We study the structure of the magnetic elements in network-cell interiors. Aquiet Sun area close to the disc centre was observed with thespectro-polarimeter of the Solar Optical Telescope on board the Hinode spacemission, which yielded the best spatial resolution ever achieved inpolarimetric data of the Fe I 630 nm line pair. For comparison andinterpretation, we synthesize a similar data set from a three-dimensionalmagneto-hydrodynamic simulation. We find several examples of magnetic elements,either roundish (tube) or elongated (sheet), which show a central area ofnegative Stokes-V area asymmetry framed or surrounded by a peripheral area withlarger positive asymmetry. This pattern was predicted some eight years ago onthe basis of numerical simulations. Here, we observationally confirm itsexistence for the first time. We gather convincing evidence that this patternof Stokes-V area asymmetry is caused by the funnel-shaped boundary of magneticelements that separates the flux concentration from the weak-field environment.We also conclude that this kind of magnetic element of the internetwork isaccompanied by electric current sheets.
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机译：我们研究网络单元内部的磁性元素的结构。用Hinode太空飞行器上的太阳光学望远镜的分光偏振计观察到了靠近圆盘中心的Aquiet Sun区域，这产生了有史以来Fe I 630 nm线对的非偏振数据最佳的空间分辨率。为了进行比较和解释，我们从三维磁流体动力学模拟中合成了相似的数据集。我们发现了一些磁性元件的例子，无论是圆形的（管状的）还是细长的（片状的），它们都显示负斯托克斯-V型区域不对称的中心区域，该中心区域被具有较大正不对称性的外围区域围绕或包围。这种模式是在八年前根据数值模拟预测的。在这里，我们通过观察首次确认了它的存在。我们收集了令人信服的证据，表明这种Stokes-V区域不对称模式是由磁元素的漏斗形边界引起的，该边界将通量集中度与弱场环境分开。我们还得出结论，这种互联网络的磁性元素是伴随有电流的床单。
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