A Test of the Particle Paradigm in N-Body Simulations

Details A Test of the Particle Paradigm in N-Body Simulations A Test of the Particle Paradigm in N-Body Simulations

1996-07-30

arxiv.org/abs/astro-ph/9607152v1

Astronomy and Astrophysics

Astrophysics

Uses aasms4.sty; accepted for publication in ApJ Letters. Files available also at ftp://kusmos.phsx.ukans.edu/preprints/atest

Scientific paper

10.1086/310298

We present results of tests of the evolution of small ``fluid elements'' in cosmological N--body simulations, to examine the validity of their treatment as particles. We find that even very small elements typically collapse along one axis while expanding along another, often to twice or more their initial comoving diameter. This represents a possible problem for high--resolution uses of such simulations.

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