ИСТИНА

Nano-satellites of cubesat format can be used effectively for studying of different aspects of space weather phenomena, such as high energy charge particle flux variations in near-Earth space as well as for monitoring of electromagnetic transients, i.e. Cosmic Gamma Ray Bursts (GRBs), Terrestrial Gamma Ray Flashes (TGFs) and Transient Lightning Events (TLEs). The use of a group of cubesats makes it possible to carry out, in a relatively cheap way, simul- taneous measurements of radiation fluxes at different points in space, and thereby effectively separate spatial and temporal effects in the observed flux variations. On the other hand, the constellation of nanosatellites can be effectively used to observe GRBs, TGFs and TLEs, in particular, since it makes it possible to localize their sources by triangulation. Since 2019, July 5 Moscow University realizes its own program of cubesat launching. To the present 9 satellites of 1.5U, 3U and 6U formats with the instruments manufactured in Moscow University were launched, and 6 of them continue to operate on the solar-synchronous low altitude orbits (400-600 km). The number of instruments elaborated especially for cubesats include univer- sal Detector of Cosmic Radiation (DeCoR and DeCoR-2 modifications), Advanced Ultraviolet Radiometer (AURA, AURA-2 modifications) and Complex Radiation Detector (CoRaD, i.e. KODIZ in Russian acronym). The DeCoR and DeCoR-2 instruments allow detect the gamma- quanta and electrons in the energy ranges 0.02 – 2.0 MeV and 0.3 – 10.0 MeV, respectively.The KODIZ instrument is intended especially for detecting of protons with energies higher than 300 MeV and electrons with energies higher that several MeV. The AURA nd AURA-2 instruments are used for monitoring of Atmosphere UV glow in 200-400 nm bands. Up to now the good experience was obtained with the use of these instruments for measurements of different space weather effects, such as polar cups filling by solar cosmic rays, dynamics of outer belt boundaries during the geomagnetic storms, electron precipitation in different areas of near-Earth space including low-latitude regions. Also a number of TLEs as well as GRB candidates were detected. The possibility of further development of multi-satellite group and perspectives of study of mentioned above phenomena will be discussed.