Improving baryon acoustic oscillation measurement with the combination of cosmic voids and galaxies

Abstract

We develop a methodology to optimise the measurement of Baryon Acoustic Oscillation (BAO) from a given galaxy sample. In our previous work, we demonstrated that one can measure BAO from tracers in under-dense regions (voids). In this study, we combine the over-dense and under-dense tracers (galaxies & voids) to obtain better constraints on the BAO scale. To this end, we modify the de-wiggled BAO model with an additional parameter to describe both the BAO peak and the underlying exclusion pattern of void 2PCFs. We show that after applying BAO reconstruction to galaxies, the BAO peak scale of both galaxies and voids are unbiased using the modified model. Furthermore, we use a new 2PCF estimator for a multi-tracer analysis with galaxies and voids. In simulations, the joint sample improves by about 10% the constraint for the post-reconstruction BAO peak position compared to the result from galaxies alone, which is equivalent to an enlargement of the survey volume by 20%. Applying this method to the BOSS DR12 data, we have an 18% improvement for the low-z sample (0.2<z<0.5), but a worse constraint for the high-z sample (0.5<z<0.75), which is consistent with statistical fluctuations for the current survey volume. Future larger samples will give more robust improvements due to less statistical fluctuations.

arXiv comment21 pages, 22 figures

References in corpus (77)

