aat Acta Astrophys. Tau. Acta Astrophysica Taurica 2712-925X Kiselev Nikolai Nikolaevich, Mosсow, settlement Moskovskii, Tat'yanin Park Str., 12, Moscow, Russia. RU 57 10.34898/aat.vol3.iss3.pp1-3 Research articles Mechanisms of the regular acceleration of electrons by induced electric fields in solar flares Tsap Yurii T. Kopylova Yuliya Korol'kova Ol'ga Barta Miroslav Crimean Astrophysical Observatory, Nauchny, 298409 Central Astronomical Observatory at Pulkovo, Pulkovskoe ave. 65/1, St. Petersburg 196140, Russia Central Astronomical Observatory at Pulkovo, Pulkovskoe ave. 65/1, St. Petersburg 196140, Russia Academy of Sciences of the Czech Republic, v. v. i., Astronomical Institute, Fri cova 258, CZ 251 65 Ond rejov, Czech Republic 22 12 2022 3 3 1 3 02 12 2022 Copyright (c) Tsap Y., Kopylova Y., Korol'kova O., Barta M. Tsap Y., Kopylova Y., Korol'kova O., Barta M. 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).

A critical analysis of mechanisms of the regular acceleration of electrons in solar flares is carried out. The corresponding models are shown to face difficulties associated with the transverse direction of the induced electric field with respect to the magnetic one, plasma magnetization, and small efficiency. It is concluded in favor of an important role of longitudinal electrostatic electric fields in the acceleration of electrons.

Sun flare energy release accelerated electrons electric field Aschwanden M.J., 2004. Physics of the Solar Corona: An Introduction, New York: Springer. Aschwanden M.J., Holman G., O’Flannagain A., et al., 2016. Astrophys. J., vol. 832, id 27. Bogachev S.A., Somov B.V., 2005. Astron. Lett., vol. 31, pp. 537–545. Filatov L.V., Melnikov V.F., Gorbikov S.P., 2013. Geomag. Aeronom., vol. 53, pp. 1007–1012. Fleishman G.D., Gary D.E., Chen B., Kuroda N., Yu S., Nita G.M., 2020. Science, vol. 367, iss. 6475, pp. 278–280. Lehnert B. Dynamics of Charged Particles, North-Holland Publishing Company, Amsterdam, 1964, 300 pp. Liu S., Jokipii J.R., 2021. Frontiers in Astronomy and Space Sciences, vol. 8, id. 100. Miller J.A., Cargill P.J., Emslie A.G., et al., 1997. J. Geophys. Res., vol. 102, no. A7, pp. 14631–14660. Tsap Yu.T., 2000. Izv. Krymsk. Astrofiz. Observ., vol. 96, pp. 165–175. Tsap Yu.T., Kopylova Yu.G., 2017. Geomag. Aeronom., vol. 57, no. 8, pp. 996–1000. Tsap Yu.T., Stepanov A.V., Kopylova Yu.G. 2019. Geomag. Aeronom., vol. 59, no. 8, pp.789–792. Tsuneta S., 1995. Publ. Astron. Soc. Japan, vol. 47, pp. 691–697. Zaitsev V.V., Stepanov A.V., 2015. Solar Phys., vol. 290, no. 12, pp. 3559–3572.