MG14 - Talk detail

Back to previous page

 Participant

Institution

Session

Accepted

Yes

Order

Time

Talk

Title

Abstract

We discuss a simplest model of modulation of the 3D Gaussian field in $k$-space by a non-uniformly oscillating function $f_1 (k)$, which imitates the baryon acoustic oscillations (BAO), and a model function $f_2 (k)$, reproducing the smoothed power spectrum of the galaxy clustering. This model is applied to statistical simulations of radial (1D-) distributions of cosmological objects, that allows to bring out a relation between quasi-periodical components characteristic for radial distributions of cosmological objects and the BAO phenomenon. It is shown that the radial distributions built from different centres in comoving space include quasi-periodical components with rather high probability depending on a signal-to-noise $S/N$ ratio. The averaging of a number of 1D-correlation functions over centres of radial distributions leads to the mean 1D-correlation function, which is qualitatively consistent with the standard 3D-correlation function. Both the functions are characterized by a single acoustic peaks at a scale of $\sim 100$~h$^{-1}$~Mpc. We apply similar 1D- statistical procedures to the sample of spectroscopic redshifts of the brightest cluster galaxies (and show that the results turn out to be consistent with those of our model simulations.

Pdf file

Back to previous page