Koldobskiy, S. A.; Kähkönen, R.; Hofer, B.; Krivova, N. A.; Kovaltsov, G. A.; Usoskin, I. G.: Time Lag Between Cosmic-Ray and Solar Variability: Sunspot Numbers and Open Solar Magnetic Flux. Solar Physics 297, 38 (2022)
Usoskin, I.G.; Solanki, S. K.; Krivova, N. A.; Hofer, B.; Kovaltsov, G.A.; Wacker, L.; Brehm, N.; Kromer, B.: Solar cyclic activity over the last millennium reconstructed from annual 14C data. Astronomy and Astrophysics 649, A141 (2021)
Hofer, B.; Bourdin, P.-A.: Application of the Electromotive Force as a Shock Front Indicator in the Inner Heliosphere. The Astrophysical Journal 878 (1), 30 (2019)
Analyzing the high spatial resolution solar Ca II H and K emission data obtained by the SUNRISE mission and building a model of other stars more active than the Sun
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.
First icy cold, then midnight sun: at the Arctic Circle, the team will prepare the next flight of the balloon-borne solar observatory - and hopes for solar fireworks.
Astronomical teamwork: By combining data from Solar Orbiter and SDO, a group of researchers has unambiguously determined the magnetic field at the solar surface.
Images from ESA’s Solar Orbiter offer the best look yet at a source region of the solar wind - and challenge our view of the continuous particle stream from the Sun.