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From the 1 of 9 linked papers with an AI index.

activity
20242026
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9 papers

astro-ph.SR2026

Re-evaluating solar irradiance reconstructions: No evidence for large secular trends

Theodosios Chatzistergos, Natalie A. Krivova, Mathew J. Owens +1

The authors reassess solar irradiance reconstructions that previously suggested large secular increases and find that, after correcting the linking of cosmogenic isotope and neutro…

astro-ph.SR2026

The rotation-magnetism relationship in solar-type stars. Constraining magnetic flux emergence rates

Emre Isik, Sami K. Solanki, Natalie A. Krivova +1

The rotation-activity relationship of G-type stars results from surface magnetic fields emerging from the interior. How the magnetic flux and its emergence rate scale with rotation…

astro-ph.SR2026

Cyclic sunspot activity during the first millennium CE as reconstructed from radiocarbon

Ilya Usoskin, Sami K. Solanki, Natalie A. Krivova +1

Context. Solar activity, dominated by the 11-year cyclic evolution, has been observed directly since 1610. Before that, indirect cosmogenic proxy data are used to reconstruct it ov…

astro-ph.SR2025

Structure and Dynamics of the Sun's Interior Revealed by Helioseismic and Magnetic Imager

Alexander Kosovichev, Sarbani Basu, Yuto Bekki +43

High-resolution helioseismology observations with the Helioseismic and Magnetic Imager (HMI) onboard Solar Dynamics Observatory (SDO) provide a unique three-dimensional view of the…

astro-ph.SR2025

Revisiting the SATIRE-S irradiance reconstruction: Heritage of Mt Wilson magnetograms and Ca II K observations

Theodosios Chatzistergos, Natalie A. Krivova, Sami K. Solanki +1

Accurate information on long-term variations in solar irradiance, important for understanding the solar influence on Earth's climate, cannot be derived from direct irradiance measu…

astro-ph.SR2025

Detectability of Solar Rotation Period Across Various Wavelengths

Valeriy Vasilyev, Timo Reinhold, Alexander I. Shapiro +3

The light curves of old G-dwarfs obtained in the visible and near-infrared wavelength ranges are highly irregular. This significantly complicates the detectability of the rotation…