Building up a Unified Theory of Stellar Dynamos

Publicaciones

Modeling the interplay between epidemics and regional socio-economics

Autores: Jan E. Snellman; Rafael A. Barrio; Kimmo K. Kaski; Maarit J. Käpylä
Publicado en: Physica A, Edición 2, 2022, Página(s) under review, ISSN 0378-4371
Editor: Elsevier BV
DOI: 10.21203/rs.3.rs-500405/v1

Interaction of Large- and Small-scale Dynamos in Isotropic Turbulent Flows from GPU-accelerated Simulations

Autores: Miikka S. Väisälä, Johannes Pekkilä, Maarit J. Käpylä, Matthias Rheinhardt, Hsien Shang, Ruben Krasnopolsky
Publicado en: The Astrophysical Journal, Edición 907/2, 2021, Página(s) 83, ISSN 0004-637X
Editor: University of Chicago Press
DOI: 10.3847/1538-4357/abceca

Small-scale dynamos: from idealized models to solar and stellar applications

Autores: Rempel, M. Bellot Rubio L. Bhatia, T. Korpi-Lagg M. J.
Publicado en: Space Science Reviews, Edición 219, 2023, Página(s) 36, ISSN 0038-6308
Editor: Kluwer Academic Publishers
DOI: 10.1007/s11214-023-00981-z

Rotational dependence of turbulent transport coefficients in global convective dynamo simulations of solar-like stars

Autores: J. Warnecke, M. J. Käpylä
Publicado en: Astronomy & Astrophysics, Edición 642, 2020, Página(s) A66, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/201936922

Turbulent viscosity and magnetic Prandtl number from simulations of isotropically forced turbulence

Autores: P. J. Käpylä, M. Rheinhardt, A. Brandenburg, M. J. Käpylä
Publicado en: Astronomy & Astrophysics, Edición 636, 2020, Página(s) A93, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/201935012

Exploration of the effects of epidemics on the regional socio-economics: a modelling approach

Autores: Snellman, J. E., Barrio, R. A., Kaski, K. K. & Korpi-Lagg, M. J.
Publicado en: Journal of Computational Social Science, Edición under review, 2024, ISSN 2432-2717
Editor: Springer Nature

Non-Fourier description of heat flux evolution in 3D MHD simulations of the solar corona

Autores: Warnecke, Jörn; Bingert, Sven
Publicado en: Geophysical & Astrophysical Fluid Dynamics, 2020, Página(s) Volume 114, Edición 1-2, p.261-281, ISSN 0309-1929
Editor: Taylor & Francis
DOI: 10.1080/03091929.2019.1670173

Inferring magnetic helicity spectrum in spherical domains

Autores: Prabhu, A. P.; Singh, N. K.; Käpylä, M. J.; Lagg, A.
Publicado en: Astronomy & Astrophysics, Edición 1, 2021, Página(s) Vol. 654, Article ID A3, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/202141101

Compressible test-field method and its application to shear dynamos

Autores: Maarit J. Käpylä; Matthias Rheinhardt; Axel Brandenburg
Publicado en: The Astrophysical Journal, Edición 5, 2022, ISSN 0004-637X
Editor: University of Chicago Press
DOI: 10.48550/arxiv.2106.01107

Helicity proxies from linear polarisation of solar active regions

Autores: A. Prabhu, A. Brandenburg, M. J. Käpylä, A. Lagg
Publicado en: Astronomy & Astrophysics, Edición 641, 2020, Página(s) A46, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/202037614

On the Existence of Shear-current Effects in Magnetized Burgulence

Autores: Maarit J. Käpylä, Javier Álvarez Vizoso, Matthias Rheinhardt, Axel Brandenburg, Nishant K. Singh
Publicado en: The Astrophysical Journal, Edición 905/2, 2020, Página(s) 179, ISSN 0004-637X
Editor: University of Chicago Press
DOI: 10.3847/1538-4357/abc1e8

