Quasi-periodicities in radial distributions of matter at cosmological distances and baryonic acoustic oscillations

A. D. Kaminker, A. I. Ryabinkov

Ioffe Institute, Politekhnicheskaya 26, 194021, Saint Petersburg, Russia

On the base of a simplest model of quasi-periodical modulation of the Gaussian field in k-space we perform a set of simulations to bring out a relation between the large-scale baryonic acoustic oscillations (BAOs) registered in 3D-power spectra (Fourier space) of matter perturbations and quasi-periodical components characteristic for radial (along line-of-sight) distributions of cosmological objects in configuration (comoving) space. Properties of the radial (1D-) distributions built from different central points are specially investigated. We apply suggested approach to a sample of spectroscopic redshifts z of the brightest cluster galaxies (BCGs) and show that results turn out to be quite consistent with the results of the simulations.


[Back to Seminar Programme] [Seminar Home Page] [Department of Theoretical Astrophysics] [Ioffe Institute]

Page created on October 20, 2014.