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首页> 外文会议>SOHO 11 Symposium on From Solar Min to Max: Half a Solar Cycle with SOHO Mar 11-15, 2002 Davos, Switzerland >LARGE-SCALE CORONAL STRUCTURES IN EUV AND SOFT X-RAYS IN SOLAR CYCLE 23
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LARGE-SCALE CORONAL STRUCTURES IN EUV AND SOFT X-RAYS IN SOLAR CYCLE 23

机译：太阳循环中EUV和软X射线的大型冠状结构23

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摘要

We have analyzed the EIT/SOHO data in four EUV lines (171A, 195A, 284A and 304A) and soft X-ray YOHKOH data in two filters (AlMg and Al) in the form of coronal synoptic maps for the period 1996-2001 yrs. Two types of the bright structures have been detected in EUV in the axisymmetrically averaged synoptic maps. The structures of the first type migrate equatorward as the solar cycle progresses. They are related to complexes of sunspot activity and display the "butterfly"-type distribution. The structures of the second type migrate polarward and are associated with footpoints of giant coronal loops, which connect the polar regions and the following parts of the active complexes. These structures of coronal activity are also pronounced in the soft X-ray maps. However, the whole structure of the giant polar loops is visible in X-rays, and reveals connections to the low-latitude coronal structures. The relationship between the soft X-rays emission and the pho-tospheric magnetic flux obtained from SOHO/MDI and Kitt Peak Solar Observatory has been investigated. It has been found that the relationship depends on the phase of the solar cycle. We discuss the role of the magnetic flux in the formation and evolution of the stable coronal structures during the rising phase of cycle 23.
机译：我们已经分析了1996-2001年期间的4条EUV线（171A，195A，284A和304A）的EIT / SOHO数据和两个滤光片（AlMg和Al）的软X射线YOHKOH数据，以日冕天气图的形式。在轴对称平均天气图的EUV中检测到两种类型的亮结构。第一类型的结构随着太阳周期的进行向赤道移动。它们与太阳黑子活动复合体有关，并显示“蝴蝶”型分布。第二类结构向极性迁移，并与巨大的冠状环的脚点相关，冠状环连接极性区域和活性复合物的以下部分。这些冠状活动结构在软X线图中也很明显。然而，巨大的极环的整个结构在X射线中可见，并揭示了与低纬度日冕结构的联系。研究了从SOHO / MDI和基特峰太阳观测台获得的软X射线发射与光圈磁通量之间的关系。已经发现该关系取决于太阳周期的相位。我们讨论了周期23上升阶段中磁通量在稳定冠状结构形成和演化中的作用。

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