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ON BROADENING MECHANISMS OF THE Ca XIX RESONANCE LINE IN SOLAR FLARES

机译:太阳耀斑中Ca XIX共振线的断裂机理研究

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摘要

There are two explanations for the broadening mechanisms of the Ca xix resonance line in the rising phase of a solar flare. One is due to the velocity dispersion of the chromospheric evaporation along the loop; the other is due to the non-thermal turbulence resulting from the flare energy release. In this paper we distinguish between these two possibilities by studying the influence of the loop orientation on the broadening of the Ca xix resonance line, based on the data observed with SXT and BCS on Yohkoh. The results seem to support that the broadening of the Ca xix resonance line is caused by non-thermal turbulence, rather than by the velocity dispersion.
机译:Ca xix共振线在太阳耀斑上升阶段的展宽机理有两种解释。一种是由于色环蒸发沿环线的速度分散;另一个原因是火炬能量释放导致了非热湍流。在本文中,我们基于在Yohkoh上使用SXT和BCS观测到的数据,通过研究回路方向对Ca xix共振线变宽的影响来区分这两种可能性。结果似乎支持Ca xix共振线的加宽是由非热湍流而不是由速度分散引起的。

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  • 来源
    《Solar Physics》 |2002年第1期|117-121|共5页
  • 作者

    W.Q. Gan; Y.P. Li;

  • 作者单位

    Purple Mountain Observatory China and National Astronomical Observatories Chinese Academy of Sciences;

    Purple Mountain Observatory China and National Astronomical Observatories Chinese Academy of Sciences;

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  • 正文语种 eng
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