Zobrazeno 1 - 10
of 7 482
pro vyhledávání: '"Ishchenko, A. A."'
Aims. We identify the possible dynamical connection between individual r-process-enhanced stars and the ultra-faint dwarf galaxy Reticulum II based on the current phase-space information for these stars and the dynamical mass-loss model of Reticulum
Externí odkaz:
http://arxiv.org/abs/2411.11134
Context. Many Milky Way globular clusters (GCs) host multiple stellar populations, challenging the traditional view of GCs as single-population systems. It has been suggested that second-generation stars could form in a disk from gas lost by first-ge
Externí odkaz:
http://arxiv.org/abs/2411.02303
Publikováno v:
Vol. 90 No. 3 (2024), 14-20: Recent Contributions to Physics (Rec.Contr.Phys.)
In this study, we investigate the contribution of millisecond pulsars (MSPs) to the gamma-ray excess observed in the Galactic Center by analyzing data from high-resolution direct N-body simulations of six globular clusters (GCs) that experience close
Externí odkaz:
http://arxiv.org/abs/2410.15857
Autor:
Salter, Patrick, Wilkerson, Celina, Huang, Qiuhua, Tabares-Velasco, Paulo Cesar, Zhao, Dongbo, Ishchenko, Dmitry
High penetration of distributed energy resources in distribution systems, such as rooftop solar PVs, has caused voltage fluctuations which are much faster than typical voltage control devices can react to, leading to increased operation cost and redu
Externí odkaz:
http://arxiv.org/abs/2410.14907
Based on the available observational data from the literature, we analysed the dynamics of the NGC 6240 galaxy central supermassive black hole (SMBH) system. For the dynamical modelling of this triple SBMH system, we used the massively parallel and G
Externí odkaz:
http://arxiv.org/abs/2407.00473
Autor:
Ishchenko, M., Berczik, P., Panamarev, T., Kuvatova, D., Kalambay, M., Gluchshenko, A., Veles, O., Sobolenko, M., Sobodar, O., Omarov, C.
Context. Based on the Gaia DR3, we reconstructed the orbital evolution of the known Milky Way globular clusters and found that six objects, NGC 6681, NGC 6981, Palomar 6, NGC 6642, HP 1, and NGC 1904, very likely interact closely with the nuclear sta
Externí odkaz:
http://arxiv.org/abs/2406.18987
Autor:
Ishchenko, Maryna, Kovaleva, Dana A., Berczik, Peter, Kharchenko, Nina V., Piskunov, Anatoly E., Polyachenko, Evgeny, Postnikova, Ekaterina, Just, Andreas, Borodina, Olga, Omarov, Chingis, Sobodar, Olexandr
In a previous paper using Gaia DR2 data, we demonstrated that the two closely situated open clusters Collinder 135 and UBC 7 might have formed together about 50 Myr ago. In this work, we performed star-by-star dynamical modelling of the evolution of
Externí odkaz:
http://arxiv.org/abs/2404.12255
Publikováno v:
Astronomy & Astrophysics, Volume 683, id.A146, (2024)
The present epoch of the Gaia success gives us a possibility to predict the dynamical evolution of our Solar System in the global Galactic framework with high precision. We statistically investigated the total interaction of globular clusters with th
Externí odkaz:
http://arxiv.org/abs/2401.03518
Publikováno v:
Medičnì Perspektivi, Vol 29, Iss 3, Pp 151-161 (2024)
Dental caries is one of the most common health problems. The aim of the research was to study the spectrum of microbiota, which is part of the dental biofilm, and its biological properties. The study involved 90 participants of the study group and 20
Externí odkaz:
https://doaj.org/article/91d64f6435d1447499f112d5c772355c
Autor:
Anatoliy Ishchenko, Volodymyr Kravchenko, Artem Arustamian, Dmytro Rassokhin, Dimitrij Seibert, Olena Nosovska, Robert Böhm, Stanislav Kapustin
Publikováno v:
Applied Mechanics, Vol 5, Iss 3, Pp 619-633 (2024)
Long-term operation of the supporting surfaces of large-sized parts, in particular tubular units of thermal power plants, leads to the destruction of the contact surfaces. Moisture penetrates into the formed discontinuities, and the vibrations presen
Externí odkaz:
https://doaj.org/article/6ad31fcebc4d45cbb2c902bc0a54827d