72 citations · 274 across the 15 of their papers we have counts for
18 papers
Stellar discs and intermediate-mass black holes in galactic nuclei II. Fragmenting the disc and forming the S-stars in a live nuclear star cluster
Taras Panamarev, Bence Kocsis
We present direct -body simulations of a stellar disc around the supermassive black hole Sgr~A*, perturbed by an intermediate-mass black hole (IMBH) and embedded in a live nucle…
Simulating tidal disruption events in nuclear star clusters
Philip Cho, Kai Wu, Francesco Flammini Dotti +5
Context. Nuclear star clusters (NSCs) and supermassive black holes (SMBHs) often coexist at the centers of galaxies, engaging in complex dynamical interactions that influence SMBH…
Stellar discs and intermediate-mass black holes in galactic nuclei I. Fragmenting the disc in an isotropic stellar potential
Taras Panamarev, Xiang Zou, Bence Kocsis
The origin of the complex orbital structure of young massive stars at the Galactic centre remains an open question. If these stars formed in a single episode from a gaseous accreti…
The contribution to Galactic Centre γ-ray excess from cluster-born millisecond pulsars. Constraints from direct N-body simulations
M. Kalambay, M. Ishchenko, D. Kuvatova +2
The Galactic Centre γ-ray excess (GCE), observed by Fermi-LAT around Sgr A*, exceeds expectations from standard cosmic-ray models and is commonly attributed either to dark matter a…
Modeling Tidal Disruption Events and Compact Object Plunges in Nuclear Star Clusters
Philip Cho, Kai Wu, Francesco Flammini Dotti +2
We study tidal disruption events (TDEs) and compact object inspirals in nuclear star clusters (NSCs) hosting a central supermassive black hole (SMBH), focusing on their role in SMB…
How our proto-nuclear star cluster formed and grew due to early globular cluster disruption. I. Case of low masses
D. Kuvatova, M. Ishchenko, P. Berczik +3
We investigate the accretion of globular cluster stars on early cosmological timescales through detailed N-body simulations of theoretical GC models to assess the role of this mech…
Angular-momentum pairs in spherical systems: applications to the Galactic centre
Taras Panamarev, Yonadav Barry Ginat, Bence Kocsis
Consider a system of point masses in a spherical potential. In such systems objects execute planar orbits covering two-dimensional rings or annuli, represented by the angular-momen…
Evolution of the disky second generation of stars in globular clusters on cosmological timescale
Peter Berczik, Taras Panamarev, Maryna Ishchenko +1
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…
Estimating Gamma-Ray Flux from Millisecond Pulsars Originating in Globular Clusters Near the Galactic Center
Dana Kuvatova, Taras Panamarev, Maryna Ishchenko +2
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…
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 +7
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,…
Milky Way globular clusters on cosmological timescales. II. Interaction with the Galactic centre
Maryna Ishchenko, Margaryta Sobolenko, Dana Kuvatova +2
Aims. We estimate the dynamical evolution of the Globular Clusters interaction with the Galactic centre that dynamically changed in the past. Methods. We simulated the orbits of 14…
Statistical Analysis of the Probability of Interaction of Globular Clusters with Each Other and with the Galactic Center on the Cosmological Time Scale According to Gaia DR2 Data
Maryna Ishchenko, Margaryta Sobolenko, Peter Berczik +1
This study is aimed at investigating the dynamic evolution of the orbits of stellar globular clusters (GCs). To integrate the orbits backward in time, the authors use models of the…
Resonant Dynamical Friction Around a Super-Massive Black Hole: Analytical Description
Yonadav Barry Ginat, Taras Panamarev, Bence Kocsis +1
We derive an analytical model for the so-called phenomenon of `resonant dynamical friction', where a disc of stars around a super-massive black hole interacts with a massive pertur…
A numerical study of stellar discs in galactic nuclei
Taras Panamarev, Bence Kocsis
We explore the dynamics of stellar discs in the close vicinity of a supermassive black hole (SMBH) by means of direct -body simulations. We show that an isolated nuclear stellar…
The bound mass of Dehnen models with centrally peaked star formation efficiency
B. Shukirgaliyev, A. Otebay, M. Sobolenko +12
Understanding the formation of star clusters with low star-formation efficiency (SFE) is very important to know about the star-formation history. In N-body models of star cluster e…
Direct N-body simulation of the Galactic centre
Taras Panamarev, Andreas Just, Rainer Spurzem +3
We study the dynamics and evolution of the Milky Way nuclear star cluster performing a high resolution direct one-million-body simulation. Focusing on the interactions between such…
Star-disc interaction in galactic nuclei: formation of a central stellar disc
Taras Panamarev, Bekdaulet Shukirgaliyev, Yohai Meiron +5
We perform high resolution direct -body simulations to study the effect of an accretion disc on stellar dynamics in an active galactic nucleus (AGN). We show that the interactio…
Star-disc interaction in galactic nuclei: orbits and rates of accreted stars
Gareth F. Kennedy, Yohai Meiron, Bekdaulet Shukirgaliyev +4
We examine the effect of an accretion disc on the orbits of stars in the central star cluster surrounding a central massive black hole by performing a suite of 39 high-accuracy dir…