Almostfifty years of Metsähovi solar observations on 37 GHz with recovered digitised historical maps

Autores: Kivistö, S. K., Gent, F. A., Tornikoski, M., Tammi, J., Korpi-Lagg, M. J.
Publicado en: Astronomy and Astrophysics, Edición submitted, 2024, ISSN 0004-6361
Editor: Springer Verlag

Stellar X-rays and magnetic activity in 3D MHD coronal models

Autores: J. Zhuleku, J. Warnecke, H. Peter
Publicado en: Astronomy & Astrophysics, Edición 652, 2021, Página(s) A32, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/202040192

Scalable communication for high-order stencil computations using CUDA-aware MPI

Autores: Pekkilä, Johannes; Väisälä, Miikka S.; Käpylä, Maarit J.; Rheinhardt, Matthias; Lappi, Oskar
Publicado en: Parallel Computing, Edición 1, 2022, ISSN 0167-8191
Editor: Elsevier BV

Transition from small-scale to large-scale dynamo in a supernova-driven, multiphase medium

Autores: Gent, F. A., Mac Low, M.-M. & Korpi-Lagg, M. J.
Publicado en: The Astrophysical Journal, Edición 961, 2024, Página(s) 7, ISSN 0004-637X
Editor: University of Chicago Press
DOI: 10.3847/1538-4357/ad0da0

The Pencil Code, a modular MPI code for partial differential equations and particles: multipurpose and multiuser-maintained

Autores: The Collaboration, Axel Brandenburg, Anders Johansen, Philippe Bourdin, Wolfgang Dobler, Wladimir Lyra, Matthias Rheinhardt, Sven Bingert, Nils Haugen, Antony Mee, Frederick Gent, Natalia Babkovskaia, Chao-Chin Yang, Tobias Heinemann, Boris Dintrans, Dhrubaditya Mitra, Simon Candelaresi, Jörn Warnecke, Petri Käpylä, Andreas Schreiber, Piyali Chatterjee, Maarit Käpylä, Xiang-Yu Li, Jonas Krüg
Publicado en: Journal of Open Source Software, Edición 6/58, 2021, Página(s) 2807, ISSN 2475-9066
Editor: JOSS
DOI: 10.21105/joss.02807

The small-scale dynamo in a multiphase supernova-driven medium

Autores: Gent, F. A., Mac Low M.-M., Korpi-Lagg, M. J., and Singh, N. K
Publicado en: The Astrophysical Journal, Edición 943, 2023, Página(s) 176, ISSN 0004-637X
Editor: University of Chicago Press
DOI: 10.3847/1538-4357/acac20

Topological changes in the magnetic field of LQ Hya during an activity minimum

Autores: Lehtinen, Jyri J.; Käpylä, Maarit J.; Hackman, Thomas; Kochukhov, Oleg; Willamo, Teemu; Marsden, Stephen C.; Jeffers, Sandra V.; Henry, Gregory W.; Jetsu, Lauri
Publicado en: Astronomy & Astrophysics, Edición 3, 2021, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/202141649

Topological changes in the magnetic field of LQ Hya during an activity minimum

Autores: J. J. Lehtinen; M. J. Käpylä; T. Hackman; O. Kochukhov; T. Willamo; S. C. Marsden; S. V. Jeffers; G. W. Henry; L. Jetsu
Publicado en: Astronomy and Astrophysics, Edición 4, 2022, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.48550/arxiv.1909.11028

Spot evolution on LQ Hya from 2006–2017: temperature maps based on SOFIN and FIES data

Autores: Elizabeth M. Cole-Kodikara, Maarit J. Käpylä, Jyri J. Lehtinen, Thomas Hackman, Ilya V. Ilyin, Nikolai Piskunov, Oleg Kochukhov
Publicado en: Astronomy & Astrophysics, Edición 629, 2019, Página(s) A120, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/201935729

