Building up a Unified Theory of Stellar Dynamos

Project Information

UniSDyn

Grant agreement ID: 818665

DOI 10.3030/818665

Project closed

EC signature date 7 December 2018

Start date 1 May 2019

End date 30 April 2024

Funded under

• EXCELLENT SCIENCE - European Research Council (ERC)

Total cost € 1 964 687,50

EU contribution € 1 964 687,50

Coordinated by

AALTO KORKEAKOULUSAATIO SR
Finland

CORDIS provides links to public deliverables and publications of HORIZON projects.

Links to deliverables and publications from FP7 projects, as well as links to some specific result types such as dataset and software, are dynamically retrieved from OpenAIRE .

Publications

Peer reviewed articles (37)

Modeling the interplay between epidemics and regional socio-economics

Author(s): Jan E. Snellman; Rafael A. Barrio; Kimmo K. Kaski; Maarit J. Käpylä
Published in: Physica A, Issue 2, 2022, Page(s) under review, ISSN 0378-4371
Publisher: 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

Author(s): Miikka S. Väisälä, Johannes Pekkilä, Maarit J. Käpylä, Matthias Rheinhardt, Hsien Shang, Ruben Krasnopolsky
Published in: The Astrophysical Journal, Issue 907/2, 2021, Page(s) 83, ISSN 0004-637X
Publisher: University of Chicago Press
DOI: 10.3847/1538-4357/abceca

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

Author(s): Rempel, M. Bellot Rubio L. Bhatia, T. Korpi-Lagg M. J.
Published in: Space Science Reviews, Issue 219, 2023, Page(s) 36, ISSN 0038-6308
Publisher: 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

Author(s): J. Warnecke, M. J. Käpylä
Published in: Astronomy & Astrophysics, Issue 642, 2020, Page(s) A66, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/201936922

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

Author(s): P. J. Käpylä, M. Rheinhardt, A. Brandenburg, M. J. Käpylä
Published in: Astronomy & Astrophysics, Issue 636, 2020, Page(s) A93, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/201935012

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

Author(s): Snellman, J. E., Barrio, R. A., Kaski, K. K. & Korpi-Lagg, M. J.
Published in: Journal of Computational Social Science, Issue under review, 2024, ISSN 2432-2717
Publisher: Springer Nature

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

Author(s): Warnecke, Jörn; Bingert, Sven
Published in: Geophysical & Astrophysical Fluid Dynamics, 2020, Page(s) Volume 114, Issue 1-2, p.261-281, ISSN 0309-1929
Publisher: Taylor & Francis
DOI: 10.1080/03091929.2019.1670173

Inferring magnetic helicity spectrum in spherical domains

Author(s): Prabhu, A. P.; Singh, N. K.; Käpylä, M. J.; Lagg, A.
Published in: Astronomy & Astrophysics, Issue 1, 2021, Page(s) Vol. 654, Article ID A3, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/202141101

Compressible test-field method and its application to shear dynamos

Author(s): Maarit J. Käpylä; Matthias Rheinhardt; Axel Brandenburg
Published in: The Astrophysical Journal, Issue 5, 2022, ISSN 0004-637X
Publisher: University of Chicago Press
DOI: 10.48550/arxiv.2106.01107

Helicity proxies from linear polarisation of solar active regions

Author(s): A. Prabhu, A. Brandenburg, M. J. Käpylä, A. Lagg
Published in: Astronomy & Astrophysics, Issue 641, 2020, Page(s) A46, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/202037614

On the Existence of Shear-current Effects in Magnetized Burgulence

Author(s): Maarit J. Käpylä, Javier Álvarez Vizoso, Matthias Rheinhardt, Axel Brandenburg, Nishant K. Singh
Published in: The Astrophysical Journal, Issue 905/2, 2020, Page(s) 179, ISSN 0004-637X
Publisher: University of Chicago Press
DOI: 10.3847/1538-4357/abc1e8

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

Author(s): Kivistö, S. K., Gent, F. A., Tornikoski, M., Tammi, J., Korpi-Lagg, M. J.
Published in: Astronomy and Astrophysics, Issue submitted, 2024, ISSN 0004-6361
Publisher: Springer Verlag

