aat Acta Astrophys. Tau. Acta Astrophysica Taurica 2712-925X Kiselev Nikolai Nikolaevich, Mosсow, settlement Moskovskii, Tat'yanin Park Str., 12, Moscow, Russia. RU 43 10.34898/aat.vol3.iss2.pp17-21 Magnetism and activity of the Sun and stars – 2021 Conference proceedings Solar flare pulsation spectra Kupryakov Yu.A. Gorshkov A.B. Kashapova L.K. Astronomical Institute ASCR, Fričova 298, Ondřejov 251 65, Czech Republic; Sternberg Astronomical Institute, Moscow State University, Universitetsky pr. 13, Moscow 119234, Russia Sternberg Astronomical Institute, Moscow State University, Universitetsky pr. 13, Moscow 119234, Russia Institute of Solar-Terrestrial Physics SB RAS, Irkutsk 6640333, Russia 15 06 2022 3 2 17 21 15 06 2022 Copyright (c) Kupryakov Y., Gorshkov A., Kashapova L. Kupryakov Y., Gorshkov A., Kashapova L. The metadata for this submission is licensed under a Creative Commons Attribution 4.0 International License. Copyright and publishing rights for texts published in Acta Astrophysica Taurica is retained by the authors, with first publication rights granted to the journal.Texts are free to use with proper attribution and link to the licensing (Creative Commons Attribution 4.0 International).

We present the results of the analysis of quasiperiodic pulsations of chromospheric emission from three solar flares. The study is based on observational data obtained with two ground-based spectrographs: the Multichannel Flare Spectrograph and the Horizontal-Sonnen-Forschungs-Anlage 2 of the Ondřejov Observatory (Astronomical Institute of the Czech Academy of Sciences). The analysis of the power spectra of time profiles obtained using both spectrograms and filtergrams is carried out. The revealed periods were compared with the results of periodicity analysis in the X-ray and microwave ranges. For those events where the duration of observations allowed, a period close to 5 minutes was found from both the data of chromospheric observations and the data obtained in the X-ray and microwave ranges. We also found the periods about 1.4–1.8 and 2–3 minutes, which simultaneously appeared in all studied ranges.

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