Lehtinen, J. J.; Käpylä, M. J.; Hackman, T.; Kochukhov, O.; Willamo, T.; Marsden, S.C.; Jeffers, S. V.; Henry, G.W.; Jetsu, L.: Topological changes in the magnetic field of LQ Hya during an activity minimum. Astronomy and Astrophysics 660, A141 (2022)
Willamo, T.; Lehtinen, J. J.; Hackman, T.; Käpylä, M. J.; Kochukhov, O.; Jeffers, S. V.; Korhonen, H.; Marsden, S. C.: Zeeman-Doppler imaging of five young solar-type stars. Astronomy and Astrophysics 659, A71 (2022)
Barekat, A.; Käpylä, M. J.; Käpylä, P.J.; Gilson, E.P.; Ji, H.: Generation of mean flows in rotating anisotropic turbulence: The case of solar near-surface shear layer. Astronomy and Astrophysics 655, A79 (2021)
Väisälä, M. S.; Pekkilä, J.; Käpylä, M. J.; Rheinhardt, M.; Shang, H.; Krasnopolsky, R.: Interaction of Large- and Small-scale Dynamos in Isotropic Turbulent Flows from GPU-accelerated Simulations. The Astrophysical Journal 907 (2), 83 (2021)
Käpylä, P. J.; Gent, F. A.; Olspert, N.; Käpylä, M. J.; Brandenburg, A.: Sensitivity to luminosity, centrifugal force, and boundary conditions in spherical shell convection. Geophysical and Astrophysical Fluid Dynamics 14 (1-2), pp. 8 - 34 (2020)
Käpylä, P. J.; Rheinhardt, M.; Brandenburg, A.; Käpylä, M. J.: Turbulent viscosity and magnetic Prandtl number from simulations of isotropically forced turbulence. Astronomy and Astrophysics 636, A93 (2020)
Singh, N. K.; Raichur, H.; Käpylä, M. J.; Rheinhardt, M.; Brandenburg, A.; Käpylä, P. J.: f-mode strengthening from a localised bipolar subsurface magnetic field. Geophysical and Astrophysical Fluid Dynamics 114 (1-2), pp. 196 - 212 (2020)
Cole-Kodikara, E. M.; Käpylä, M. J.; Lehtinen, J.; Hackman, T.; Ilyin, I. V.; Piskunov, N.; Kochukhov, O.: Spot evolution on LQ Hya from 2006–2017: temperature maps based on SOFIN and FIES data. Astronomy and Astrophysics 629, A120 (2019)
The Sun’s planets and small objects have undergone substantial evolution. Deciphering the history of our cosmic home is not a simple task even though we now have access to a multitude of data gathered by space missions, remote observations, and laboratory studies of diverse samples. A significant fraction of materials available for the study of planetary bodies come from meteorites.
The Planetary Plasma Environments group (PPE) has a strong heritage in the exploration of planetary magnetospheres and space plasma interactions throughout the solar system. It has contributed instruments to several past missions that flew-by or orbited Jupiter (Galileo, Cassini, Ulysses). The PPE participates in the JUICE mission by contributing hardware and scientific expertise to the Particle Environment Package (PEP).
The Solar Lower Atmosphere and Magnetism (SLAM) group covers many exciting subjects in solar physics, focussing on the development and testing of highly novel solar instrumentation, reduction and analysis of highest quality solar observations, or improving and developing advanced techniques for the analysis of solar observations.
Inversion codes are used to aid the detailed interpretation of solar spectro-polarimetric data. This computer code attempts to find the atmospheric structure that produced an observed spectrum by minimizing the difference between the observed spectrum and a Stokes spectrum.
The MPS is one of the leading institutes worldwide in building instruments for solar research, both for ground based observatories as well as for balloon and space-borne missions. Scientists and engineers of MPS conceive new observing methods and develop novel instruments of highest technological complexity. These instruments are built in house, tested, calibrated, and used at the best solar observatories in the world, or delivered to NASA and ESA to be launched to space.