Discreteness Effects in ΛCDM Simulations: A Wavelet‐Statistical View
نویسندگان
چکیده
منابع مشابه
Discreteness effects in cosmological N-body simulations
An estimate of the convergence radius of a simulated CDM halo is obtained under the assumption that the peak phase-space density in the system is set by discreteness effects that operate prior to relaxation. The predicted convergence radii are approximately a factor 2 larger than those estimated for numerical convergence studies. A toy model is used to study the formation of sheets of the cosmi...
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The effects of particle discreteness in N -body simulations of Lambda Cold Dark Matter (ΛCDM) are still an intensively debated issue. In this paper we explore such effects, taking into account the scatter caused by the randomness of the initial conditions, and focusing on the statistical properties of the cosmological density field. For this purpose, we run large sets of ΛCDM simulations and an...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2008
ISSN: 0004-637X,1538-4357
DOI: 10.1086/591236