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Observation, Theoretical Calculation and Analysis of the Solar Flare on May 11, 2012
- Authors: Kupryakov Y.A.1,2, Bychkov K.V.1, Belova O.M.1, Gorshkov A.B.1, Malyutin V.A.1
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Affiliations:
- Lomonosov Moscow State University
- Astronomical Institute of the Academy of Sciences of the Czech Republic
- Issue: Vol 65, No 3 (2025)
- Pages: 307-313
- Section: Articles
- URL: https://rjonco.com/0016-7940/article/view/686965
- DOI: https://doi.org/10.31857/S0016794025030011
- EDN: https://elibrary.ru/ERKZKH
- ID: 686965
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Abstract
Solar flare of May 11, 2012 was observed on two spectrographs of the Astronomical Institute of the Czech Academy of Sciences – a multichannel flare spectrograph and a horizontal setup for solar research. After processing the spectra, integral emission fluxes in the hydrogen, helium and calcium lines were determined. Within the framework of the heated gas model, a theoretical calculation of the plasma parameters was performed taking into account the physical conditions in the chromosphere, including self-absorption in the spectral lines. A comparison of six lines at once made it possible to reconstruct the temperature, density and spatial structure of the emitting gas with a high degree of confidence. At the same time, a search for quasi-periodic pulsations in this solar flare was carried out, which showed the absence of such in almost all spectral ranges. An exception is the detection of pulsations in the images of the chromosphere on the spectrograph slit in the Hα line with a period of 30 s.
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About the authors
Yu. A. Kupryakov
Lomonosov Moscow State University; Astronomical Institute of the Academy of Sciences of the Czech Republic
Author for correspondence.
Email: kupry@asu.cas.cz
Russian Federation, Moscow; Ondřejov, Czech Republic
K. V. Bychkov
Lomonosov Moscow State University
Email: kupry@asu.cas.cz
Russian Federation, Moscow
O. M. Belova
Lomonosov Moscow State University
Email: kupry@asu.cas.cz
Russian Federation, Moscow
A. B. Gorshkov
Lomonosov Moscow State University
Email: kupry@asu.cas.cz
Russian Federation, Moscow
V. A. Malyutin
Lomonosov Moscow State University
Email: malyutinv@list.ru
Russian Federation, Moscow
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