Retrieval of the full magnetic vector with the He I multiplet at 1083 nm. Maps of an emerging flux region
Retrieval of the full magnetic vector with the He I multiplet at 1083 nm. Maps of an emerging flux region
复制标题
DOI：
10.1051/0004-6361:20031643
复制
发表时间：
2004-02
影响因子：
6.5
通讯作者：
A. Lagg;J. Woch;N. Krupp;S. Solanki
中科院分区：
文献类型：
--
作者：
A. Lagg;J. Woch;N. Krupp;S. Solanki
提出了一种反转 He I 1083 nm 多重线斯托克斯剖面的技术，以获得完整的磁矢量和视线速度。该技术利用与塞曼效应相关的分光偏振法，并在适当时辅以简单的基于汉勒效应的诊断。它考虑了线饱和、磁光效应等效应，并与遗传算法相结合，确保找到拟合优度超曲面的全局最小值。使用人工和真实数据的测试证明了该方法的稳健性。作为说明图，显示并简要讨论了新兴通量区域的推导参数。
A technique is presented to invert Stokes profiles of the He I 1083 nm multiplet lines in order to obtain the full magnetic vector and the line-of-sight velocity. The technique makes use of spectropolarimetry connected with the Zeeman effect supplemented by a simple Hanle effect based diagnostic when appropriate. It takes into account effects like line saturation, magnetooptical effects, etc. and is coupled with a genetic algorithm, which ensures that the global minimum in a goodness of fit hypersurface is found. Tests using both artificial and real data demonstrated the robustness of the method. As an illustration maps of deduced parameters of an emerging flux region are shown and briefly discussed.