Chatzistergos, T.; Krivova, N. A.; Ermolli, I.: Understanding the secular variability of solar irradiance: the potential of Ca II K observations. Journal of Space Weather and Space Climate 14, p. 9 (2024)
Chatzistergos, T.; Krivova, N. A.; Ermolli, I.: Understanding the secular variability of solar irradiance: the potential of Ca II K observations. Journal of Space Weather and Space Climate 14, p. 9 (2024)
Jha, B. K.; Chatzistergos, T.; Banerjee, D.; Ermolli, I.; Krivova, N. A.; Solanki, S. K.; Priyadarshi, A.: Butterfly Diagram and Other Properties of Plage Areas from Kodaikanal Ca II K Photographs Covering 1904 – 2007. Solar Physics 299, p. 166 (2024)
Pevtsov, A. A.; Nandy, D.; Usoskin, I.; Pevtsov, A. A.; Corti, C.; Lefèvre, L.; Owens, M.; Li, G.; Krivova, N.; Saha, C.et al.; Perri, B.; Brun, A. S.; Strugarek, A.; Dayeh, M. A.; Nagovitsyn, Y. A.; Erdélyi, R.: Long-term solar variability: ISWAT S1 cluster review for COSPAR space weather roadmap. Advances in Space Research (2023)
Sowmya, K.; Shapiro, A. I.; Rouppe van der Voort, L. H. M.; Krivova, N. A.; Solanki, S. K.: Modeling Stellar Ca II H and K Emission Variations: Spot Contribution to the S-index. The Astrophysical Journal 956, p. L10 (2023)
Chatzistergos, T.; Ermolli, I.; Krivova, N. A.; Barata, T.; Carvalho, S.; Malherbe, J.-M.: Scrutinising the relationship between plage areas and sunspot areas and numbers. Astronomy and Astrophysics 667, p. A167 (2022)
Chatzistergos, T.; Krivova, N.; Ermolli, I.: Full-disc Ca II K observations-A window to past solar magnetism. FRONTIERS IN ASTRONOMY AND SPACE SCIENCES (2022)
Kaplan-Lipkin, A.; Macintosh, B.; Madurowicz, A.; Sowmya, K.; Shapiro, A. I.; Krivova, N. A.; Solanki, S. K.: Multiwavelength Mitigation of Stellar Activity in Astrometric Planet Detection. The Astronomical Journal 163, p. 205 (2022)
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)
Various application review phases in 2025. PhD projects in cosmochemistry, planetary science, solar and stellar physics, helioseismology, asteroseismology, ...
Solar Orbiter is the first space probe to look at the Sun's poles – and finds the magnetic field there in a state of turmoil. The Sun's magnetic field is currently undergoing a flip.
First Light! The spectro-polarimeter of the world's largest solar telescope in Hawaii looks at the Sun for the first time. The instrument was developed in Germany.
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
Dr. Theodosios Chatzistergos receives award by the European Space Weather and Space Climate Association for his research findings on the historical activity of the Sun.