...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Solar physics >Statistical Study of Network Jets Observed in the Solar Transition Region: a Comparison Between Coronal Holes and Quiet-Sun Regions
【24h】

Statistical Study of Network Jets Observed in the Solar Transition Region: a Comparison Between Coronal Holes and Quiet-Sun Regions

机译：太阳过渡区观测到的网络射流的统计研究：日冕区与静日区的比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Recent IRIS observations have revealed a prevalence of intermittent small-scale jets with apparent speeds of 80 - 250 kms(-1), emanating from small-scale bright regions inside network boundaries of coronal holes. We find that these network jets appear not only in coronal holes but also in quiet-sun regions. Using IRIS 1330 angstrom (C II) slit-jaw images, we extracted several parameters of these network jets, e.g. apparent speed, length, lifetime, and increase in foot-point brightness. Using several observations, we find that some properties of the jets are very similar, but others are obviously different between the quiet Sun and coronal holes. For example, our study shows that the coronal-hole jets appear to be faster and longer than those in the quiet Sun. This can be directly attributed to a difference in the magnetic configuration of the two regions, with open magnetic field lines rooted in coronal holes and magnetic loops often present in the quiet Sun. We also detected compact bright loops that are most likely transition region loops and are mostly located in quiet-Sun regions. These small loop-like regions are generally devoid of network jets. In spite of different magnetic structures in the coronal hole and quiet Sun in the transition region, there appears to be no substantial difference for the increase in footpoint brightness of the jets, which suggests that the generation mechanism of these network jets is very likely the same in both regions.
机译：IRIS的最新观测表明，间歇性小规模射流的普遍存在，其表观速度为80-250 kms（-1），源于冠状孔网络边界内的小规模明亮区域。我们发现这些网络射流不仅出现在日冕孔中，而且还出现在安静的太阳区域。使用IRIS 1330埃（C II）的下颌图像，我们提取了这些网络射流的几个参数，例如视在速度，长度，寿命以及脚点亮度的增加。通过一些观察，我们发现射流的某些性质非常相似，但在安静的太阳孔和日冕孔之间，其他性质显然不同。例如，我们的研究表明，冠状孔喷流似乎比安静的太阳下更快，更长。这可以直接归因于两个区域的磁性结构不同，开放的磁场线扎根在冠状孔中，而磁场通常出现在安静的太阳中。我们还检测到紧凑的明亮循环，这些循环很可能是过渡区域的循环，并且大多数位于安静的太阳区域。这些小的环状区域通常没有网络射流。尽管冠状孔中的磁性结构不同，过渡区域中的太阳安静，但射流的脚位亮度增加似乎没有实质性差异，这表明这些网络射流的生成机理很可能是相同的在两个地区。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号