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astro-ph.SR2026
Magnetic activity in cool stars: manifestations and relevance to exoplanets
E. IÅık, A. Valio, A. Strugarek +10
Understanding stellar magnetic activity is central to exoplanet science in two ways: it sets the dynamic astrospheric boundary condition governing planetary space environments, and…
astro-ph.SR2025
Magnetic evolution of complex solar active regions
Shabnam Nikbakhsh, Eija I. Tanskanen, Thomas Hackman
Aims. This study investigates the magnetic evolution of solar active regions (ARs), with a particular focus on understanding how the magnetic morphology of simple and complex ARs c…
astro-ph.SR2024
Characterising the stellar differential rotation based on largest-spot statistics from ground-based photometry
Mikko Tuomi, Jyri J. Lehtinen, Gregory W. Henry +1
Stellar spot distribution has consequences on the observable periodic signals in long-time baseline ground-based photometry. We model the statistics of the dominating spots of two…