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Related papers: Monte-Carlo Simulations of Globular Cluster Evolut…

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Grand canonical Monte Carlo simulations are used to explore the metastable fluid-fluid coexistence curve of the modified Lennard-Jones model of globular proteins of ten Wolde and Frenkel (Science, v277, 1975 (1997)). Using both mixed-field…

Soft Condensed Matter · Physics 2009-11-10 D. L. Pagan , M. E. Gracheva , J. D. Gunton

A numerically exact Monte Carlo scheme for calculation of open quantum system dynamics is proposed and implemented. The method consists of a Monte-Carlo summation of a perturbation expansion in terms of trajectories in Liouville phase-space…

Chemical Physics · Physics 2014-11-10 Jan Olsina , Tobias Kramer , Christoph Kreisbeck , Tomas Mancal

The thesis deals with the first stage of planet formation, namely dust coagulation from micron to millimeter sizes in circumstellar disks. For the first time, we collect and compile the recent laboratory experiments on dust aggregates into…

Earth and Planetary Astrophysics · Physics 2010-11-02 Andras Zsom

We present a new theoretical framework for modelling the cluster growing process. Starting from the initial tetrahedral cluster configuration, adding new atoms to the system and absorbing its energy at each step, we find cluster growing…

Atomic and Molecular Clusters · Physics 2007-05-23 A. Koshelev , A. Shutovich , Il. A. Solov'yov , A. V. Solov'yov , W. Greiner

I present a simplified analytical model that simulates the evolution of the binary population in a dynamically evolving globular cluster. A number of simulations have been run spanning a wide range in initial cluster and environmental…

Astrophysics · Physics 2009-11-13 A. Sollima

Dynamical evolution drives globular clusters toward core collapse, which strongly shapes their internal properties. Diagnostics of core collapse have so far been based on photometry only, namely on the study of the concentration of the…

Astrophysics of Galaxies · Physics 2018-02-14 P. Bianchini , J. J. Webb , A. Sills , E. Vesperini

Evolution of the mass function (MF) and radial distribution (RD) of the Galactic globular cluster (GC) system is calculated using an advanced and a realistic Fokker-Planck (FP) model that considers dynamical friction, disc/bulge shocks and…

Astrophysics · Physics 2009-11-13 Jihye Shin , Sungsoo S. Kim , Koji Takahashi

We present new Fokker-Planck models of the evolution of globular clusters, including gravitational tidal shocks. We extend our calculations beyond the core collapse by adopting three-body binary heating. Effects of the shocks are included…

Astrophysics · Physics 2009-10-30 Oleg Y. Gnedin , Hyung Mok Lee , Jeremiah P. Ostriker

We explore the evolution of various properties of multiple-population globular clusters (GCs) for a broad range of initial conditions. We simulated over 200 GC models using the MOCCA Monte Carlo code and find that present-day properties…

We compare dense clumps and cores in a numerical simulation of molecular clouds (MCs) undergoing global hierarchical collapse (GHC) to observations in two MCs at different evolutionary stages, the Pipe and the G14.225 clouds, to test the…

Astrophysics of Galaxies · Physics 2020-11-11 Vianey Camacho , Enrique Vázquez-Semadeni , Aina Palau , Gemma Busquet , Manuel Zamora-Avilés

The formation and evolution of protoplanetary systems, the breeding grounds of planet formation, is a complex dynamical problem that involves many orders of magnitudes. To serve this purpose, we present a new hybrid algorithm that combines…

Earth and Planetary Astrophysics · Physics 2011-06-01 Patrick Glaschke , Pau Amaro-Seoane , Rainer Spurzem

To be presented is a study of the secular evolution of a spherical stellar system with a central star-accreting black hole (BH) using the anisotropic gaseous model. This method solves numerically moment equations of the full Fokker-Planck…

Astrophysics · Physics 2009-11-10 Pau Amaro-Seoane , Marc Freitag , Rainer Spurzem

For the description of thermally activated dynamics in systems of classical magnetic moments numerical methods are desirable. We consider a simple model for isolated magnetic particles in a uniform field with an oblique angle to the easy…

Statistical Mechanics · Physics 2009-10-31 U. Nowak , R. W. Chantrell , E. C. Kennedy

We present a novel method combining existing cosmological simulations and orbital integration to study the hierarchical assembly of globular cluster (GC) populations in the Milky Way (MW). Our method models the growth and evolution of GC…

Astrophysics of Galaxies · Physics 2026-01-14 Pierre Boldrini , Paola Di Matteo , Chervin Laporte , Oscar Agertz , Sergey Khoperskov , Giulia Pagnini

We present a program tool, SimClust, designed for Monte-Carlo modeling of star clusters. It populates the available stellar isochrones with stars according to the initial mass function and distributes stars randomly following the analytical…

Astrophysics of Galaxies · Physics 2009-05-25 V. Deveikis , D. Narbutis , R. Stonkute , A. Bridzius , V. Vansevicius

We review what has been learned recently using N-body simulations about the evolution of globular clusters. While simulations of star clusters have become more realistic, and now include the evolution of single and binary stars, the…

Astrophysics · Physics 2007-05-23 Douglas C. Heggie

Monte Carlo simulations have boosted the numerical study of several different physical systems and in particular, the canonical ensemble has been especially useful because of the existence of easy and efficient relaxation algorithms…

Statistical Mechanics · Physics 2019-10-29 G. Palma , A. Riveros

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…

Astrophysics of Galaxies · Physics 2024-06-28 M. Ishchenko , P. Berczik , T. Panamarev , D. Kuvatova , M. Kalambay , A. Gluchshenko , O. Veles , M. Sobolenko , O. Sobodar , C. Omarov

We have studied the dynamical evolution of rotating globular clusters with direct $N$-body models. Our initial models are rotating King models; we obtained results for both equal-mass systems and systems composed out of two mass components.…

Astrophysics · Physics 2009-10-07 Andreas Ernst , Patrick Glaschke , Jose Fiestas , Andreas Just , Rainer Spurzem

We recently introduced three new parameters that describe the shape of the normalized cumulative radial distribution (nCRD) of the innermost stars in globular clusters and trace the clusters dynamical evolution. Here we extend our previous…