Simulating Cosmic Structure at High Resolution: Towards a Billion Particles?

Details Simulating Cosmic Structure at High Resolution: Towards a Billion Particles? Simulating Cosmic Structure at High Resolution: Towards a Billion Particles?

1997-09-30

arxiv.org/abs/astro-ph/9709299v1

Astronomy and Astrophysics

Astrophysics

11 pages including 1 figure, PASP conference latex macros. Invited review talk to appear in the proceedings of the 12th "Kings

Scientific paper

Cosmic structure simulations have improved enormously over the past decade, both in terms of the resolution which can be achieved, and with the addition of hydrodynamic and other techniques to formerly purely gravitational methods. This is an informal, and perhaps idiosyncratic, overview of the state and progress of cosmological simulations over this period. I will discuss the strategies that are used to understand cosmic structure formation and the requirements of a successful simulation. The computational demands of cosmological simulations in general will be highlighted as will specific features of the various different algorithms that are used. The incessant push for greater resolution has lead to an increasing use of parallel computers. The desirability - or otherwise - of this trend will be discussed together with alternative techniques which sidestep the naive drive for greater resolution.

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