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We review recent progress in the description of the formation and evolution of galaxy clusters in a cosmological context by using numerical simulations. We focus our presentation on the comparison between simulated and observed X-ray…

Cosmology and Nongalactic Astrophysics · Physics 2014-03-05 Stefano Borgani , Andrey Kravtsov

Introducing the DRAGON simulation project, we present direct $N$-body simulations of four massive globular clusters (GCs) with $10^6$ stars and 5$\%$ primordial binaries at a high level of accuracy and realism. The GC evolution is computed…

Solar and Stellar Astrophysics · Physics 2016-03-29 Long Wang , Rainer Spurzem , Sverre Aarseth , Mirek Giersz , Abbas Askar , Peter Berczik , Thorsten Naab , Riko Schadow , M. B. N. Kouwenhoven

Three-body effects greatly complicate stellar evolution. We model the effects of encounters of binaries with single stars, based on parameters chosen from conditions prevalent in the cores of globular clusters. For our three-body…

Astrophysics · Physics 2009-09-25 Simon F. Portegies Zwart , Piet Hut , Stephen L. W. McMillan , Frank Verbunt

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 stellar system and the central supermassive black hole, we…

Astrophysics of Galaxies · Physics 2019-01-21 Taras Panamarev , Andreas Just , Rainer Spurzem , Peter Berczik , Long Wang , Manuel Arca Sedda

We present results of N-body simulations aimed at understanding the dynamics of young stars near the Galactic center. Specifically, we model the inspiral of a cluster core containing an intermediate mass black hole and $N \sim 50$ cluster…

Astrophysics · Physics 2008-11-26 Steven J. Berukoff , Bradley M. S. Hansen

We investigate the long-term dynamical evolution of the internal kinematics of multimass rotating star clusters. We have performed a set of N-body simulations to follow the internal evolution of clusters with different degrees of initial…

Astrophysics of Galaxies · Physics 2022-07-06 Alexander R. Livernois , Enrico Vesperini , Anna Lisa Varri , Jongsuk Hong , Maria Tiongco

State-of-the-art cosmological hydrodynamical simulations have star particles with typical mass between $\sim 10^8$ and $\sim 10^3$ M$_{\odot}$ according to resolution, and treat them as simple stellar populations. On the other hand,…

Astrophysics of Galaxies · Physics 2018-07-31 Milena Valentini , Alessandro Bressan , Stefano Borgani , Giuseppe Murante , Léo Girardi , Luca Tornatore

This paper studies the dynamical evolution of young stellar clusters with $N$ = 100 - 1000 members. We use N-body simulations to explore how evolution depends on system size $N$ and the initial conditions. Motivated by recent observations…

Astrophysics · Physics 2009-11-13 Fred C. Adams , Eva M. Proszkow , Marco Fatuzzo , Philip C. Myers

Context: Star clusters form within giant molecular clouds that are strongly altered by the feedback action of the massive stars, but the cluster still remains embedded in a dense, highly turbulent medium and interactions with ambient…

Astrophysics of Galaxies · Physics 2022-11-16 Paolo Suin , Steven N. Shore , Václav Pavlík

In order to interpret the results of complex realistic star cluster simulations, which rely on many simplifying approximations and assumptions, it is essential to study the behavior of even more idealized models, which can highlight the…

Astrophysics · Physics 2009-11-11 D. C. Heggie , M. Trenti , P. Hut

We follow the evolution of the galaxy population in a Lambda-CDM cosmology by means of high-resolution N-body simulations in which the formation of galaxies and their observable properties are calculated using a semi-analytic model. We…

Astrophysics · Physics 2009-11-06 A. J. Benson , C. S. Frenk , C. M. Baugh , S. Cole , C. G. Lacey

We review recent progress in computational methods for studying the dynamical evolution of large star clusters. After describing some highlights of a new comparison of different models, including N-body models, we mention in detail recent…

Astrophysics · Physics 2007-05-23 D. C. Heggie , M. Giersz , R. Spurzem , K. Takahashi

We study the influence of the various parameters of scenarios of large-scale structure formation on properties of galaxy clusters, and investigate which cluster properties are most sensitive to these parameters. We present a set of large…

Astrophysics · Physics 2016-08-30 Pascal de Theije , Eelco van Kampen , Remco Slijkhuis

We use Enzo, a hybrid Eulerian AMR/N-body code including non-gravitational heating and cooling, to explore the morphology of the X-ray gas in clusters of galaxies and its evolution in current generation cosmological simulations. We employ…

Astrophysics · Physics 2010-11-11 Tesla E. Jeltema , Eric J. Hallman , Jack O. Burns , Patrick M. Motl

The recent availability of special purpose computers designed for calculating gravitational interactions of N-bodies at extremely high speed has provided the means to model globular clusters on a star-by-star basis for the first time. By…

Astrophysics · Physics 2009-11-07 Jarrod R. Hurley , Michael M. Shara

We present gravitational N-body simulations of the secular morphological evolution of disk galaxies induced by density wave modes. In particular, we address the demands collective effects place on the choice of simulation parameters, and…

Astrophysics of Galaxies · Physics 2016-09-16 Xiaolei Zhang

The N-independence observed in the evolution of massive black hole binaries (MBHBs) in recent simulation of merging stellar bulges suggests a simple interpretation beyond complex time-dependent relaxation processes. We conjecture that the…

Astrophysics of Galaxies · Physics 2015-10-07 Alberto Sesana , Fazeel Mahmood Khan

(Abridged) The dynamical ejection of stars from star clusters affects the shape of the stellar mass function (MF) in these clusters, because the escape probability of a star depends on its mass. The objective of this paper is to provide and…

Astrophysics of Galaxies · Physics 2015-05-14 J. M. Diederik Kruijssen

Using N-body+hydro simulations we study relations between the local environments of galaxies on 0.5 Mpc scale and properties of the luminous components of galaxies. Our numerical simulations include effects of star formation and supernova…

Astrophysics · Physics 2009-10-30 D. Elizondo , G. Yepes , R. Kates , A. Klypin

A new method is presented to describe the evolution of the orbital-parameter distributions for an initially universal binary population in star clusters by means of the currently largest existing library of N-body models. It is demonstrated…

Astrophysics of Galaxies · Physics 2015-05-28 Michael Marks , Pavel Kroupa , Seungkyung Oh
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