✦ LIBER ✦

Direct N-body simulations

✍ Scribed by Rainer Spurzem

Book ID: 104339029
Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 385 KB
Volume: 109
Category: Article
ISSN: 0377-0427
DOI: 10.1016/s0377-0427(99)00166-1

No coin nor oath required. For personal study only.

✦ Synopsis

Special high-accuracy direct force summation N -body algorithms and their relevance for the simulation of the dynamical evolution of star clusters and other gravitating N -body systems in astrophysics are presented, explained and compared with other methods. Other methods means here approximate physical models based on the Fokker-Planck equation as well as other, approximate algorithms to compute the gravitational potential in N -body systems. Questions regarding the parallel implementation of direct "brute force" N -body codes are discussed. The astrophysical application of the models to the theory of relaxing rotating and non-rotating collisional star clusters is presented, brie y mentioning the questions of the validity of the Fokker-Planck approximation, the existence of gravothermal oscillations and of rotation and primordial binaries.

📜 SIMILAR VOLUMES

Direct N-body Simulations of Rubble Pile

Direct N-body Simulations of Rubble Pile Collisions

✍ Zoë M. Leinhardt; Derek C. Richardson; Thomas Quinn 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 637 KB

There is increasing evidence that many kilometer-sized bodies in the Solar System are piles of rubble bound together by gravity. We present results from a project to map the parameter space of collisions between kilometer-sized spherical rubble piles. The results will assist in parameterization of c

High-performance direct gravitational N-

High-performance direct gravitational N-body simulations on graphics processing units

✍ Simon F. Portegies Zwart; Robert G. Belleman; Peter M. Geldof 📂 Article 📅 2007 🏛 Elsevier Science 🌐 English ⚖ 235 KB

Performance analysis of direct N-body al

Performance analysis of direct N-body algorithms for astrophysical simulations on distributed systems

✍ Alessia Gualandris; Simon Portegies Zwart; Alfredo Tirado-Ramos 📂 Article 📅 2007 🏛 Elsevier Science 🌐 English ⚖ 351 KB

N-Body Simulations on Massively Parallel

N-Body Simulations on Massively Parallel Architectures

✍ L. Stiller; L.L. Daemen; J.E. Gubernatis 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 151 KB

Superlarge-scale structure in N-body sim

Superlarge-scale structure in N-body simulations

✍ A. G. Doroshkevich; V. Müller; J. Retzlaff; V. Turchaninov 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 640 KB

Detecting irregular orbits in gravitatio

Detecting irregular orbits in gravitational N-body simulations

✍ J.F. Gemmeke; S.F. Portegies Zwart; C.J.H. Kruip 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 433 KB

We present a qualitative diagnostic based on the continuous wavelet transform, for the detection of irregular behaviour in time series of particle simulations. We apply the method to three qualitatively different gravitational 3-body encounters. The intrinsic irregular behaviour of these encounters