy: G Bodo; G Mamatsashvili; P Rossi; A Mignone
Opublikowane w: Monthly Notices of the Royal Astronomical Society 510(2022)2, 2391-2406, Numer 510, 2021, Strona(/y) 2391-2406, ISSN 1365-2966
Wydawca: Royal Astronomical Society
DOI: 10.48550/arxiv.2111.14575

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

Autorzy: F. Garcia, M. Seilmayer, A. Giesecke, F. Stefani
Opublikowane w: Physical Review Letters, Numer 125/26, 2020, Strona(/y) 264501, ISSN 0031-9007
Wydawca: American Physical Society
DOI: 10.1103/physrevlett.125.264501

No evidence for absence of solar dynamo synchronization

Autorzy: Stefani, F.; Beer, J.; Weier, T.
Opublikowane w: Solar Physics, Numer 83, 2023, Strona(/y) 298, ISSN 1573-093X
Wydawca: Springer nature
DOI: 10.1007/s11207-023-02174-x

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

Autorzy: F. Garcia; J. Ogbonna; A. Giesecke; F. Stefani
Opublikowane w: Communications in Nonlinear Science and Numerical Simulation 118(2023), 107030, Numer 118, 2023, Strona(/y) 107030, ISSN 1878-7274
Wydawca: Elsevier
DOI: 10.1016/j.cnsns.2022.107030

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

Autorzy: Ashish Mishra; George Mamatsashvili; Frank Stefani
Opublikowane w: Physical Review Fluids, Numer 7, 2022, Strona(/y) 064802, ISSN 2469-990X
Wydawca: 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

Autorzy: A. Mishra, G. Mamatsashvili, F. Stefani
Opublikowane w: Physical Review Fluids, Numer 8, 2023, Strona(/y) 083902, ISSN 2469-990X
Wydawca: 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

Autorzy: Ferran Garcia, Martin Seilmayer, André Giesecke, Frank Stefani
Opublikowane w: Physica D: Nonlinear Phenomena, Numer 418, 2021, Strona(/y) 132836, ISSN 0167-2789
Wydawca: Elsevier BV
DOI: 10.1016/j.physd.2020.132836

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

Autorzy: Gerrit M. Horstmann, George Mamatsashvili, André Giesecke, Teimuraz V. Zaqarashvili, and Frank Stefani
Opublikowane w: Astrophysical Journal, Numer 944, 2023, Strona(/y) 48, ISSN 0004-637X
Wydawca: 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

Autorzy: Röhrborn, S.; Jüstel, P.; Galindo, V.; Gundrum, T.; Schindler, F.; Stefani, F.; Stepanov, R.; Vogt, T.
Opublikowane w: Magnetohydrodynamics, Numer 58, 2022, Strona(/y) 187-194, ISSN 1574-0579
Wydawca: University of Latvia
DOI: 10.22364/mhd.58.1-2.20

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

Autorzy: F. Garcia
Opublikowane w: Physics of Fluids, Numer 35, 2023, Strona(/y) 111704, ISSN 1089-7666
Wydawca: AIP
DOI: 10.1063/5.0174155

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

Autorzy: Frank Stefani; Emmanuel Dormy; Fernando Garcia
Opublikowane w: Physical Review Fluids, Numer 6, 2021, Strona(/y) 123501, ISSN 2469-990X
Wydawca: 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

Autorzy: Röhrborn, S.; Jüstel, P.; Galindo, V.; Stefani, F.; Stepanov, R.
Opublikowane w: Magnetohydrodynamics, Numer 58, 2022, Strona(/y) 285-292, ISSN 1574-0579
Wydawca: University of Latvia
DOI: 10.48550/arxiv.2209.07173

Prograde and retrograde precession of a fluid-filled cylinder

Autorzy: Federico Pizzi; André Giesecke; Jan Simkanin; Frank Stefani
Opublikowane w: New Journal of Physics, Numer 23, 2021, Strona(/y) 123016, ISSN 1367-2630
Wydawca: Institute of Physics Publishing
DOI: 10.1088/1367-2630/ac3c0f

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

Autorzy: F. Pizzi, G. Mamatsashvili, A. J. Barker, A. Giesecke, F. Stefani
Opublikowane w: Physics of Fluids, Numer 34, 2022, Strona(/y) 125135, ISSN 1089-7666
Wydawca: American Institute ofp Physics
DOI: 10.1063/5.0131035

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

Autorzy: Frank Stefani
Opublikowane w: Climate, Numer 9/11, 2021, Strona(/y) 163, ISSN 2225-1154
Wydawca: MDPI
DOI: 10.3390/cli9110163

A Model of a Tidally Synchronized Solar Dynamo

Autorzy: F. Stefani, A. Giesecke, T. Weier
Opublikowane w: Solar Physics, Numer 294/5, 2019, ISSN 0038-0938
Wydawca: Kluwer Academic Publishers
DOI: 10.1007/s11207-019-1447-1

