Comparative study between N-body and Fokker-Planck simulations for rotating star clusters: I. Equal-mass system

Abstract

We have carried out N-body simulations for rotating star clusters with equal mass and compared the results with Fokker-Planck models. These two different approaches are found to produce fairly similar results, although there are some differences with regard to the detailed aspects. We confirmed the acceleration of the core collapse of a cluster due to an initial non-zero angular momentum and found a similar evolutionary trend in the central density and velocity dispersion in both simulations. The degree of acceleration depends on the initial angular momentum. Angular momentum is being lost from the cluster due to the evaporation of stars with a large angular momentum on a relaxation time scale.

11 pages, 13 eps figures, accepted for the publication of MNRAS

References in corpus (25)

• The Evolution of Globular Clusters in the Galaxy
• Efficient Merger of Binary Supermassive Black Holes in Non-Axisymmetric Galaxies
• GRAPE-6: The massively-parallel special-purpose computer for astrophysical particle simulation
• Statistics of N-body Simulations I. Equal Masess Before Core Collapse
• Performance Analysis of Direct N-Body Algorithms on Special-Purpose Supercomputers
• Scaling of N-body calculations
• Monte-Carlo Simulations of Globular Cluster Evolution - I. Method and Test Calculations
• Evolution of Massive Black Hole Binaries
• GRAPE-6A: A single-card GRAPE-6 for parallel PC-GRAPE cluster system
• Runaway collisions in young star clusters. I. Methods and tests
• A comprehensive Nbody study of mass segregation in star clusters: Energy equipartition and escape
• A new Monte Carlo code for star cluster simulations: I. Relaxation
• N-body Models of Rotating Globular Clusters
• Dynamical evolution of rotating stellar systems - II. Post-collapse, equal mass system
• Comparing Direct N-Body Integration with Anisotropic Gaseous Models of Star Clusters
• Statistics of N-Body Simulations. II. Equal Masses after Core Collapse
• Direct collisional simulation of 10 000 particles past core collapse
• Evolution of Massive Blackhole Triples I -- Equal-mass binary-single systems
• Dynamical Evolution of Rotating Stellar Systems: III. The Effect of Mass Spectrum
• Fokker-Planck Models of Star Clusters with Anisotropic Velocity Distributions. II. Post-Collapse Evolution
• 2D Fokker-Planck models of rotating clusters
• Fokker-Planck Models of Star Clusters with Anisotropic Velocity Distributions. III. Multi-Mass Clusters
• The disruption of globular star clusters in the galaxy: A comparative analysis between Fokker-Planck and N-body models
• Effects of External Tidal Field on the Evolution of Multi-mass Star Clusters
• Anisotropic gaseous models of tidally limited star clusters -- comparison with other methods

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• Relativistic Binaries in Globular Clusters
• MOCCA Code for Star Cluster Simulations - II. Comparison with N-body Simulations
• N-body simulations of gravitational dynamics
• The internal rotation of globular clusters revealed by Gaia DR2
• Rotating Globular Clusters
• Dense Stellar Populations: Initial Conditions
• Halo globular clusters observed with AAOmega: dark matter content, metallicity and tidal heating
• Monte Carlo Simulations of Star Clusters - VII. The globular cluster 47 Tuc
• Preparing the next gravitational million-body simulations: Evolution of single and binary stars in Nbody6++GPU, MOCCA and McLuster
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• Self-consistent models of quasi-relaxed rotating stellar systems
• Comparative study between N-body and Fokker-Planck simulations for rotating star clusters - II. 2-component models
• Shape parameters of Galactic open clusters
• Kinematical evolution of tidally limited star clusters: rotational properties
• The evolution of the binary population in globular clusters: a full analytical computation
• Kinematical evolution of multiple stellar populations in star clusters
• The dynamical fate of binary star clusters in the Galactic tidal field
• The impact of stellar evolution on rotating star clusters: the gravothermal-gravogyro catastrophe and the formation of a bar of black holes
• Structure and rotation of young massive star clusters in a simulated dwarf starburst
• Revisiting relaxation in globular clusters
• The role of rotation on the formation of second generation stars in globular clusters
• The structure of star clusters in the outer halo of M31
• Evolution of growing black holes in axisymmetric galaxy cores
• Early dynamical evolution of rotating star clusters in a tidal field
• Resonant and non-resonant relaxation of globular clusters
• Growth of Massive Black-Holes in FFB Galaxies at Cosmic Dawn
• Anisotropic Mass Segregation in Rotating Globular Clusters
• Relaxation of spherical stellar systems
• The Formation of Binary Star Clusters in the Milky Way and Large Magellanic Cloud
• The internal proper motion kinematics of NGC346: past formation and future evolution
• Higher order moment models of dense stellar systems: Applications to the modeling of the stellar velocity distribution function
• Signature of systemic rotation in 21 Galactic Globular Clusters from APOGEE-2
• Dynamics of intermediate mass black holes in globular clusters. Wander radius and anisotropy profiles
• The internal line-of-sight kinematics of NGC 346: the rotation of the core region
• Evolution of star clusters with initial bulk rotation via N-body simulations
• Non-resonant relaxation of anisotropic globular clusters
• Evolution of the kinematic properties of rotating multiple-population globular clusters
• KRIOS: A new basis-expansion $N$-body code for collisional stellar dynamics
• Direct N-body simulations of rotating and extremely massive Population III star clusters