太阳极区的磁景观
Magnetic Landscape of Sun's Polar Region
摘要：
我们提出了太阳极地地区的磁景观，这是前所未有的高空间分辨率，大视场，和偏振精度。这些观测是用\emph{Hinode}上的太阳光学望远镜进行的。利用Milne-Eddington反演，我们发现了许多垂直取向的磁通量管，其场强可达1 kG，分布在70-90度之间的纬度上。它们都具有相同的极性，与极地区域的全球极性一致。观察到的场矢量从通量元素的中心发散，这与磁场随高度扩展和散开的观点一致。极地也被无处不在的水平磁场所覆盖。极区是沿单极日冕磁场传播的快速太阳风的来源，而日冕磁场的光球源显然是植根于强磁场，垂直通量斑块。我们推测，大膨胀的光球-日冕边界附近的垂直通量管作为有效的烟囱阿尔芬波加速太阳风。
英文摘要：
We present the magnetic landscape of the polar region of the Sun that is unprecedented in terms of high spatial resolution, large field of view, and polarimetric precision. These observations were carried out with the Solar Optical Telescope aboard \emph{Hinode}. Using a Milne-Eddington inversion, we found many vertically-oriented magnetic flux tubes with field strength as strong as 1 kG that are scattered in latitude between 70-90 degree. They all have the same polarity, consistent with the global polarity of the polar region. The field vectors were observed to diverge from the center of the flux elements, consistent with a view of magnetic fields that expand and fan out with height. The polar region is also covered with ubiquitous horizontal fields. The polar regions are the source of the fast solar wind channelled along unipolar coronal magnetic fields whose photospheric source is evidently rooted in the strong field, vertical patches of flux. We conjecture that vertical flux tubes with large expansion around the photosphere-corona boundary serve as efficient chimneys for Alfven waves that accelerate the solar wind.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
