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Information × Registration Number 0225U002444, (0122U001578) , R & D reports Title The gravitationally lensed quasars and active galactic nuclei: searching and researching based on the modern observations popup.stage_title Пошук та дослідження ГЛК та АЯГ. Head Akhmetov Volodymyr S., Кандидат фізико-математичних наук Registration Date 11-03-2025 Organization V.N. Karazin Kharkiv National University popup.description1 The main goal of the project is to obtain new astrophysical information by studying gravitationally lensed quasars (GLQs) and active galactic nuclei (AGNs). To realize it, we will use the recent data of astronomical observations in different spectral ranges. We plan to create the most reliable sample of extragalactic objects and to make its classification into galaxies, quasars, AGNs of different types. We also plan to conduct unique monitoring observations and to improve algorithms which allow us to find new candidates for GLQs. In the framework of this investigation the theoretical model of AGNs will be developed with the applying of the results for interpretation of the observational data. popup.description2 Arefined gravitational lens model was constructed for and an estimate of the Hubble constant was obtained. The work carried out a number of numerical simulations of AGN for different gas-dust cloud distributions and different mass ratios relative to the central mass. Also, the simulation was performed taking into account dissipative forces and the effect of the wind in the throat of the torus, which significantly affect the accretion rate. The study of torus cloud velocity maps for different dissipation values was carried out. The accretion rate of clouds for different dissipation values and the effect of the wind in the throat of the torus was also studied. The work shows that taking into account dissipation and wind in the throat of the torus leads to regulated accretion, which is carried out by portioned feeding of the accretion disk while preserving the geometrically thick shape of the dust torus, which is required by a unified scheme of active galactic nuclei. Numerical simulation experiments were performed within the N-body problem of a dissipative system of a torus and a binary black hole and additional external mass accretion onto the torus for the cases of co-rotation of the torus and the system of two black holes and their counter-rotation. The experimental results demonstrated that the effect of cloud motion in opposite directions inside the torus itself does not arise for these cases. It was concluded that the main mechanism of the detected counter-rotation in the torus of the Seyfert galaxy NGC 1068 is the effect of an asymmetric wind. Product Description popup.authors Bannikova Olena Yu. Berdina Liudmyla A. Zhelezniak Oleksandr P. Synelnikov Ihor Ye. Skolota Serhii V. Tsvetkova Viktoriia S. popup.nrat_date 2025-03-11 Close