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Analysis and modeling of the dynamics of the glow of calcium and hydrogen lines in solar and stellar flares
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SYSNO ASEP 0552237 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Analysis and modeling of the dynamics of the glow of calcium and hydrogen lines in solar and stellar flares Author(s) Kupryakov, Yu. A. (RU)
Bychkov, K. V. (RU)
Belova, O. M. (RU)
Gorshkov, A. B. (RU)
Heinzel, Petr (ASU-R) RID, ORCID
Kotrč, Pavel (ASU-R) RID, ORCIDArticle number 91 Source Title Open Astronomy. - : Walter de Gruyter
Roč. 30, č. 1 (2021)Number of pages 4 s. Publication form Online - E Language eng - English Country PL - Poland Keywords flares spectrum ; chromosphere ; GOES flux Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics OECD category Astronomy (including astrophysics,space science) Method of publishing Open access Institutional support ASU-R - RVO:67985815 UT WOS 000731524700001 EID SCOPUS 85122697547 DOI 10.1515/astro-2021-0011 Annotation We present intensity curves of solar flares obtained in the H alpha hydrogen line and CaII H, CaIR 8542 angstrom lines using multichannel spectrographs of Ondrejov 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 H alpha radiation flux by appearance of a shock wave during a flare and slow heating of the plasma. Workplace Astronomical Institute Contact Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2022 Electronic address http://hdl.handle.net/11104/0327371
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