Quasiperiodic oscillations around a Schwarzschild black hole surrounded by a Dehnen type dark matter halo

T Xamidov, U Uktamov, S Shaymatov… - Physics of the Dark …, 2025 - Elsevier
In this paper, we investigate the properties of a Schwarzschild black hole (BH) immersed in
a Dehnen-(1, 4, 0) type dark matter (DM) halo. We focus on analyzing the time-like …

Dynamical evolution of Milky Way globular clusters on the cosmological timescale-I. Mass loss and interaction with the nuclear star cluster

M Ishchenko, P Berczik, T Panamarev… - Astronomy & …, 2024 - aanda.org
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 …

Cluster membership analysis with supervised learning and N-body simulations

A Bissekenov, M Kalambay, E Abdikamalov… - Astronomy & …, 2024 - aanda.org
Context. Membership analysis is an important tool for studying star clusters. There are
various approaches to membership determination, including supervised and unsupervised …

Resonant dynamical friction around a supermassive black hole: analytical description

YB Ginat, T Panamarev, B Kocsis… - Monthly Notices of the …, 2023 - academic.oup.com
We derive an analytical model for the so-called phenomenon of resonant dynamical friction,
where a disc of stars around a supermassive black hole interacts with a massive perturber …

Schwarzschild black hole in galaxies surrounded by a dark matter halo

A Al-Badawi, S Shaymatov… - Journal of Cosmology …, 2025 - iopscience.iop.org
In this paper, we derive a novel Schwarzschild-like black hole (BH) solution describing a
static and asymptotically flat BH surrounded by a dark matter (DM) halo with a Dehnen-type …

Dynamical evolution of the open clusters with different star formation efficiencies and orbital parameters

M Ishchenko, V Masliukh, M Hradov, P Berczik… - Astronomy & …, 2025 - aanda.org
Context. Open star clusters are dynamic systems whose evolution is critically influenced by
initial conditions such as star formation efficiency and orbital parameters. Understanding …

Star-by-star dynamical evolution of the physical pair of the Collinder 135 and UBC 7 open clusters

M Ishchenko, DA Kovaleva, P Berczik… - Astronomy & …, 2024 - aanda.org
Context. 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 …

Milky Way globular clusters on cosmological timescales-IV. Guests in the outer Solar System

M Ishchenko, P Berczik, M Sobolenko - Astronomy & Astrophysics, 2024 - aanda.org
Context. 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 …

Fractal dimension of star clusters

A Akhmetali, N Ussipov, M Zaidyn… - arxiv preprint arxiv …, 2024 - arxiv.org
Quantitative analysis of the structure of star clusters is crucial for understanding their
formation and evolution. In this article, we explore the application of fractal dimension …

A Monte Carlo study of early gas expulsion and evolution of star clusters: new simulations with the MOCCA code in the amuse framework

A Leveque, M Giersz, S Banerjee… - Monthly Notices of …, 2022 - academic.oup.com
We introduce a new prescription for the evolution of globular clusters (GCs) during the initial
embedded gas phase into a Monte Carlo method. With a simplified version of the Monte …