Strong Zeeman effects in the Fe I 5434.5 Å line observed in a sunspot on August 17, 2024
Тип публікації :
Препринт
Дата випуску :
6 серпня 2026 р.
Автор(и) :
I. I. Yakovkin
Vsevolod G. Lozitsky
eKNUTSHIR URL :
Журнал :
arXiv (Cornell University)
Цитування :
[APA 7] I., I. Y., & Vsevolod, G. L. (2026). Strong Zeeman effects in the Fe I 5434.5 Å line observed in a sunspot on August 17, 2024. arXiv (Cornell University),. https://ir.library.knu.ua/handle/15071834/34327
[ДСТУ] I. I. Y., Vsevolod G. L. Strong Zeeman effects in the Fe I 5434.5 Å line observed in a sunspot on August 17, 2024. arXiv (Cornell University). 2026. URL: https://ir.library.knu.ua/handle/15071834/34327 (дата звернення: 11.09.2026).
The Fe I 5434.5 Å line is widely used as a non-magnetic reference due to its small effective Landé factor of $-0.014$. Nevertheless, this line can show significant non-zero Stokes $V$ polarization in active regions on the Sun. In this work, we study the distribution of magnetic fields in the sunspot observed on August 17, 2024 using the high-fidelity Stokes $I+V$ and $I-V$ spectra of three photospheric spectral lines of different magnetic sensitivity: Fe I 5434.5 Å, Ni I 5435.9 Å and Mn I 5432.5 Å. The observed splitting of the Stokes $I\pm V$ bisectors in the Fe I 5434.5 Å line follows the variation of the corresponding splitting in the two other spectral lines, indicating the presence of a spatial component with an extraordinarily strong magnetic field reaching 22 kG.
Файл(и) :![Ескіз]()
Вантажиться...
Формат :
Adobe PDF
Розмір :
2.7 MB
Контрольна сума :
(MD5):1bda3ec2fe952015ff89c87ffbbef271
Якщо не вказано інше, ця робота розповсюджується на умовах ліцензії Attribution 4.0 International