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Information × Registration Number 0225U000441, (0120U100280) , R & D reports Title Diagnostics of magnetic, thermal and dynamic structure of the outer solar atmosphere popup.stage_title Діагностика магнітної, теплової і динамічної структури зовнішньої сонячної атмосфери Head Shchukina Nataliia H., Доктор фізико-математичних наук Registration Date 11-01-2025 Organization Main Astronomical Observatory of the National Academy of Sciences of Ukraine popup.description1 The aim of the project is to study the magnetic, thermal and dynamic phenomena observed in the upper layers of the solar atmosphere, including the temperature minimum, chromosphere, corona and the solar wind. popup.description2 Object of study - The Sun: magnetic fields of the granulation grid of the quiet Sun, magnetic formations in active areas on the Sun (flares, spots, matter emissions, photospheric jets, Ellerman bombs, flares, etc.), the velocity field and wave processes in them, magnetized solar and cosmic plasma, processes of reconnection of magnetic field lines in solar plasma, spectral lines. The purpose of the study – The study of the set of magnetic, thermal, and dynamic phenomena observed in the upper layers of the solar atmosphere, including the temperature minimum, chromosphere, corona, and solar wind. Research Method - 1) spectral, spectropolarimetric and filter observations of the Sun, 2) solution of multilevel problems of polarized radiation transport within the framework of quantum polarization theory for the case of a three-dimensional environment, 3) mathematical modeling of wave propagation in the solar atmosphere within the framework of a non-uniform dynamic model of the atmosphere, 4) wavelet analysis of changes in climatic parameters with solar activity, 5) simulation of the H I Ly-α resonance line in a three-dimensional model of the chromosphere taking into account the effects of 3D radiation transport and the effects of the NPP scattering in the line. Results and their novelty - 1) a large class of allowed extreme ultraviolet spectral lines of highly ionized iron and silicon atoms was discovered, which are linearly polarized due to the so-called atomic polarization mechanism, 2) it was shown that the spectral lines from quiet areas of the Sun's surface respond to modulation of the general magnetic field, 3) the features of the development, changes in the structure of the magnetic field, flare activity and its impact on the Earth of active regions of various types were investigated, 4) it was found that the radial direction of sound wave propagation in the solar atmosphere depends on the magnitude of the magnetic field strength.   Product Description popup.authors Vasylieva Iryna E. Kondrashova Nina M. Kostyk Roman I. Liubchyk Olena K. Osipov Serhii M. Pishkalo Mykola I. Pasechnyk Marharyta M. Sukhorukov Andrii V. Khomenko Olena V. Chornohor Svitlana M. popup.nrat_date 2025-01-11 Close