Morphological evolution of an emerging flux region
Morphological evolution of an emerging flux region
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新兴通量区域的形态演化
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
J. Steenbeek
中科院分区：
文献类型：
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作者：
J. Brants;J. Steenbeek
我们描述的光球功能的形态演变的新兴通量区（EFR），在高分辨率的照片的基础上采取的真空塔望远镜在萨克拉门托峰天文台。个别路线变暗的晶间泳道只有约10分钟的寿命，他们可能代表新兴的通量环的顶部。颗粒间通道（原孔）内的圆形深色斑块可能先于孔的产生，或者可能在几小时内再次消失。一个气孔的诞生与光谱图中观察到的明显的向下流动区域相吻合。大多数的EFR中的孔面积增长和变暗，它们的生长时间在1和6小时之间变化。观察到各种模式的增长。有些气孔在出生后几小时内再次溶解。整个EFR的长轴向平行于赤道方向旋转2度hr-1，主导极性最接近赤道。环孔周围的EFR扩展速度约为0.7公里s-1的东西方向。存在强烈的速度剪切：先导孔隙的前缘垂直于孔隙环的总体扩展方向移动，在跟随极性的快速生长孔隙附近和排列附近不存在细丝。
We describe the morphological evolution of photospheric features in an emerging flux region (EFR), on the basis of high-resolution photographs taken with the Vacuum Tower Telescope at Sacramento Peak Observatory. Individual alignments of darkened intergranular lanes have a lifetime of only about 10 min; they may represent the tops of emerging flux loops. Roundish darkened patches within the intergranular lanes (protopores) may precede the birth of a pore, or may disappear again within a few hours. The birth of one pore coincides with the area of a conspicuous downflow observed in the spectrograms. The majority of the pores in the EFR grow in area and darken; their growth times vary between 1 and 6 hr. Various modes of growth are observed. Some pores dissolve again within a few hours after their birth.The long axis of the whole EFR rotates by 2 deg hr-1 towards alignment parallel to the equator, with leading polarity closest to the equator. The ring of pores surrounding the EFR expands with velocities of about 0.7 km s-1 in the east-west direction. There is strong velocity shear: the leading edge of the leading pore moves perpendicular to the general expansion of the ring of pores.Filigree is absent near the fast growing pores of following polarity and near the alignments.