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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00552237" target="_blank" >RIV/67985815:_____/21:00552237 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0327371" target="_blank" >http://hdl.handle.net/11104/0327371</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1515/astro-2021-0011" target="_blank" >10.1515/astro-2021-0011</a>

Result language
angličtina
Original language name
Analysis and modeling of the dynamics of the glow of calcium and hydrogen lines in solar and stellar flares
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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