Analysis and modeling of the dynamics of the glow of calcium and hydrogen lines in solar and stellar flares-Reference-Cited by-同舟云学术

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

Published:2021-01-01 Issue:1 Volume:30 Page:91-95
ISSN:2543-6376
Container-title:Open Astronomy
language:en
Short-container-title:

Author:

Kupryakov Yurij Alekseevich¹,Bychkov Konstantin Veniaminovich²,Belova Oksana Mikhailovna²,Gorshkov Alexey Borisovich²,Heinzel Petr³,Kotrč Pavel³

Affiliation:

1. Astronomical Institute AS CR , Fričova 298, 251 65 Ondřejov , Czech Republic ; Sternberg Astronomical Institute , M.V. Lomonosov Moscow State University , Universitetsky pr. 13, Moscow 119234, Russia

2. Sternberg Astronomical Institute , M.V. Lomonosov Moscow State University , Universitetsky pr. 13, Moscow 119234, Russia

3. Astronomical Institute AS CR , Fričova 298, 251 65 Ondřejov, Czech Republic

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.

Publisher

Walter de Gruyter GmbH

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

https://www.degruyter.com/document/doi/10.1515/astro-2021-0011/pdf

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