Differences in the solar cycle variability of simple and complex active regions during 1996–2018

Autores: S. Nikbakhsh, E. I. Tanskanen, M. J. Käpylä, T. Hackman
Publicado en: Astronomy & Astrophysics, Edición 629, 2019, Página(s) A45, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/201935486

Stellar Dynamos in the Transition Regime: Multiple Dynamo Modes and Antisolar Differential Rotation

Autores: M. Viviani, M. J. Käpylä, J. Warnecke, P. J. Käpylä, M. Rheinhardt
Publicado en: The Astrophysical Journal, Edición 886/1, 2019, Página(s) 21, ISSN 1538-4357
Editor: IOPScience
DOI: 10.3847/1538-4357/ab3e07

f -mode strengthening from a localised bipolar subsurface magnetic field

Autores: Nishant K. Singh, Harsha Raichur, Maarit J. Käpylä, Matthias Rheinhardt, Axel Brandenburg, Petri J. Käpylä
Publicado en: Geophysical & Astrophysical Fluid Dynamics, Edición 114/1-2, 2020, Página(s) 196-212, ISSN 0309-1929
Editor: Taylor & Francis
DOI: 10.1080/03091929.2019.1653461

Sensitivity to luminosity, centrifugal force, and boundary conditions in spherical shell convection

Autores: P. J. Käpylä, F. A. Gent, N. Olspert, M. J. Käpylä, A. Brandenburg
Publicado en: Geophysical & Astrophysical Fluid Dynamics, Edición 114/1-2, 2020, Página(s) 8-34, ISSN 0309-1929
Editor: Taylor & Francis
DOI: 10.1080/03091929.2019.1571586

Solar-Cycle Variation of quiet-Sun Magnetism and Surface Gravity Oscillation Mode

Autores: M. J. Korpi-Lagg; A. Korpi-Lagg; N. Olspert; H.-L. Truong
Publicado en: Astronomy and Astrophysics, Edición 1, 2022, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.48550/arxiv.2205.04419

Common dynamo scaling in slowly rotating young and evolved stars

Autores: Jyri J. Lehtinen, Federico Spada, Maarit J. Käpylä, Nigul Olspert, Petri J. Käpylä
Publicado en: Nature Astronomy, Edición 4/7, 2020, Página(s) 658-662, ISSN 2397-3366
Editor: Nature Publishing Group
DOI: 10.1038/s41550-020-1039-x

Numerical evidence for a small-scale dynamo approaching solar magnetic Prandtl numbers

Autores: Warnecke, J., Korpi-Lagg, M. J., Gent, F. A., Rheinhardt, M.
Publicado en: Nature Astronomy, Edición 7, 2023, Página(s) 662, ISSN 2397-3366
Editor: Springer Nature
DOI: 10.1038/s41550-023-01975-1

Stellar coronal X-ray emission and surface magnetic flux

Autores: J. Zhuleku, J. Warnecke, H. Peter
Publicado en: Astronomy & Astrophysics, Edición 640, 2020, Página(s) A119, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/202038022

Socio-economic pandemic modelling: Case of Spain

Autores: Snellman, J., Barreiro, N., Barrio, R., Ventura, C., Govezensky, T., Kaski, K., and Korpi-Lagg, M. J.
Publicado en: Scientific Reports, Edición 14, 2024, Página(s) 817, ISSN 2045-2322
Editor: Nature Publishing Group
DOI: 10.1038/s41598-023-44637-y

Generation of mean flows in rotating anisotropic turbulence: The case of solar near-surface shear layer

Autores: A. Barekat, M. J. Käpylä, P. J. Käpylä, E. P. Gilson, H. Ji
Publicado en: Astronomy & Astrophysics, 2021, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/202040052

Computational approaches to modeling dynamos in galaxies

Autores: Korpi-Lagg, M. J., Mac Low, M.-M., Gent, F. A.
Publicado en: Living reviews on Computational Astrophysics, Edición under review, 2024, ISSN 2365-0524
Editor: Springer Nature

