Astrophysical N-body simulations: algorithms and challenges

Details Astrophysical N-body simulations: algorithms and challenges Astrophysical N-body simulations: algorithms and challenges

1997-11-20

arxiv.org/abs/astro-ph/9711238v1

Astronomy and Astrophysics

Astrophysics

10 pages, 1 figure, postscript, to appear in T. Ebisuzaki, ed, Proc. Int. Symp. on Supercomputing - New Horizon of Computation

Scientific paper

The subjects and key questions faced by computational astrophysics using N-body simulations are discussed in the fields of globular star cluster dynamics, galactic nuclei and cosmological structure formation. After a comparison of the relevance of different N-body algorithms a new concept for a more flexible customized special purpose computer based on a combination of GRAPE and FPGA is proposed. It is an ideal machine for all kinds of N-body simulations using neighbour schemes, as the Ahmad-Cohen direct N-body codes and smoothed particle hydrodynamics for systems including gas.

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