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Fig. 5.


Temporal variations of Hα line profiles (panel a) Hα total intensities (panel b) the temporal variations of total Hα line intensity (blue line) simulated for 100 s of the hydrodynamic models heated by an electron beam. We note that a strong increase of Hα intensity in this flare caused by beam electrons, as shown in (panel b), led to the blackout for a few minutes of the FISCH sensors during the flare onset.

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