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April 30, 2026
HSE Researchers Compile Scientific Database for Studying Childrens Eating Habits
The database created at HSE University can serve as a foundation for studying children’s eating habits. This is outlined in the study ‘The Influence of Age, Gender, and Social-Role Factors on Children’s Compliance with Age-Based Nutritional Norms: An Experimental Study Using the Dish-I-Wish Web Application.’ The work has been carried out as part of the HSE Basic Research Programme and was presented at the XXVI April International Academic Conference named after Evgeny Yasin.
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April 28, 2026
Scientists Develop Algorithm for Accurate Financial Time Series Forecasting
Researchers at the HSE Faculty of Computer Science benchmarked more than 200,000 model configurations for predicting financial asset prices and realised volatility, showing that performance can be improved by filtering out noise at specific frequencies in advance. This technique increased accuracy in 65% of cases. The authors also developed their own algorithm, which achieves accuracy comparable to that of the best models while requiring less computational power. The study has been published in Applied Soft Computing.

 

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Поведение микроволнового излучения в активных областях с «запертыми» и «открытыми» магнитными жгутами

С. 25–28.
Bakunina I. A., Мельников В. Ф., Шаин А. В., Кузнецов С. А., Абрамов-Максимов В. Е.

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 Å ) is observed; in some events, these are luminous X-structures.  The maximum radio brightness of the flare is then observed here. Fluctuations  in radio emission in events with eruptions with periods from 10 to 100 minutes are observed for several hours before the flare.

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

In book

XXVIII всероссийская ежегодная конференция «Солнечная и солнечно-земная физика-2024», Труды
XXVIII всероссийская ежегодная конференция «Солнечная и солнечно-земная физика-2024», Труды
СПб.: Главная (Пулковская) астрономическая обсерватория РАН, 2024.
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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
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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 ...
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The Frequency of Occurrence of Pre-Flare Fluctuations in Microwave Radiation of Active Regions
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We present a study of the frequency of occurrence of quasi-periodic fluctuations (QPFs) of microwave radiation from solar active regions at the pre-flare stage. We used correlation curves obtained with the Nobeyama Radioheliograph (NoRH). We analyzed 529 flares of classes X, M, and C (according to the GOES classification). In a significant number of considered events (approximately 75% ...
Added: December 28, 2023
Conditions for the Excitation of Type I Solar Bursts
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According to modern concepts, Type I noise storms in the meter wavelength range (30–400 MHz), consisting of a large number of narrow-band short bursts, are excited in the rarefied solar corona. These radiations are characterized by a high brightness temperature and circular polarization. Despite many advances in theory and confidence that the mechanism of radiation ...
Added: December 22, 2023
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