Confronting the damping of the baryon acoustic oscillations with observation

TL;DR

This paper examines how quasinonlinear clustering and redshift-space distortions damp baryon acoustic oscillations in the matter power spectrum, comparing models with observations to determine the best fit.

Contribution

It provides an analysis of damping effects on baryon acoustic oscillations using SDSS data, highlighting the importance of damping in modeling the power spectrum.

Findings

Models with damping better fit SDSS data

Damping effects are significant in BAO analysis

Supports inclusion of damping in cosmological models

Abstract

We investigate the damping of the baryon acoustic oscillations in the matter power spectrum due to the quasinonlinear clustering and redshift-space distortions by confronting the models with the observations of the Sloan Digital Sky Survey luminous red galaxy sample. The chi-squared test suggests that the observed power spectrum is better matched by models with the damping of the baryon acoustic oscillations rather than the ones without the damping.