Effects of the size of cosmological N-Body simulations on physical quantities - III: Skewness

Details Effects of the size of cosmological N-Body simulations on physical quantities - III: Skewness Effects of the size of cosmological N-Body simulations on physical quantities - III: Skewness

2008-04-08

arxiv.org/abs/0804.1197v3

Mon.Not.Roy.Astron.Soc.395:918,2008

Astronomy and Astrophysics

Astrophysics

14 pages, 8 figures. Accepted for publication in the MNRAS

Scientific paper

10.1111/j.1365-2966.2009.14592.x

N-Body simulations are an important tool in the study of formation of large scale structures. Much of the progress in understanding the physics of galaxy clustering and comparison with observations would not have been possible without N-Body simulations. Given the importance of this tool, it is essential to understand its limitations as ignoring these can easily lead to interesting but unreliable results. In this paper we study the limitations due to the finite size of the simulation volume. In an earlier work we proposed a formalism for estimating the effects of a finite box-size on physical quantities and applied it to estimate the effect on the amplitude of clustering, mass function. Here, we extend the same analysis and estimate the effect on skewness and kurtosis in the perturbative regime. We also test the analytical predictions from the earlier work as well as those presented in this paper. We find good agreement between the analytical models and simulations for the two point correlation function and skewness. We also discuss the effect of a finite box size on relative velocity statistics and find the effects for these quantities scale in a manner that retains the dependence on the averaged correlation function.

Affiliated with

Also associated with

No associations

Rating

Effects of the size of cosmological N-Body simulations on physical quantities - III: Skewness does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Effects of the size of cosmological N-Body simulations on physical quantities - III: Skewness, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of the size of cosmological N-Body simulations on physical quantities - III: Skewness will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-540022