Prabhu, A.; Brandenburg, A.; Käpylä, M. J.; Lagg, A.: Helicity proxies from linear polarisation of solar active regions. Astronomy and Astrophysics 641, A46 (2020)
Prabhu, A.; Lagg, A.; Hirzberger, J.; Solanki, S. K.: The magnetic fine structure of the Sun's polar region as revealed by Sunrise. Astronomy and Astrophysics 644, A86 (2020)
Siu-Tapia, A. L.; Lagg, A.; van Noort, M.; Rempel, M.; Solanki, S. K.: Superstrong photospheric magnetic fields in sunspot penumbrae. Astron. Astrophys.; EDP Sciences, Les Ulis Cedex A France 631, A99 (2019)
González Manrique, S. J.; Kuckein, C.; Collados, M.; Denker, C.; Solanki, S. K.; Gömöry, P.; Verma, M.; Balthasar, H.; Lagg, A.; Diercke, A.: Temporal evolution of arch filaments as seen in He I 10 830 Å. Astronomy and Astrophysics 617, A55 (2018)
Löptien, B.; Lagg, A.; van Noort, M.; Solanki, S. K.: Measuring the Wilson depression of sunspots using the divergence-free condition of the magnetic field vector. Astronomy and Astrophysics 619, A42 (2018)
Singh, N. K.; Käpylä, M. J.; Brandenburg, A.; Käpylä, P. J.; Lagg, A.; Virtanen, I.: Bihelical Spectrum of Solar Magnetic Helicity and Its Evolution. The Astrophysical Journal 863 (2), 182 (2018)
Siu-Tapia, A. L.; Rempel, M.; Lagg, A.; Solanki, S. K.: Evershed and Counter-Evershed Flows in Sunspot MHD Simulations. The Astrophysical Journal 852 (2), 66 (2018)
Joshi, J.; Lagg, A.; Hirzberger, J.; Solanki, S. K.: Three-dimensional magnetic structure of a sunspot: Comparison of the photosphere and upper chromosphere. Astronomy and Astrophysics 604, A98 (2017)
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).
Application deadline 1 October 2024. PhD projects in planetary science, solar and stellar physics, solar magnetism, heliophysics, helioseismology, asteroseismology, ...
First Light for Sunrise III: the first tests with real sunlight were successful. The balloon-borne solar observatory should be ready for launch at the end of May.
In analyzing solar observations from the 19th century, scientists are turning to amateur researchers for help. The project will allow to better understand the history of our star.
Astronomical teamwork: By combining data from Solar Orbiter and SDO, a group of researchers has unambiguously determined the magnetic field at the solar surface.