Shapes of stellar activity cycles

Autores: T. Willamo, T. Hackman, J. J. Lehtinen, M. J. Käpylä, N. Olspert, M. Viviani, J. Warnecke
Publicado en: Astronomy & Astrophysics, Edición 638, 2020, Página(s) A69, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/202037666

Scalable communication for high-order stencil computations using CUDA-aware MPI

Autores: Johannes Pekkilä; Miikka S. Väisälä; Maarit J. Käpylä; Matthias Rheinhardt; Oskar Lappi
Publicado en: Parallel Computing, Edición 3, 2022, ISSN 0167-8191
Editor: Elsevier BV
DOI: 10.1016/j.parco.2022.102904

A Knee Point in the Rotation–Activity Scaling of Late-type Stars with a Connection to Dynamo Transitions

Autores: Jyri J. Lehtinen, Maarit J. Käpylä, Nigul Olspert, Federico Spada
Publicado en: The Astrophysical Journal, Edición 910/2, 2021, Página(s) 110, ISSN 0004-637X
Editor: University of Chicago Press
DOI: 10.3847/1538-4357/abe621

From convective stellar dynamo simulations to Zeeman-Doppler images

Autores: Hackman, T., Kochukhov, O, Viviani, M.,Warnecke, J., Korpi-Lagg, M. J., and Lehtinen, J. J.
Publicado en: Astronomy and Astrophysics, Edición 12, 2024, Página(s) A156, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/202347144

Physically motivated heat-conduction treatment in simulations of solar-like stars: effects on dynamo transitions

Autores: M. Viviani, M. J. Käpylä
Publicado en: Astronomy & Astrophysics, Edición 645, 2021, Página(s) A141, ISSN 0004-6361
Editor: Springer Verlag
DOI: 10.1051/0004-6361/202038603

Small-scale Dynamo in Supernova-driven Interstellar Turbulence

Autores: Frederick A. Gent, Mordecai-Mark Mac Low, Maarit J. Käpylä, Nishant K. Singh
Publicado en: The Astrophysical Journal Letters, Edición 910/2, 2021, Página(s) L15, ISSN 2041-8205
Editor: Institute of Physics Publishing
DOI: 10.3847/2041-8213/abed59

Constraining Global Solar Models through Helioseismic Analysis

Autores: Andrey M. Stejko; Alexander G. Kosovichev; Nicholas A. Featherstone; Gustavo Guerrero; Bradley W. Hindman; Loren I. Matilsky; Jörn Warnecke
Publicado en: The Astrophysical Journal, Edición 1, 2022, ISSN 0004-637X
Editor: University of Chicago Press
DOI: 10.48550/arxiv.2204.05207

Investigating Global Convective Dynamos with Mean-field Models: Full Spectrum of Turbulent Effects Required

Autores: Jörn Warnecke; Matthias Rheinhardt; Mariangela Viviani; Frederick A. Gent; Simo Tuomisto; Maarit J. Käpylä
Publicado en: The Astrophysical Journal Letters, Edición 1, 2021, Página(s) Vol. 919, L13, ISSN 0004-637X
Editor: University of Chicago Press
DOI: 10.3847/2041-8213/ac1db5

Compressible test-field method and its application to shear dynamos

Autores: Käpylä, Maarit J.; Rheinhardt, Matthias; Brandenburg, Axel
Publicado en: The Astrophysical Journal, Edición 2, 2022, ISSN 0004-637X
Editor: University of Chicago Press

The role of dynamo instabilities in the dynamics of solar-like cool stars

Autores: Korpi-Lagg, M. J.
Publicado en: The 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS21), held 4-8 July, 2022 in Toulouse, France. Online at https://coolstars21.github.io/, id.148, Edición 1, 2023
Editor: Zenodo
DOI: 10.5281/zenodo.7575650

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