Krivova, N. A.; Solanki, S. K.; Fligge, M.; Unruh, Y. C.: Reconstruction of solar irradiance variations in Cycle 23: Is solar surface magnetism the cause? Astronomy and Astrophysics 399, pp. L1 - L4 (2003)
Knaack, R.; Fligge, M.; Solanki, S. K.; Unruh, Y. C.: The influence of an inclined rotation axis on solar irradiance variations. Astronomy and Astrophysics 376, pp. 1080 - 1089 (2001)
Unruh, Y. C.; Solanki, S. K.; Fligge, M.: Modelling solar irradiance variations: Comparison with observations, including line-ratio variations. Space Science Reviews 94, pp. 145 - 152 (2000)
Knaack, R.; Fligge, M.; Solanki, S. K.; Unruh, Y. C.: Stellar irradiance variations caused by magnetic activity: the influence of an inclined rotation axis. In: Magnetic Fields Across the Hertzsprung-Russell Diagram, pp. 227 - 230 (Eds. Mathys, G.; Solanki, S. K.; Wickramasinghe, D. T.). Astronomical Society of the Pacific, San Francisco/CA (2001)
Solanki, S. K.; Fligge, M.; Unruh, Y. C.: Variations of the solar spectral irradiance. In: Recent Insights into the Physics of the Sun and Heliosphere: Highlights from SOHO and Other Space Missions, pp. 66 - 77 (Eds. Brekke, P.; Fleck, B.; Gurman, J. B.). (2001)
Unruh, Y. C.; Knaack, R.; Fligge, M.; Solanki, S. K.: Are the Sun's brightness variations really tamer than those of other comparable solar-type stars? In: Cool Stars, Stellar Systems and the Sun XI, pp. CD - 748 (Eds. López, G.; J., R.; Rebolo; R.; Osorio, Z. et al.). Astronomical Society of the Pacific, San Francisco (2001)
Fligge, M.; Solanki, S. K.; Meunier, N.; Unruh, Y. C.: Solar surface magnetism and the increase of solar irradiance between activity minimum and maximum. In: Proc. 1st Solar & Space Weather Euroconference ``The Solar Cycle and Terrestrial Climate'', Santa Cruz de Tenerife, Spain, pp. 117 - 121 (Ed. Wilson, A.). ESA Publ. Div., Noordwijk (2000)
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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.