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Information × Registration Number 0218U003014, 0117U002810 , R & D reports Title Astrophysical numerical simulation of the dynamic evolution of galaxies and galactic structures using GRID / GPU GAO cluster popup.stage_title Head Berczik P.P., Registration Date 05-01-2018 Organization Main Astronomical Observatory popup.description2 We derive maps of the observed velocity of ionized gas, the oxygen abundance, and the extinction (Balmer decrement) across the area of the four spiral galaxies NGC 36, NGC 180, NGC 6063, and NGC 7653 from integral field spectroscopy obtained by the Calar Alto Legacy Integral Field Area (CALIFA) survey. We identified a metallicity gradient in our target galaxies. Both barred galaxies in our sample show flatter gradients than the two galaxies without bars. Galactic inclination, position angle of the major axis, and the rotation curve were also obtained for each target galaxy using the Fourier analysis of the two-dimensional velocity map. According to the simulation results, the evolution can be divided into three phases. In phase I, the TD rate for two well separated SMBHs in a merging system is similar to that for a single SMBH in an isolated galaxy. After two SMBHs approach close enough to form a bound binary in phase II, the disruption rate can be enhanced by ~2 orders of magnitude within a short time. This "boosted" disruption stage finishes after the SMBHB evolves to a compact binary system in phase III, corresponding to a reduction in disruption rate back to a level of a few times higher than in phase I. We find that the initial orbital plane orientation and eccentricity alone can change the in-spiral time by an order of magnitude. The work under the optimization the software package for modeling the dynamic evolution of the galactic disk allows one to speed up the order of speed of calculations in the hydrodynamic part of the code and calculate the gravitational interaction on the CUDA platform. Product Description popup.authors Іванов Д.Д. Берцик Петер Петерович Велесь Олександр Анатолійович Зінченко І.А. Соболенко М.О. popup.nrat_date 2020-04-02 Close