The deployment of the MSU nanosatellite constellation “Sozvezdie-270” continues. To date, 20 CubeSat satellites have been launched with equipment for monitoring cosmic radiation and electromagnetic transients of various natures, including atmospheric, astrophysical and solar origin. This paper uses data from five CubeSats launched on June 27, 2023 (Avion, Monitor-2, Monitor-3, Monitor-4, UTMN-2) and two CubeSats launched on November 5, 2024 (Altair. ArcticSat). Each of them is equipped with DeCoR scintillation detectors for recording hard X-ray and gamma radiation and charged particles, specially developed at the SINP MSU for such experiments. The paper presents the results of observations of space weather phenomena that lead to significant changes in radiation conditions in near-Earth space. Such phenomena that can be recorded in experiments on the CubeSats of the “Sozvezdie-270” group include hard X-ray and gamma radiation from solar flares; solar cosmic rays (SCR) recorded on CubeSats in the polar cap region; variations in the intensity and spatial structure of the distribution of high-energy electron fluxes in the Earth’s outer radiation belt during magnetic storms caused by changes in solar wind parameters due to active processes on the Sun – both the arrival of coronal mass ejections in the Earth’s orbit and high-speed solar wind flows from coronal holes. The table of solar flares observed in HXR on the MSU CubeSats from September 2023 to February 2025 is given.
Bogomolov et al. (Wed,) studied this question.
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