The Dragon Simulation Project - Publications

The DRAGON simulations: globular cluster evolution with a million stars

Authors: Wang, Long; Spurzem, Rainer; Aarseth, Sverre; Giersz, Mirek; Askar, Abbas; Berczik, Peter; Naab, Thorsten; Schadow, Riko; Kouwenhoven, M. B. N.

published 02/2016

Introducing the DRAGON simulation project, we present direct N-body simulations of four massive globular clusters (GCs) with 106 stars and 5% primordial binaries at a high level of accuracy and realism. The GC evolution is computed with NBODY6++GPU and follows the dynamical and stellar evolution of individual stars and binaries, kicks of neutron stars and black holes, and the effect of a tidal field. We investigate the evolution of the luminous (stellar) and dark (faint stars and stellar remnants) GC components and create mock observations of the simulations (i.e. photometry, color-magnitude diagrams, surface brightness and velocity dispersion profiles).

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NBODY6++GPU: ready for the gravitational million-body problem

Authors: Wang, Long; Spurzem, Rainer; Aarseth, Sverre; Nitadori, Keigo; Berczik, Peter; Kouwenhoven, M. B. N.; Naab, Thorsten

published 07/2015

For The Dragon Simulation of MPA and NAOC (Silk Road Project), the GCs are simulated with the newly developed code NBODY6++GPU (Wang et al. 2015). The parallel high-performance code makes use of modern NVIDIA Kepler GPUs and is optimised with hybrid parallelisation methods (MPI, OpenMP, AVX/SSE). This enables simulations of globular clusters with the dynamical and stellar evolution of millions of individual stars at an unprecedented level of accuracy and realism. The DRAGON simulations are run on the HYDRA supercomputer hosted by the Max Planck Computing and Data Facility.

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