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

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.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Analysis and modeling of the dynamics of the glow of calcium and hydrogen lines in solar and stellar flares ; volume:30 ; number:1 ; year:2021 ; pages:91-95 ; extent:5 ; Open astronomy ; 30, Heft 1 (2021), 91-95 (gesamt 5)

Contributors, Places and Time

• Creator: Kupryakov, Yurij Alekseevich ; Bychkov, Konstantin Veniaminovich ; Belova, Oksana Mikhailovna ; Gorshkov, Alexey Borisovich ; Heinzel, Petr ; Kotrč, Pavel

Further information

• DOI: 10.1515/astro-2021-0011
• URN: urn:nbn:de:101:1-2405281623538.422646450263
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:47 AM CEST