Precise Measurement of the Radial Baryon Acoustic Oscillation Scales in Galaxy Redshift Surveys

Abstract

In this paper we present a new method to extract cosmological parameters using the radial scale of the Baryon Acoustic Oscillations as a standard ruler in deep galaxy surveys. The method consists in an empirical parametrization of the radial 2-point correlation function, which provides a robust and precise extraction of the sound horizon scale. Moreover, it uses data from galaxy surveys in a manner that is fully cosmology independent and therefore, unbiased. A study of the main systematic errors and the validation of the method in cosmological simulations are also presented, showing that the measurement is limited only by cosmic variance. We then study the full information contained in the Baryon Acoustic Oscillations, obtaining that the combination of the radial and angular determinations of this scale is a very sensitive probe of cosmological parameters, able to set strong constraints on the dark energy properties, even without combining it with any other probe.

13 pages, 15 figures

References in corpus (10)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• Measuring the Baryon Acoustic Oscillation scale using the SDSS and 2dFGRS
• Measuring D_A and H at z=0.35 from the SDSS DR7 LRGs using baryon acoustic oscillations
• Large-Scale Anisotropic Correlation Function of SDSS Luminous Red Galaxies
• The onion universe: all sky lightcone simulations in spherical shells
• Tracing The Sound Horizon Scale With Photometric Redshift Surveys
• Scale Dependent Galaxy Bias in the SDSS as a function of Luminosity and Colour
• Power spectrum of the SDSS luminous red galaxies: constraints on cosmological parameters
• The Dark Energy Spectrometer (DESpec): A Multi-Fiber Spectroscopic Upgrade of the Dark Energy Camera and Survey for the Blanco Telescope

Cited by in corpus (18)

• Late-time cosmology with 21cm intensity mapping experiments
• Cosmology with the Large Synoptic Survey Telescope: an Overview
• Full-Shape Galaxy Power Spectra and the Curvature Tension
• Novel null tests for the spatial curvature and homogeneity of the Universe and their machine learning reconstructions
• Cosmic distance inference from purely geometric BAO methods: Linear Point standard ruler and Correlation Function Model Fitting
• The Linear Point: A cleaner cosmological standard ruler
• Cosmological forecasts for future galaxy surveys with the linear point standard ruler: Toward consistent BAO analyses far from a fiducial cosmology
• Quantifying the accuracy of the Alcock-Paczynski scaling of baryon acoustic oscillation measurements
• Baryon acoustic oscillations in thin redshift shells from BOSS DR12 and eBOSS DR16 galaxies
• Baryon acoustic oscillation methods for generic curvature: Application to the SDSS-III Baryon Oscillation Spectroscopic Survey
• A first model-independent radial BAO constraint from the final BOSS sample
• The Alcock Paczynski test with Baryon Acoustic Oscillations: systematic effects for future surveys
• On the origin of the BAOtr-DESI tension
• Angular Correlation Function from sample covariance with BOSS and eBOSS LRG
• The oscillating behavior of the pair correlation function in galaxies
• Baryon Acoustic Oscillations from galaxy surveys
• Influence of photometric galaxies redshift distribution in BAO estimation
• Baryon Acoustic Oscillations in tomographic Angular Density and Redshift Fluctuations