Search academic texts

Information × Registration Number 0225U003101, (0122U001865) , R & D reports Title Relativistic gravity, dark matter and dark energy in extragalactic and cosmological objects popup.stage_title Обмеження на параметри динамічної темної енергії. Head Parnovskyi Serhii L., Доктор фізико-математичних наук Registration Date 20-05-2025 Organization Taras Shevchenko National University of Kyiv popup.description1 Search for the effects of "New Physics" and analysis of observations of extragalactic objects, including data from gravitational wave astronomy. In particular, ways to clarify the nature of TE and TM, search for possible effects in astrophysical and cosmological processes involving scalar fields or obtaining restrictions on them. Development of theoretical foundations for testing and / or modification of the basic provisions of relativistic theory of gravitation. popup.description2 Research object: Early Universe, relativistic astrophysical objects, space-time near singularities. gravitational radiation, extragalactic gravitational lensing systems, galaxies.. Research subject: observational manifestations of dark energy (TE) and dark matter (TM), processes of gravitational radiation generation, high-energy relativistic processes in extragalactic systems, star formation processes in galaxies and gravitational microlensing. The goal and main objectives of the project: Search for the effects of "New Physics" and analysis of observations of extragalactic objects, including data from gravitational wave astronomy. In particular, ways to clarify the nature of TE and TM, search for possible effects in astrophysical and cosmological processes involving scalar fields or obtaining constraints on them. Development of theoretical foundations for testing and/or modifying the basic provisions of the relativistic theory of gravity. The main tasks involve the consistent study of scalar-field TE theories, the search for observational effects related to the action of the field in compact astrophysical objects. On this basis, conditions will be obtained for the formulation of a minimal extension of the standard cosmological model that are consistent with observational data. Analysis of the behavior of space-time near singularities, both cosmological and in astrophysical objects. Comparison of calculations of the evolution of cosmological models with observational properties of the Universe. Obtaining an estimate of the accuracy of the independent determination of the Hubble constant and the parameter. Processing and analysis of data from the most modern observations related to the processes of star formation and gravitational lensing. In particular, determining the characteristics of dust in local compact galaxies with active star formation. Product Description popup.authors Izotova Iryna Yu. Zhdanov Valerii I. Kozak Pavlo M. Lukyanyk Ihor V. Serhiienko Olha M. Stashko Oleksandr S. Yurii V. Shtanov popup.nrat_date 2025-05-20 Close