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

Author(s): J. Zhuleku, J. Warnecke, H. Peter
Published in: Astronomy & Astrophysics, Issue 652, 2021, Page(s) A32, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/202040192

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

Author(s): Gent, F. A., Mac Low, M.-M. & Korpi-Lagg, M. J.
Published in: The Astrophysical Journal, Issue 961, 2024, Page(s) 7, ISSN 0004-637X
Publisher: 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

Author(s): 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
Published in: Journal of Open Source Software, Issue 6/58, 2021, Page(s) 2807, ISSN 2475-9066
Publisher: JOSS
DOI: 10.21105/joss.02807

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

Author(s): Gent, F. A., Mac Low M.-M., Korpi-Lagg, M. J., and Singh, N. K
Published in: The Astrophysical Journal, Issue 943, 2023, Page(s) 176, ISSN 0004-637X
Publisher: University of Chicago Press
DOI: 10.3847/1538-4357/acac20

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

Author(s): J. J. Lehtinen; M. J. Käpylä; T. Hackman; O. Kochukhov; T. Willamo; S. C. Marsden; S. V. Jeffers; G. W. Henry; L. Jetsu
Published in: Astronomy and Astrophysics, Issue 4, 2022, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.48550/arxiv.1909.11028

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

Author(s): Elizabeth M. Cole-Kodikara, Maarit J. Käpylä, Jyri J. Lehtinen, Thomas Hackman, Ilya V. Ilyin, Nikolai Piskunov, Oleg Kochukhov
Published in: Astronomy & Astrophysics, Issue 629, 2019, Page(s) A120, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/201935729

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

Author(s): S. Nikbakhsh, E. I. Tanskanen, M. J. Käpylä, T. Hackman
Published in: Astronomy & Astrophysics, Issue 629, 2019, Page(s) A45, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/201935486

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

Author(s): M. Viviani, M. J. Käpylä, J. Warnecke, P. J. Käpylä, M. Rheinhardt
Published in: The Astrophysical Journal, Issue 886/1, 2019, Page(s) 21, ISSN 1538-4357
Publisher: IOPScience
DOI: 10.3847/1538-4357/ab3e07

f -mode strengthening from a localised bipolar subsurface magnetic field

Author(s): Nishant K. Singh, Harsha Raichur, Maarit J. Käpylä, Matthias Rheinhardt, Axel Brandenburg, Petri J. Käpylä
Published in: Geophysical & Astrophysical Fluid Dynamics, Issue 114/1-2, 2020, Page(s) 196-212, ISSN 0309-1929
Publisher: Taylor & Francis
DOI: 10.1080/03091929.2019.1653461

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

Author(s): P. J. Käpylä, F. A. Gent, N. Olspert, M. J. Käpylä, A. Brandenburg
Published in: Geophysical & Astrophysical Fluid Dynamics, Issue 114/1-2, 2020, Page(s) 8-34, ISSN 0309-1929
Publisher: Taylor & Francis
DOI: 10.1080/03091929.2019.1571586

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

Author(s): M. J. Korpi-Lagg; A. Korpi-Lagg; N. Olspert; H.-L. Truong
Published in: Astronomy and Astrophysics, Issue 1, 2022, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.48550/arxiv.2205.04419

Common dynamo scaling in slowly rotating young and evolved stars

Author(s): Jyri J. Lehtinen, Federico Spada, Maarit J. Käpylä, Nigul Olspert, Petri J. Käpylä
Published in: Nature Astronomy, Issue 4/7, 2020, Page(s) 658-662, ISSN 2397-3366
Publisher: Nature Publishing Group
DOI: 10.1038/s41550-020-1039-x

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

Author(s): Warnecke, J., Korpi-Lagg, M. J., Gent, F. A., Rheinhardt, M.
Published in: Nature Astronomy, Issue 7, 2023, Page(s) 662, ISSN 2397-3366
Publisher: Springer Nature
DOI: 10.1038/s41550-023-01975-1

Stellar coronal X-ray emission and surface magnetic flux

Author(s): J. Zhuleku, J. Warnecke, H. Peter
Published in: Astronomy & Astrophysics, Issue 640, 2020, Page(s) A119, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/202038022

