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astro-ph.SR2026
The "Other" Centuries-Long Record of Solar Magnetic Activity Cycles: Lessons From the Stars
Jason T. Wright, Travis S. Metcalfe, Kristof Petrovay +1
Studies of space climate and solar magnetic activity and studies of stellar dynamos and magnetic cycles are separated by discipline and by the quality of the data we have to work w…
astro-ph.SR2026
36Cl Concentrations from Polar Ice Cores Set New Constraints on the Carrington Event
F. Mekhaldi, C. I. Paleari, A. M. Smith +12
The Carrington event of 1859 CE is considered as one of the largest geomagnetic storms of the observational era, and often used as a benchmark for a worst-case scenario. Yet, there…
astro-ph.SR2026
The First Four Ground-Level Enhancements in the 1940s: Investigation, Digitisation, and Analysis of Forgotten Data
Hisashi Hayakawa, Stepan Poluianov, Sergey Koldobskiy +4
Intense solar eruptions occasionally accelerate solar energetic particles (SEPs) and can trigger ground-level enhancements (GLEs). Among the 77 known GLEs, the first four GLEs, #1…