Analysis and modeling of the dynamics of the glow of calcium and hydrogen lines in solar and stellar flares

IF 0.5 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Open Astronomy Pub Date : 2021-01-01 DOI:10.1515/astro-2021-0011

Y. Kupryakov, K. Bychkov, O. M. Belova, A. Gorshkov, P. Heinzel, P. Kotrč

引用次数: 0

Abstract

Abstract We present intensity curves of solar flares obtained in the Hα hydrogen line and CaII H, CaIR 8542Å lines using multichannel spectrographs of Ondřejov Observatory (Czech Republic) for the period 2000–2012. The general behavior of observed intensity curves is practically the same for all flares and is consistent with temporal variations of X-ray emission. However, our results differ significantly from those obtained by other authors for selected flare stars, for example, AD Leo; EV Lac; YZ CMi. We tried to explain the difference in the behavior of Ca II and Hα radiation flux by appearance of a shock wave during a flare and slow heating of the plasma.

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太阳和恒星耀斑中钙和氢线发光的动力学分析和建模

摘要利用捷克Ondřejov天文台的多通道光谱仪，给出了2000-2012年期间在Hα氢线和CaII H、CaIR 8542Å线上获得的太阳耀斑强度曲线。观测到的所有耀斑强度曲线的一般行为实际上是相同的，并且与x射线发射的时间变化一致。然而，我们的结果与其他作者对某些耀斑恒星的结果有很大的不同，例如，AD Leo;电动汽车漆;YZ CMi。我们试图通过在耀斑和等离子体缓慢加热期间出现激波来解释Ca II和Hα辐射通量行为的差异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Open Astronomy Physics and Astronomy-Astronomy and Astrophysics

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

16 weeks

期刊介绍： The journal disseminates research in both observational and theoretical astronomy, astrophysics, solar physics, cosmology, galactic and extragalactic astronomy, high energy particles physics, planetary science, space science and astronomy-related astrobiology, presenting as well the surveys dedicated to astronomical history and education.