Speaker
Dr
Armando Bernui
(Observatorio Nacional, Brazil)
Description
We show different forms to calculate the sound horizon scale at baryon
drag epoch, $r_{drag}$, a physical parameter considered a cosmological
standard ruler. This important parameter supports recent studies of the
large-scale structure of the Universe, including the dynamics of its evolution.
For this, one of the aims of current astronomical surveys is to know this
parameter with high precision. Here we make explicit the way this parameter
is calculated in the literature using cosmological parameters and assuming
LCDM cosmological model hypotheses. Finally, we show how it can be calculated
using data measured within a weakly cosmological-dependent approach.
Primary author
Dr
Edilson de Carvalho
(Universidade do Estado do Amazonas, Brazil)
Co-author
Dr
Armando Bernui
(Observatorio Nacional, Brazil)
