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Registration Number

0222U001149, 0119U002211 , R & D reports

Title

Solar and interstellar plasma: magnetism, dynamics and geophysical manifestations of the solar activity.

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Head

Стоділка Мирослав Іванович,

Registration Date

24-01-2022

Organization

Ivan Franko National University of Lviv

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 Object of study: magnetized plasma of the solar atmosphere, quiet solar atmosphere, small-scale formations with strong magnetic fields, nebular environments (NE), space weather, near-Earth space, Earth's artificial satellites. Aims: study of physical conditions and dynamics of magnetized solar and interstellar plasma, small-scale dynamo in the solar photosphere, long-term changes in the solar photosphere, influence of magnetic field polarity on geomagnetic perturbations, influence of solar activity (SA) on satellites. Methods: an alternative approach to the diagnosis of magnetic fields; improved algorithms for the inverse nonequilibrium radiative transfer problem; method of photoionization modelling of NE; observational data from modern telescopes, including telescopes of AO LNU and MAO NASU and from geomagnetic observatory "Lviv". Results. The physical conditions in the magnetized solar atmosphere were studied. In particular, we constructed 3D models of small-scale magnetic formations and active regions, which allowed to study the generation/amplification of magnetic field by convection. The study of the microturbulence anisotropy allowed the diagnosis of magnetic fields in the upper atmosphere. According to observations at ATsU-5 in MAO, models of the dynamics of the unperturbed solar atmosphere are constructed. The chemical composition of metal-rich HII regions is obtained taking into account their internal structure and its evolution, the physical characteristics of planetary nebulae are specified, the scope of diagnostic methods is estimated. We studied the connection between geomagnetic perturbations and SA during the periods of polarity reversal. We constructed models of geomagnetic variations separated from external sources at different time scales. The method of calculating the forecast of geomagnetic activity was improved. The database of satellite observations was supplemented, the influence of light pressure on the dynamics of satellites was studied.

Product Description

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Baran Oleksandra A.
Hirnyak Maria B.
Koval'chuk Maria M.
Melekh Bohdan Ya.
Prysiazhnyi Andrii I.
Sumaruk Yurii P.
Tyshko Nestor L.
Shchukina Nataliya G.

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2022-03-09