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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Hinode SP vector magnetogram of AR 10930 and its cross-comparison with MDI
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Hinode SP vector magnetogram of AR 10930 and its cross-comparison with MDI

机译：AR 10930的Hinode SP矢量磁图及其与MDI的交叉比较

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摘要

We present one Hinode Spectropolarimeter (SP) magnetograrn of AR 10930 that produced several major flares. The inversion from Stokes profiles to magnetic field vectors was made using the standard Milne-Eddington code. We successfully applied the Uniform Shear Method for resolving the 180 degrees ambiguity to the magnetogram. The inversion gave very strong magnetic field strengths (near 4500 gauss) for a small portion of area in the umbra. Considering that the observed V-profile of 6301.5 angstrom was well-fitted as well as a direct estimation of the Zeeman splitting results in 4300-4600 gauss, we think that the field strengths should not be far from the actual value. A cross-comparison of the Hinode SP and SOHO MDI high resolution flux densities shows that the MDI flux density could be significantly underestimated by about a factor of two. In addition, it has a serious negative correlation (the so-called Zeeman saturation effect) with the Hinode SP flux density for umbral regions. Finally, we could successfully obtain a recalibrated MDI magnetogram that has been corrected for the Zeeman saturation effect using not only a pair of MDI intensity and magnetogram data simultaneously observed, but also the relationship from the cross-comparison between the Hinode SP and MDI flux densities.
机译：我们介绍了AR 10930的一部Hinode分光极谱仪（SP）磁晶，它产生了几个主要的耀斑。使用标准的Milne-Eddington码将Stokes轮廓转换为磁场矢量。我们成功地应用了均匀切变方法来解决180度磁图的歧义。反演为本影的一小部分区域提供了非常强的磁场强度（接近4500高斯）。考虑到观测到的6301.5埃的V剖面非常合适，并且可以直接估算4300-4600高斯的塞曼分裂结果，因此我们认为场强不应与实际值相差不远。 Hinode SP和SOHO MDI高分辨率通量密度的交叉比较表明，MDI通量密度可能被低估了大约两倍。此外，它与本影区域的Hinode SP通量密度具有严重的负相关性（所谓的塞曼饱和效应）。最后，我们不仅可以通过同时观察到的一对MDI强度和磁图数据，而且还可以通过Hinode SP与MDI通量密度之间的交叉比较的关系，成功地获得针对Zeeman饱和效应进行校正的重新校准的MDI磁图。 。

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