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Transition-Region Blinkers – II. Active-Region Properties

机译:过渡区域信号灯– II。活动区域属性

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摘要

The distribution and general properties of events identified in an active region that have the same characteristics as quiet-Sun blinkers are discussed and named `active-region blinkers'. The events are identified using an automated scheme `BLinker Identification Program' (BLIP) which was designed for and tested on quiet-Sun blinkers. Like quiet-Sun blinkers, the active-region events are most easily identified in the 629 Å emission line from O v although evidence for them is also found in other extreme UV lines emitted from He i, O iii and O iv. Unlike quiet-Sun blinkers, however, they may also have coronal signatures in the lines Mg ix and Mg x. Their properties are very similar to those of quiet-Sun blinkers with mean lifetimes of 16–19 min, mean areas of 2.4–4.3×107 km2 and mean intensity enhancements factors of 1.8–3.3. Their global frequency of 7–28 s−1 is about 42%–700% higher than that for quiet-Sun blinkers. The blinkers discussed here are found above both active-region (plage) magnetic fields, as well as above the umbra and penumbra of a sunspot.
机译:讨论了在活动区域​​中识别出的事件的分布和一般属性,这些事件具有与安静的太阳闪烁信号灯相同的特征,并称为“活动区域闪烁器”。使用自动方案“ BLinker识别程序”(BLIP)识别事件,该方案是为安静的Sun眨眼灯设计并经过测试的。像安静的太阳眨眼一样,最容易在O v的629Å发射线中识别出活动区域事件,尽管在He i,O iii和O iv发出的其他极端紫外线线中也发现了活动区域事件的证据。但是,与安静的太阳方向闪光器不同,它们在Mg ix和Mg x线中也可能具有日冕标志。它们的性质与安静的太阳眨眼的性质非常相似,其平均寿命为16–19分钟,平均面积为2.4–4.3×107 km2 ,平均强度增强因子为1.8–3.3。它们的7-28 s-1 的整体频率比安静的太阳眨眼频率高42%-700%。此处讨论的信号灯位于活动区域(螺旋)磁场的上方,以及黑子的本影和半影的上方。

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  • 来源
    《Solar Physics》 |2002年第2期|249-271|共23页
  • 作者单位

    Mathematical Institute University of St Andrews;

    Mathematical Institute University of St Andrews;

    Space Science Department Rutherford Appleton Laboratory;

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  • 正文语种 eng
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