• Efficient Computation of CMB anisotropies in closed FRW models
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics
• Baryonic Features in the Matter Transfer Function
• The 2dF Galaxy Redshift Survey: Power-spectrum analysis of the final dataset and cosmological implications
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• Multimodal nested sampling: an efficient and robust alternative to MCMC methods for astronomical data analysis
• Importance Nested Sampling and the MultiNest Algorithm
• MultiDark simulations: the story of dark matter halo concentrations and density profiles
• Power Spectrum Analysis of Three-Dimensional Redshift Surveys
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 9 Spectroscopic Galaxy Sample
• Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
• A 2% Distance to z=0.35 by Reconstructing Baryon Acoustic Oscillations - I : Methods and Application to the Sloan Digital Sky Survey
• Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars
• Probing dark energy using baryonic oscillations in the galaxy power spectrum as a cosmological ruler
• Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak
• A hierarchy of voids: Much ado about nothing
• The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: First measurement of Baryon Acoustic Oscillations between redshift 0.8 and 2.2
• Baryon Acoustic Oscillation Intensity Mapping as a Test of Dark Energy
• A Nested Sampling Algorithm for Cosmological Model Selection
• The WiggleZ Dark Energy Survey: Improved Distance Measurements to z = 1 with Reconstruction of the Baryonic Acoustic Feature
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: mock galaxy catalogues for the BOSS Final Data Release
• Bayesian physical reconstruction of initial conditions from large scale structure surveys
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Analysis of potential systematics
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Observational systematics and baryon acoustic oscillations in the correlation function
• The Clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Including covariance matrix errors
• A comparison of estimators for the two-point correlation function
• Wiener Reconstruction of The Large Scale Structure
• The Aspen--Amsterdam Void Finder Comparison Project
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Modeling the clustering and halo occupation distribution of BOSS-CMASS galaxies in the Final Data Release
• Baryonic acoustic oscillations in simulated galaxy redshift surveys
• Modelling Baryon Acoustic Oscillations with Perturbation Theory and Stochastic Halo Biasing
• Voids in the Large-Scale Structure
• Reconstructing Baryon Oscillations: A Lagrangian Theory Perspective
• A 2% Distance to z=0.35 by Reconstructing Baryon Acoustic Oscillations - II: Fitting Techniques
• Bayesian reconstruction of the cosmological large-scale structure: methodology, inverse algorithms and numerical optimization
• The clustering of galaxies at z~0.5 in the SDSS-III Data Release 9 BOSS-CMASS sample: a test for the LCDM cosmology
• Cosmic Voids: structure, dynamics and galaxies
• Cosmology with Void-Galaxy Correlations
• Reconstructing baryon oscillations
• The Initial Conditions of the Universe from Constrained Simulations
• Optimal Constraints on Local Primordial Non-Gaussianity from the Two-Point Statistics of Large-Scale Structure
• Cosmological Structure Formation with Augmented Lagrangian Perturbation Theory
• Iterative initial condition reconstruction
• Eulerian BAO Reconstructions and N-Point Statistics
• Why multi-tracer surveys beat cosmic variance
• Reconstructing the Initial Density Field of the Local Universe: Method and Test with Mock Catalogs
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: theoretical systematics and Baryon Acoustic Oscillations in the galaxy correlation function
• nIFTy Cosmology: Galaxy/halo mock catalogue comparison project on clustering statistics
• Large-Scale Clustering of Cosmic Voids
• Constraining the halo bispectrum in real and redshift space from perturbation theory and non-linear stochastic bias
• Linear redshift space distortions for cosmic voids based on galaxies in redshift space
• Signatures of the Primordial Universe from Its Emptiness: Measurement of Baryon Acoustic Oscillations from Minima of the Density Field
• A WISE measurement of the ISW effect
• Towards an Optimal Reconstruction of Baryon Oscillations
• Reconstruction of cosmological density and velocity fields in the Lagrangian Zel'dovich Approximation
• Comparing estimators of the galaxy correlation function
• Efficient Reconstruction of Linear Baryon Acoustic Oscillations in Galaxy Surveys
• An iterative reconstruction of cosmological initial density fields
• Cosmology without cosmic variance
• The life and death of cosmic voids
• Measuring Baryon Acoustic Oscillations from the clustering of voids
• Optimal Weighting in Galaxy Surveys: Application to Redshift-Space Distortions
• An optimized correlation function estimator for galaxy surveys
• DIVE in the cosmic web: voids with Delaunay Triangulation from discrete matter tracer distributions
• Reducing sample variance: halo biasing, non-linearity and stochasticity
• Isobaric Reconstruction of the Baryonic Acoustic Oscillation
• Voids in cosmological simulations over cosmic time
• BAO reconstruction: a swift numerical action method for massive spectroscopic surveys
• Improving reconstruction of the baryon acoustic peak : the effect of local environment
• Density-dependent clustering: I. Pulling back the curtains on motions of the BAO peak
• Removing BAO-peak Shifts with Local Density Transforms
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Effect of smoothing of density field on reconstruction and anisotropic BAO analysis
• Bayesian redshift-space distortions correction from galaxy redshift surveys
• The Monge-Ampère-Kantorovich approach to reconstruction in cosmology
• Structure in the 3D Galaxy Distribution: II. Voids and Watersheds of Local Maxima and Minima

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• Infrared Resummation for Biased Tracers in Redshift Space
• UNIT project: Universe $N$-body simulations for the Investigation of Theoretical models from galaxy surveys
• Redshift-space distortions with split densities
• The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological implications from multi-tracer BAO analysis with galaxies and voids
• Updated void catalogs of the SDSS DR7 main sample
• The cosmic web connection to the dark matter halo distribution through gravity
• On the Merger Rate of Primordial Black Holes in Cosmic Voids
• Higher Order Hamiltonian Monte Carlo Sampling for Cosmological Large-Scale Structure Analysis
• Cosmic void exclusion models and their impact on the distance scale measurements from large scale structure
• A Comparison of Void-Finding Algorithms using Crossing Numbers
• Cosmic Void Baryon Acoustic Oscillation Measurement: Evaluation of Sensitivity to Selection Effects
• The environmental dependence of the baryon acoustic peak in the Baryon Oscillation Spectroscopic Survey CMASS sample
• Mixing Bispectrum Multipoles Under Geometric Distortions
• Baryon Acoustic Oscillations analyses with Density-Split Statistics
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