Registration Number
0225U001180,
(0120U104575)
, R & D reports
Title
Morphology and dynamics of multicomponent cosmic systems
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Морфологія та динаміка багатокомпонентних космічних систем
Head
Panko Olena O., Доктор фізико-математичних наук
Registration Date
27-01-2025
Organization
Odessa I. I. Mechnikov National University
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The study of the peculiarities of the observational distribution and properties of galaxies in galaxy clusters and calculations of the characteristic of motion in the systems of three or more bodies on different spatial and temporal scales. The largest value of the scale gives us estimation of the evolution of galaxy clusters, intermediate one allows to study binary stars with an additional component or extrasolar planetary systems, the smallest scale concerns the study of orbits of potentially dangerous asteroids (near-Earth object) as well as the spacecrafts.
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On a cosmological scale, the complex regular substructures in galaxy clusters and the non-random galaxy orientations in these substructures were detected as statistically significant. The parameters of the radio flux variations of the Cas A supernova over 70 years were obtained. On the scale of our Galaxy, the parameters of brightness variations of 87 variable stars were obtained at first; an analysis of the photometric variability of the star FI Sge was carried out based on the data covering 4 seasons of observations, a new criterion for period refinement was formed, and additional variability modulations were found, in addition to the pulsations and the Blazhko effect. The newly observed data for the cataclysmic star ASAS J071404+7004.3 were obtained on the AZT-3 telescope (NDI "AO" ONU) in the international observational campaigns, it was shown the star is variable IW And type. On the scale of the Solar system, the parameters of the influence of nearest stars on the shape of the orbits of the Solar system peripherical bodies were obtained, and the equal gravitational potential surfaces were modeled. It is shown that for certain values of the gravitational potential, the Sun is inside the common equipotential surface with Toliman, Sirius, and Procyon. The instability of orbits with a radius of 60,000 AU was shown by the numerical integration method using 150 test bodies. As part of the international campaign, the double asteroid system Didymos/Dimorphos was observed and the collision with the DART probe results were studied. New models of the shapes and orientations of the rotation axes for more than 40 asteroids in the inner part of the Main Asteroid Belt were obtained. Numerical integration of the orbits of 27 basalt asteroids over 2 billion years in the past has been completed for a better understanding of the connection of these objects with the dynamic Vesta family. Refined physical parameters for the "Hot population" of Kuiper Belt objects are obtained.
Product Description
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Yemelianov Sviatoslav І.
Baziei Oleksandr A.
Batalska Anastasiia O.
Horbachova Alisa S.
Horbunov Artem A.
Zabora Daniil А.
Keir Leonid E.
Korshunov Valerii M.
Marsakova Vladyslava I.
Okhotko Hanna К.
Panko Olena O.
Tvardovskyi Dmytro Ye.
Troianskyi Volodymyr V.
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2025-01-27
