Astroinformatics
The group develops and utilises high-performance computing tools for simulating and analysing data from complex (astro)physical systems, such as turbulent fluids, the Sun, interstellar matter in galaxies. The developed methods include simulation tools accelerated with graphics processing units, and data-analysis tools employing machine learning. Our current projects aim at understanding, predicting, and mitigating the harmful effects from solar magnetic activity (ERC consolidator grant UniSDyn, ERC proof-of-concept grant SYCOS).
News
Astroinformatics research group news
LUMI-G pilot
VISSI-project was selected as LUMI-G pilot
Surface gravity oscillation mode shows remarkable solar cycle dependence
12 years of satellite data was used to reveal an enigmatic behaviour of the surface-gravity wave energy contained in the most quiet regions on solar surface.
Evidence of turbulent dynamo action in the Sun
Astroinformatics research group has determined magnetic helicity spectrum from the solar surface observations using the recently developed two-scale formalism.
Small-Scale Dynamo in Supernova-Driven Interstellar Turbulence?
Yes: simulations confirm small-scale dynamo action in the interstellar medium.
People
Latest publications
Mean fields and fluctuations in compressible magnetohydrodynamic flows
James F. Hollins, Graeme R. Sarson, Cetin Can Evirgen, Anvar Shukurov, Andrew Fletcher, Frederick A. Gent
2022
GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS
Solar-cycle variation of quiet-Sun magnetism and surface gravity oscillation mode
M. J. Korpi-Lagg, A. Korpi-Lagg, N. Olspert, H. L. Truong
2022
Astronomy and Astrophysics
Compressible Test-field Method and Its Application to Shear Dynamos
Maarit J. Käpylä, Matthias Rheinhardt, Axel Brandenburg
2022
The Astrophysical Journal
Topological changes in the magnetic field of LQ Hya during an activity minimum
J. J. Lehtinen, M. J. Käpylä, T. Hackman, O. Kochukhov, T. Willamo, S. C. Marsden, S. V. Jeffers, G. W. Henry, L. Jetsu
2022
Astronomy and Astrophysics
Scalable communication for high-order stencil computations using CUDA-aware MPI
Johannes Pekkilä, Miikka S. Väisälä, Maarit J. Käpylä, Matthias Rheinhardt, Oskar Lappi
2022
PARALLEL COMPUTING
Modelling the interplay between epidemics and regional socio-economics
Jan E. Snellman, Rafael A. Barrio, Kimmo K. Kaski, Maarit J. Käpylä
2022
Physica A: Statistical Mechanics and its Applications
Zeeman-Doppler imaging of five young solar-type stars
T. Willamo, J. J. Lehtinen, T. Hackman, M. J. Käpylä, O. Kochukhov, S. V. Jeffers, H. Korhonen, S. C. Marsden
2022
Astronomy and Astrophysics
Generation of mean flows in rotating anisotropic turbulence: The case of solar near-surface shear layer
A. Barekat, M. J. Käpylä, P. J. Käpylä, E. P. Gilson, Hantao Ji
2021
Astronomy & Astrophysics
Relic Gravitational Waves from the Chiral Magnetic Effect
Axel Brandenburg, Yutong He, Tina Kahniashvili, Matthias Rheinhardt, Jennifer Schober
2021
The Astrophysical Journal
Small-scale Dynamo in Supernova-driven Interstellar Turbulence
Frederick A. Gent, Mordecai-Mark Mac Low, Maarit J. Käpylä, Nishant K. Singh
2021
Astrophysical Journal Letters