Search academic texts

Information × Registration Number 0222U003385, 0119U100330 , R & D reports Title High-energy phenomena and active processes in astrophysical and cosmological systems according to data from multichannel observations. popup.stage_title Head Zhdanov Valerii I., Доктор фізико-математичних наук Registration Date 17-03-2022 Organization Taras Shevchenko National University of Kyiv popup.description2 Object of study: Early Universe, Dark Energy (TE) and Dark Matter (TM); active nuclei of galaxies (AAS) and galaxies with a starburst; on gravitational and electromagnetic fields and black holes; pulsars and magnetars, remnants of supernovae. Purpose: to determine the nature and identification of sources of cosmic rays (CP) of ultrahigh energies; elucidation of the influence of magnetic fields in galactic and extragalactic systems on the propagation of CP; search for limitations on the model of TE and TM in astrophysical and cosmological processes, elucidation of the structure "central machine" AYAG. Research methods: methods of theoretical physics and astrophysics, mathematical statistics and regression analysis, numerical modeling. Potential sources of extremely high-energy cosmic rays have been identified among the NPPs. The contribution to the flow of cosmic rays of ultrahigh energies from near-nuclear currents in the Diva A NPP is estimated. Models of generation of electromagnetic and corpuscular radiation in the vicinity of pulsars and magnetars are developed. The contributions of pulsars and magnetars to the observed fluxes of electromagnetic radiation and electron-positron cosmic rays are estimated. Prepared and substantiated proposals for projects of observations with STA. The modulation of cosmic ray fluxes by the Sun's magnetic fields has been studied. Observational data in the X-ray and radio range of the peculiar NPP 3C 111, 3C 120 and SBS 1353 + 564 were processed and modeled. The contributions of the components to the X-ray spectra of the nuclear power plant: jet and corona / accretion disk are separated. The physical characteristics of compact galaxies with active formation for new samples from the latest sky surveys have been determined. Possibilities of application of microlensing effects in galactic systems to check the formula of gravitational refraction and in extragalactic - to determine asymmetric source orientation.   Product Description popup.authors Izotova Iryna Yu. Aleksandrov Oleksandr M. Voyzehovskiy Vadym V. Hnatyk Bohdan I. Hnatyk Roman В. Dyachenko Nadiya M. Lozitska Natalya Yo. Parnovskyi Serhii L. Sergijenko Olga M. Sliusar Vitalii M. Stashko Oleksandr S. Fedorova Оlena V. Shtanov Yurij V. popup.nrat_date 2022-03-17 Close