Improving reconstruction of the baryon acoustic peak : the effect of local environment

Abstract

Precise measurements of the baryon acoustic oscillation (BAO) scale as a standard ruler in the clustering pattern of large-scale structure is a central goal of current and future galaxy surveys. The BAO peak may be sharpened using the technique of density-field reconstruction, in which the bulk displacements of galaxies are estimated using a Zel'dovitch approximation. We use numerical simulations to demonstrate how the accuracy of this approximation depends strongly on local environment, and how this information may be used to construct an improved BAO measurement through environmental re-weighting and using higher-order perturbation theory. We outline further applications of the displacement field for testing cosmological models.

13 pages, 14 figures

References in corpus (13)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak
• Nonlinear Evolution of Baryon Acoustic Oscillations
• The detectability of baryonic acoustic oscillations in future galaxy surveys
• `Eppur Si Muove': On The Motion of the Acoustic Peak in the Correlation Function
• Non-linear structure formation and the acoustic scale
• Reconstructing Baryon Oscillations: A Lagrangian Theory Perspective
• Reconstruction within the Zeldovich approximation
• Reconstruction in Fourier space
• Galaxy Bias and its Effects on the Baryon Acoustic Oscillations Measurements
• The galaxy power spectrum: precision cosmology from large scale structure?
• Efficient Reconstruction of Linear Baryon Acoustic Oscillations in Galaxy Surveys
• Matter Power Spectrum Covariance Matrix from the DEUS-PUR ΛCDM simulations: Mass Resolution and non-Gaussian Errors

Cited by in corpus (24)

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• Signatures of the Primordial Universe from Its Emptiness: Measurement of Baryon Acoustic Oscillations from Minima of the Density Field
• Information Content of Higher-Order Galaxy Correlation Functions
• Testing the imprint of non-standard cosmologies on void profiles using Monte Carlo random walks
• A Zeldovich reconstruction method for measuring redshift space distortions using cosmic voids
• The Impact of Wrong Assumptions in BAO Reconstruction
• Halo nonlinear reconstruction
• Reconstructing Cosmological Initial Conditions from Late-Time Structure with Convolutional Neural Networks
• BAO reconstruction: a swift numerical action method for massive spectroscopic surveys
• An improved model of redshift-space distortions around voids: application to quintessence dark energy
• Density-dependent clustering: I. Pulling back the curtains on motions of the BAO peak
• Improving baryon acoustic oscillation measurement with the combination of cosmic voids and galaxies
• Phenomenology of BAO evolution from Lagrangian to Eulerian Space
• Biased tracer reconstruction with halo mass information
• Performance study of Lagrangian methods: reconstruction of large scale peculiar velocities and baryonic acoustic oscillations
• Measuring the BAO peak position with different galaxy selections
• Non-perturbative halo clustering from cosmological density peaks
• Choose to smooth: Gaussian streaming with the truncated Zel'dovich approximation
• The environmental dependence of the baryon acoustic peak in the Baryon Oscillation Spectroscopic Survey CMASS sample
• Modelling the environmental dependence of the growth rate
• Baryon Acoustic Oscillations analyses with Density-Split Statistics