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Neural Network Maps as a Method for Constructing Mathematical Models
Scientists from HSE University–Nizhny Novgorod and the Institute of Physics Belgrade, Serbia, are jointly exploring the application of machine learning techniques and neural networks to the study of nonlinear dynamics. Natalya Stankevich, Leading Research Fellow at the Laboratory of Topological Methods in Dynamics of the Faculty of Informatics, Mathematics, and Computer Science at HSE University–Nizhny Novgorod, spoke to the HSE News Service about this international project.
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Магнитные жгуты во вспышечных активных областях

С. 23–26.
Bakunina I. A., Мельников В. Ф., Шаин А. В., Кузнецов С. А., Абрамов-Максимов В. Е.

It is shown that the positions of the flux ropes in the general spatial structure of the active region magnetic field reconstructed in the NLFFF approximation for flares with and without CME are different: magnetic flux ropes are located quasi-parallel to the overlying magnetic field lines in the events with CME, and quasi-perpendicular in the “confined” events.

Language: Russian
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Keywords: солнечные вспышкиsolar flarescoronal mass ejections (CME)корональные выбросы массы (КВМ)magnetic flux ropesмагнитные жгуты

In book

Труды XXVII Всероссийской ежегодной конференции по физике Солнца “Солнечная и солнечно-земная физика - 2023”, 9-13 октября 2023 года, Санкт-Петербург, ГАО РАН
Труды XXVII Всероссийской ежегодной конференции по физике Солнца “Солнечная и солнечно-земная физика - 2023”, 9-13 октября 2023 года, Санкт-Петербург, ГАО РАН
СПб.: ГАО РАН, 2023.
Similar publications
Spatial Position of Magnetic Flux Ropes in Flare Active Regions with and without Coronal Mass Ejections
I. A. Bakunina, Melnikov V. F., Shain A. V. et al., Geomagnetism and Aeronomy 2024 Vol. 64 No. 8 P. 1237–1249
Using statistics from 15 X-ray class M flare events, the features of the position and orientation of magnetic flux ropes in the general spatial structure of the magnetic field of the active region (AR) during flares and coronal mass ejections (CME) were studied by reconstructing the coronal magnetic field from the photosphere to the corona ...
Added: February 17, 2025
Preflare Fluctuations of Radio Emission from Active Regions of the Sun According to Observations at RSTN
Abramov-Maximov V. E., Bakunina I. A., Geomagnetism and Aeronomy 2024 Vol. 64 No. 7 P. 1054–1058
For the first time, several flare events are analyzed based on multifrequency observations using the Radio Solar Telescope Network. The purpose of the analysis is to identify signs of flare preparation. In all considered cases, preflare quasi-periodic fluctuations (QPFs) of radio emission were detected. The duration of preflare wavetrains is 6–20 min. Wavetrains consist of 3–5 pulses. QPFs ...
Added: February 17, 2025
Поведение микроволнового излучения в активных областях с «запертыми» и «открытыми» магнитными жгутами
Bakunina I. A., Мельников В. Ф., Шаин А. В. et al., В кн.: XXVIII всероссийская ежегодная конференция «Солнечная и солнечно-земная физика-2024», Труды.: СПб.: Главная (Пулковская) астрономическая обсерватория РАН, 2024. С. 25–28.
It is shown on a sample of 15 M-class X-ray flares that CMEs occur in events with «open» magnetic ropes reconstructed in the NLFFF approximation. Magnetic ropes coincide with radio brightness maxima at 17 GHz. Several hours before the flare, in the region of magnetic ropes, a glow of loops in the EUV (94, 131 ...
Added: December 1, 2024
XXVIII всероссийская ежегодная конференция «Солнечная и солнечно-земная физика-2024», Труды
СПб.: Главная (Пулковская) астрономическая обсерватория РАН, 2024.
Сборник содержит доклады, представленные на XXVIII Всероссийскую ежегодную конференцию по физике Солнца «Солнечная и солнечно-земная физика – 2024» (7 – 11 октября 2024, ГАО РАН, Санкт-Петербург). Конференция проводилась Главной (Пулковской) астрономической обсерваторией РАН при поддержке секции «Солнце» Научного совета по астрономии РАН и секции «Физика солнечной плазмы» Научного совета «Солнце-Земля». Тематика конференции включала в себя ...
Added: December 1, 2024
Magnetic Flux Ropes in Active Regions with M-Class Flares
I. A. Bakunina, Melnikov V. F., Kuznetsov S. A. et al., Geomagnetism and Aeronomy, Netherlands 2023 Vol. 63 No. 8 P. 1154–1166
The dynamics of the magnetic field reconstructed in the nonlinear force-free approximation in the pre-flare and post-flare phases of M-class X-ray flares in seven active regions is considered: two flares with a coronal mass ejection (CME), two flares with eruption but no CMEs, and three flares without eruption. Extrapolation of the magnetic field to the ...
Added: February 3, 2024
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