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首页> 外文期刊>Solar Physics >THE PROMINENCE – CORONA AND THE FILAMENT – CORONA TRANSITION REGION: IS THERE ANY DIFFERENCE?
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THE PROMINENCE – CORONA AND THE FILAMENT – CORONA TRANSITION REGION: IS THERE ANY DIFFERENCE?

机译：突出之处-日冕和长丝-日冕过渡地区：有什么区别吗？

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摘要

The ratio between the Extreme Ultraviolet emission of the prominence–corona transition region and that of the quiet Sun (QS) transition region is measured using observations from the CDS and SUMER instruments on board the SOHO Satellite. These results are compared with those obtained in an earlier paper, analysing the same prominence as a filament on the disk. Theoretical models predict a difference in the emission of the prominence–corona transition region when it is observed at the limb and on the disk as a filament; the aim of the present work is to provide an observational check of this difference. SUMER and CDS data provide fairly good agreement if the prominence intensity measured by SUMER is compared with the average quiet-Sun intensity, measured near the disk center; the prominence intensity relative to the average quiet-Sun level measured on the same rasters results in disagreement with CDS, due to the smaller size of the disk portion and to the very strong limb brightening present in SUMER rasters. The relative prominence to quiet-Sun intensity ratio varies from 0.2 to 0.4, depending on the line formation temperature. This value leads to a discrepancy with the results obtained in a previous study when the same prominence was observed as a filament. This discrepancy indicates that the prominence–corona transition region emission is different when emitted by different sides of the prominence.
机译：利用SOHO卫星上CDS和SUMER仪器的观测值，测量了突出-电晕过渡区的极紫外发射与安静太阳（QS）过渡区的紫外发射之比。将这些结果与早期论文中获得的结果进行了比较，分析了与磁盘上的细丝相同的突出程度。理论模型预测，当在肢体和椎间盘上观察到呈细丝状时，突出-电晕过渡区的发射会有所不同。本工作的目的是对这种差异进行观察检查。如果将SUMER测得的突出强度与磁盘中心附近测得的平均“安静-太阳”强度进行比较，SUMER和CDS数据将提供相当好的一致性。由于圆盘部分的尺寸较小，并且SUMER栅格中的肢体发亮非常强，因此相对于在同一栅格上测量的平均安静太阳水平的突出强度导致与CDS不一致。相对于安静的太阳强度强度比从0.2到0.4不等，具体取决于线形成温度。当观察到与细丝相同的突出时，该值导致与先前研究中获得的结果不一致。这种差异表明，当由突起的不同侧面发射时，突起-电晕过渡区的发射是不同的。

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  • 来源
    《Solar Physics》 |2002年第2期|315-332|共18页
  • 作者

    F. Chiuderi Drago; E. Landi;

  • 作者单位

    Department of Astronomy and Space Science University of Florence;

    Naval Research Laboratory;

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