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Carbon and Oxygen Coronal Line Intensities for the Electron κ-DistributionI

机译:电子κ分布的碳氧冠线强度

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摘要

The ionization and excitation equilibrium of C and O for the electron κ-distribution in the solar corona is studied. The change of the distribution shape changes the ionization, recombination and excitation rates. These changes influence the relative ion abundance and the level populations. The ionization peaks are wider and the level populations are usually lower for this kind of non-thermal distribution. The diagnostics of the electron distribution shape from ionic composition and from the line intensities is shown. The synthetic spectrum in the region 500–2000 Å shows that some C iv, C iii and O iv lines are very sensitive to the shape of the electron distribution function. The enhancement of these lines by a factor 2–6 is observed for a strongly non-thermal distribution in comparison with the Maxwellian one. This result has been tested for DEMs in the CHIANTI database.
机译:研究了日冕中电子κ分布中碳和氧的电离和激发平衡。分布形状的变化会改变电离,复合和激发速率。这些变化影响相对离子丰度和能级数。对于这种非热分布,电离峰较宽,且能级数通常较低。显示了根据离子组成和线强度对电子分布形状的诊断。在500-2000Å区域的合成光谱表明,某些C iv,C iii和O iv线对电子分布函数的形状非常敏感。与麦克斯韦方程相比,非强热分布的谱线增强了2-6。已针对CHIANTI数据库中的DEM测试了此结果。

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  • 来源
    《Solar Physics》 |2003年第2期|41-62|共22页
  • 作者单位

    Astronomical Institute Faculty of Mathematics Physics and Informatics Comenius University;

    Astronomical Institute Faculty of Mathematics Physics and Informatics Comenius University;

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  • 正文语种 eng
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