AI 中文总结
本研究通过Fe I等三条不同磁灵敏度谱线的高保真斯托克斯光谱，分析2024年8月17日太阳黑子的磁场分布，发现Fe I 5434.5 Å线对应空间分量存在高达22 kG的极强磁场。
AI 中文摘要
Fe I 5434.5 Å线因其有效朗德因子仅为-0.014，被广泛用作非磁参考线。然而，该谱线在太阳活动区可呈现显著的非零斯托克斯V偏振。本研究利用三条不同磁灵敏度的光球谱线的高保真斯托克斯I+V与I-V光谱，分析2024年8月17日观测到的太阳黑子内的磁场分布，三条谱线分别为Fe I 5434.5 Å、Ni I 5435.9 Å和Mn I 5432.5 Å。Fe I 5434.5 Å线中观测到的斯托克斯I±V bisector分裂，与另外两条谱线的对应分裂变化一致，表明存在空间分量，其磁场强度高达22 kG，属于极强磁场。
英文摘要
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.
