Speaker
Dr
Alexei Pevtsov
(US National Solar Observatory, US)
Description
This work continues revisiting the manual observations of magnetic fields in sunspots from 1917-2025. Observations from Mount Wilson Observatory, Potsdam, and Crimean Astrophysical Observatory are included. We review the methods of observations, describe observational setups, compare measurements, and discuss systematics. While we see a solar cycle variation in the amplitude of strongest magnetic field, the results indicate no systematic change in sunspot field strength over the last 11 sunspot cycles.
Author
Dr
Alexei Pevtsov
(US National Solar Observatory, US)
Co-authors
Dr
Andrei Tlatov
(Pulkovo Astronomical Observatory, RU)
Dr
Kseniia Tlatova
(Pulkovo Astronomical Observatory, RU)
Dr
Vladimir Abramenko
(Crimean Astrophysical Observatory)