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Information × Registration Number 0222U002191, 0117U000245 , R & D reports Title "Investigation of the solar corona by the radio astronomical methods in the decameter wavelengths band". popup.stage_title Head Melnyk Valentyn M., Доктор фізико-математичних наук Registration Date 10-02-2022 Organization Radio Astronomical Institute of the National Academy of Sciences of Ukraine popup.description2 Object of study. Solar radio emission in the decameter band. The purpose of the work. Study of the properties of the coronal solar plasma based on the analysis of solar radio emission in the decameter wavelength band using spectral characteristics and the results of interferometric observations. The research consisted of observations of solar radio emission in the decameter wavelength range with UTR-2 and GURT radio telescopes in wide frequency bands - 10-30 MHz and 10-70 MHz involving URAN-2, LOFAR and NenuFAR radio telescopes. Annually the project consisted of observations, data processing, data interpretation and creation of models and theories explaining different types of the sporadic solar radio emission. For the first time a type III burst decay into two separate type III bursts was observed, confirming the previously developed theoretical model. The geometric and physical properties of the high coronal loop were determined by the spectral parameters of the associated solar U-burst with equally developed ascending and descending branches. For the first time in the decameter band the spatial properties of the sources of type II burst fine structures were determined. It is found that the source of the type IV burst is the core of the associated with the burst CME. For the first time through the analysis of the spectral characteristics of type IV bursts the CME physical parameters of were obtained, namely the size of the CME core, its mass, density profile and plasma temperature inside it. For the first time the degree of circular polarization of solar spikes band was measured in a wide frequency. It was found that in an individual spike the maximum of polarization precedes the maximum of flux. For the first time the size of the "quiet" Sun in the meridional and equatorial directions were determined from the interferometric observations of the Sun. Brightness temperatures of the solar thermal radio radiation in the decameter range were obtained. Product Description popup.authors Brazhenko Аnayolii Ivanovich Dorovskyy Volodymyr Vitaliyovych Konovalenko Olexandr Olexandrovych Frantzusenko Anatoliy Volodymyrovych Shevchuk Mykola Viktorovych Shepelyev Valeriy Oleksandrovych popup.nrat_date 2022-03-09 Close