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. One of our current projects is to understand, predict, and mitigate the harmful effects from solar magnetic activity (ERC consolidator grant UniSDyn).
News
Astroinformatics research group news
Modern HPC tools course
Modern HPC tools course: new course starting on Period II.
LUMI-G pilot
VISSI-project was selected as LUMI-G pilot
The Sun shows signatures of turbulent dynamo action
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
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
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
Compressible Test-field Method and Its Application to Shear Dynamos
Maarit J. Käpylä, Matthias Rheinhardt, Axel Brandenburg
2022
The Astrophysical Journal
Inferring magnetic helicity spectrum in spherical domains
A. P. Prabhu, N. K. Singh, M. J. Käpylä, A. Lagg
2021
Astronomy and Astrophysics
Investigating global convective dynamos with mean-field models: full spectrum of turbulent effects required
Jörn Warnecke, Matthias Rheinhardt, Mariangela Viviani, Frederick Gent, Simo Tuomisto, Maarit J. Käpylä
2021
Astrophysical Journal Letters
Interaction of large- and small-scale dynamos in isotropic turbulent flows from GPU-accelerated simulations
Miikka Väisälä, Johannes Pekkilä, Maarit Käpylä, Matthias Rheinhardt, Hsien Shang, Ruben Krasnopolsky
2021
The Astrophysical Journal
Physically motivated heat conduction treatment in simulations of solar-like stars: effects on dynamo transitions
M. Viviani, M. J. Käpylä
2021
Astronomy & Astrophysics
Social structure formation in a network of agents playing a hybrid of ultimatum and dictator games
Jan E. Snellman, Rafael A. Barrio, Kimmo K. Kaski
2021
Physica A: Statistical Mechanics and its Applications