A Method for Estimating the Spatial Period of Energy Release in Solar Flaresстатья
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Дата последнего поиска статьи во внешних источниках: 10 апреля 2024 г.
Аннотация:A method for estimating the spatial period of energy release in solar flares is proposed to analyze the present-day satellite observations of arcades of flare coronal loops. The method is based on the application of a Fourier analysis to the difference images of flare arcades in the far ultraviolet. The operation of the method is demonstrated with the observations of the Bastille Day flare from the TRACE spacecraft in the 171 A ̊ channel. The mean spatial period of energy release in the Bastille Day flare determined by the proposed method is 5–8 Mm, in good agreement with the scenario for the development of thermal instability of the preflare current layer in solar flares.