Chaotic wave dynamics in weakly magnetized spherical Couette flows

Autorzy: Ferran Garcia, Martin Seilmayer, André Giesecke, Frank Stefani
Opublikowane w: Chaos: An Interdisciplinary Journal of Nonlinear Science, Numer 30/4, 2020, Strona(/y) 043116, ISSN 1054-1500
Wydawca: American Institute of Physics
DOI: 10.1063/1.5140577

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

Autorzy: George Mamatsashvili, Frank Stefani, Rainer Hollerbach, Günther Rüdiger
Opublikowane w: Physical Review Fluids, Numer 4/10, 2019, ISSN 2469-990X
Wydawca: APS
DOI: 10.1103/physrevfluids.4.103905

Numerical and theoretical framework for the DRESDYN precession dynamo experiment

Autorzy: Pizzi, F.; Giesecke, A.; Simkanin, J.; Kumar, V.; Gundrum, T.; Stefani, F.
Opublikowane w: Magnetohydrodynamics, Numer 58, 2022, Strona(/y) 445-453, ISSN 1574-0579
Wydawca: University of Latvia
DOI: 10.48550/arxiv.2301.08076

Alfvén wave experiments with liquid rubidium in a pulsed magnetic field

Autorzy: Gundrum, Th.; Forbriger, J.; Herrmannsdörfer, Th.; Mamatsashvili, G.; Schnauck, S.; Stefani, F.; Wosnitza, J.
Opublikowane w: Magnetohydrodynamics, Numer 58, 2022, Strona(/y) 389-395, ISSN 1574-0579
Wydawca: University of Latvia
DOI: 10.48550/arxiv.2301.08463

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

Autorzy: Kiwan Park
Opublikowane w: The Astrophysical Journal, Numer 898/2, 2020, Strona(/y) 112, ISSN 1538-4357
Wydawca: 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

Autorzy: J Ogbonna, F Garcia, T Gundrum, M Seilmayer, F Stefani
Opublikowane w: IOP Conference Series: Materials Science and Engineering, Numer 1234, 2022, Strona(/y) 012004, ISSN 1757-899X
Wydawca: Institute of Physics
DOI: 10.1088/1757-899x/1223/1/012004

Phase coherence and phase jumps in the Schwabe cycle

Autorzy: Frank Stefani, Jürg Beer, André Giesecke, Timo Gloaguen, Martin Seilmayer, Rodion Stepanov, Tom Weier
Opublikowane w: Astronomische Nachrichten, Numer 341/6-7, 2020, Strona(/y) 600-615, ISSN 0004-6337
Wydawca: John Wiley & Sons Ltd.
DOI: 10.1002/asna.202013809

MRI turbulence in accretion discs at large magnetic Prandtl numbers

Autorzy: Held, Loren E.; Mamatsashvili, George
Opublikowane w: Monthly Notices of the Royal Astronomical Society 517(2022)2, 2309-2330, Numer 517, 2022, Strona(/y) 2309-2330, ISSN 1365-2966
Wydawca: Royal Astronomical Society
DOI: 10.1093/mnras/stac2656

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

Autorzy: J. Ogbonna, F. Garcia, T. Gundrum, M. Seilmayer, F. Stefani
Opublikowane w: Physics of Fluids, Numer 32/12, 2020, Strona(/y) 124119, ISSN 1070-6631
Wydawca: American Institute of Physics
DOI: 10.1063/5.0029570

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

Autorzy: Peter Jüstel; Sebastian Röhrborn; Sven Eckert; Vladimir Galindo; Thomas Gundrum; Rodion Stepanov; Frank Stefani
Opublikowane w: Physics of Fluids, Numer 34, 2022, Strona(/y) 104115, ISSN 1089-7666
Wydawca: Americal Institute of Physics
DOI: 10.1063/5.0114035

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

Autorzy: F. Stefani, M. Seilmayer, R. Stepanov, T. Weier
Opublikowane w: Magnetohydrodynamics, Numer 56/2-3, 2020, Strona(/y) 269-280, ISSN 0024-998X
Wydawca: Consultants Bureau
DOI: 10.22364/mhd.56.2-3.18

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

Autorzy: Peter Jüstel, Sebastian Röhrborn, Peter Frick, Vladimir Galindo, Thomas Gundrum, Felix Schindler, Frank Stefani, Rodion Stepanov, Tobias Vogt
Opublikowane w: Physics of Fluids, Numer 32/9, 2020, Strona(/y) 097105, ISSN 1070-6631
Wydawca: 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.

Autorzy: F. Stefani; J. Forbriger; Th. Gundrum; T. Herrmannsdörfer; J. Wosnitza
Opublikowane w: Physical Review Letters, Numer 127, 2021, Strona(/y) 275001, ISSN 1079-7114
Wydawca: 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

Autorzy: F. Garcia, A. Giesecke, F. Stefani
Opublikowane w: Physics of Fluids, Numer 33/4, 2021, Strona(/y) 044105, ISSN 1070-6631
Wydawca: 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

Autorzy: N. Krauter; F. Stefani
Opublikowane w: Sensors, Numer 23, 2023, Strona(/y) 9018, ISSN 1424-8220
Wydawca: Multidisciplinary Digital Publishing Institute (MDPI)
DOI: 10.3390/s23229018

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