Socio-economic pandemic modelling: Case of Spain

Author(s): Snellman, J., Barreiro, N., Barrio, R., Ventura, C., Govezensky, T., Kaski, K., and Korpi-Lagg, M. J.
Published in: Scientific Reports, Issue 14, 2024, Page(s) 817, ISSN 2045-2322
Publisher: 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

Author(s): A. Barekat, M. J. Käpylä, P. J. Käpylä, E. P. Gilson, H. Ji
Published in: Astronomy & Astrophysics, 2021, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/202040052

Computational approaches to modeling dynamos in galaxies

Author(s): Korpi-Lagg, M. J., Mac Low, M.-M., Gent, F. A.
Published in: Living reviews on Computational Astrophysics, Issue under review, 2024, ISSN 2365-0524
Publisher: Springer Nature

Shapes of stellar activity cycles

Author(s): T. Willamo, T. Hackman, J. J. Lehtinen, M. J. Käpylä, N. Olspert, M. Viviani, J. Warnecke
Published in: Astronomy & Astrophysics, Issue 638, 2020, Page(s) A69, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/202037666

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

Author(s): Johannes Pekkilä; Miikka S. Väisälä; Maarit J. Käpylä; Matthias Rheinhardt; Oskar Lappi
Published in: Parallel Computing, Issue 3, 2022, ISSN 0167-8191
Publisher: 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

Author(s): Jyri J. Lehtinen, Maarit J. Käpylä, Nigul Olspert, Federico Spada
Published in: The Astrophysical Journal, Issue 910/2, 2021, Page(s) 110, ISSN 0004-637X
Publisher: University of Chicago Press
DOI: 10.3847/1538-4357/abe621

From convective stellar dynamo simulations to Zeeman-Doppler images

Author(s): Hackman, T., Kochukhov, O, Viviani, M.,Warnecke, J., Korpi-Lagg, M. J., and Lehtinen, J. J.
Published in: Astronomy and Astrophysics, Issue 12, 2024, Page(s) A156, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/202347144

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

Author(s): M. Viviani, M. J. Käpylä
Published in: Astronomy & Astrophysics, Issue 645, 2021, Page(s) A141, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/202038603

Small-scale Dynamo in Supernova-driven Interstellar Turbulence

Author(s): Frederick A. Gent, Mordecai-Mark Mac Low, Maarit J. Käpylä, Nishant K. Singh
Published in: The Astrophysical Journal Letters, Issue 910/2, 2021, Page(s) L15, ISSN 2041-8205
Publisher: Institute of Physics Publishing
DOI: 10.3847/2041-8213/abed59

Constraining Global Solar Models through Helioseismic Analysis

Author(s): Andrey M. Stejko; Alexander G. Kosovichev; Nicholas A. Featherstone; Gustavo Guerrero; Bradley W. Hindman; Loren I. Matilsky; Jörn Warnecke
Published in: The Astrophysical Journal, Issue 1, 2022, ISSN 0004-637X
Publisher: University of Chicago Press
DOI: 10.48550/arxiv.2204.05207

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

Author(s): Jörn Warnecke; Matthias Rheinhardt; Mariangela Viviani; Frederick A. Gent; Simo Tuomisto; Maarit J. Käpylä
Published in: The Astrophysical Journal Letters, Issue 1, 2021, Page(s) Vol. 919, L13, ISSN 0004-637X
Publisher: University of Chicago Press
DOI: 10.3847/2041-8213/ac1db5

Conference proceedings (2)

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

Author(s): Korpi-Lagg, M. J.
Published in: 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, Issue 1, 2023
Publisher: Zenodo
DOI: 10.5281/zenodo.7575650

Observability, Monitoring, and In Situ Analytics in Exascale Applications

Author(s): Dewi Yokelson (University of Oregon), Oskar Lappi (University of Helsinki), Srinivasan Ramesh (NVIDIA), Miikka Vaisala (Academia Sinica), Kevin Huck (University of Oregon), Touko Puro (University of Helsinki), Boyana Norris (University of Oregon), Maarit Korpi-Laag (Aalto University), Keijo Heljanko (University of Helsinki), and Allen Malony (University of Oregon)
Published in: Proceedings of the Cray Usr Group meeting 2023, Helsinki, 2023
Publisher: cug.org public realm