ShapeFit: extracting the power spectrum shape information in galaxy surveys beyond BAO and RSD

Abstract

In the standard (classic) approach, galaxy clustering measurements from spectroscopic surveys are compressed into baryon acoustic oscillations and redshift space distortions measurements, which in turn can be compared to cosmological models. Recent works have shown that avoiding this intermediate step and fitting directly the full power spectrum signal (full modelling) leads to much tighter constraints on cosmological parameters. Here we show where this extra information is coming from and extend the classic approach with one additional effective parameter, such that it captures, effectively, the same amount of information as the full modelling approach, but in a model-independent way. We validate this new method (ShapeFit) on mock catalogs, and compare its performance to the full modelling approach finding both to deliver equivalent results. The ShapeFit extension of the classic approach promotes the standard analyses at the level of full modelling ones in terms of information content, with the advantages of i) being more model independent; ii) offering an understanding of the origin of the extra cosmological information; iii) allowing a robust control on the impact of observational systematics.

arXiv comment60 pages, 19 figures, 5 Tables; v2 matches accepted version, new figures 7 and 9 and table 4, updated figures 1, 7 and 16

References in corpus (83)

• The Sloan Digital Sky Survey: Technical Summary
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• 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
• The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III
• The Cosmic Linear Anisotropy Solving System (CLASS) II: Approximation schemes
• Baryonic Features in the Matter Transfer Function
• SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way Galaxy, and Extra-Solar Planetary Systems
• The 2dF Galaxy Redshift Survey: Power-spectrum analysis of the final dataset and cosmological implications
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• The 3D power spectrum of galaxies from the SDSS
• The Cosmic Microwave Background Spectrum from the Full COBE/FIRAS Data Set
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• Small Scale Cosmological Perturbations: An Analytic Approach
• Power Spectrum Analysis of Three-Dimensional Redshift Surveys
• Euclid Definition Study Report
• Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
• The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the universe
• The Effective Field Theory of Cosmological Large Scale Structures
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Parameter Estimation Methodology
• Redshift-Space Distortions, Pairwise Velocities and Nonlinearities
• The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release
• Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak
• Cosmological Constraints from the Clustering of the Sloan Digital Sky Survey DR7 Luminous Red Galaxies
• Cosmic Background Anisotropies in CDM Cosmology
• The Cosmological Analysis of the SDSS/BOSS data from the Effective Field Theory of Large-Scale Structure
• Biasing and Hierarchical Statistics in Large-scale Structure
• On the Robustness of the Acoustic Scale in the Low-Redshift Clustering of Matter
• Cosmological Parameters from the BOSS Galaxy Power Spectrum
• Baryon Acoustic Oscillations in 2D: Modeling Redshift-space Power Spectrum from Perturbation Theory
• Clustering of dark matter tracers: generalizing bias for the coming era of precision LSS
• Reconstructing the history of structure formation using redshift distortions
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Anisotropic galaxy clustering in Fourier-space
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Testing gravity with redshift-space distortions using the power spectrum multipoles
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: mock galaxy catalogues for the BOSS Final Data Release
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the luminous red galaxy sample from the anisotropic power spectrum between redshifts 0.6 and 1.0
• Uncorrelated Modes of the Nonlinear Power Spectrum
• Gravity and Large-Scale Non-local Bias
• Evidence for Quadratic Tidal Tensor Bias from the Halo Bispectrum
• The DESI Experiment Part II: Instrument Design
• Accurate Estimators of Correlation Functions in Fourier Space
• The power spectrum and bispectrum of SDSS DR11 BOSS galaxies I: bias and gravity
• Non-linear perturbation theory extension of the Boltzmann code CLASS
• Combining Full-Shape and BAO Analyses of Galaxy Power Spectra: A 1.6% CMB-independent constraint on H0
• 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
• A Measurement of the Quadrupole Power Spectrum in the Clustering of the 2dF QSO Survey
• Understanding higher-order nonlocal halo bias at large scales by combining the power spectrum with the bispectrum
• Cosmology with massive neutrinos II: on the universality of the halo mass function and bias
• Cosmological parameters from CMB measurements and the final 2dFGRS power spectrum
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Large-scale Structure Catalogs for Cosmological Analysis
• Cosmology from large-scale structure: Constraining $\Lambda$CDM with BOSS
• Blinded challenge for precision cosmology with large-scale structure: results from effective field theory for the redshift-space galaxy power spectrum
• Efficient Cosmological Analysis of the SDSS/BOSS data from the Effective Field Theory of Large-Scale Structure
• Reconstructing Baryon Oscillations: A Lagrangian Theory Perspective
• Measuring line-of-sight dependent Fourier-space clustering using FFTs
• The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Large-scale Structure Catalogues and Measurement of the isotropic BAO between redshift 0.6 and 1.1 for the Emission Line Galaxy Sample
• Cosmological parameters from large scale structure - geometric versus shape information
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological constraints from the full shape of the clustering wedges
• On the EFT of Large Scale Structures in Redshift Space
• Rapid modelling of the redshift-space power spectrum multipoles for a masked density field
• Standard rulers, candles, and clocks from the low-redshift Universe
• Interpreting measurements of the anisotropic galaxy power spectrum
• Determining the Hubble Constant without the Sound Horizon: Measurements from Galaxy Surveys
• The 2-degree Field Lensing Survey: design and clustering measurements
• Arguments against using $h^{-1}\mathrm{Mpc}$ units in observational cosmology
• Integral constraints in spectroscopic surveys
• Bias due to neutrinos must not uncorrect'd go
• H0 tension or T0 tension?
• Theoretical uncertainty in baryon oscillations
• The Impact of the Fiducial Cosmology Assumption on BAO Cosmological Parameter Inference
• Unbiased clustering estimation in the presence of missing observations
• Robustness of baryon acoustic oscillation constraints for early-Universe modifications to $\Lambda$CDM
• Efficient Reconstruction of Linear Baryon Acoustic Oscillations in Galaxy Surveys
• Maximum Likelihood Estimates of the Two- and Three-Dimensional Power Spectra of the APM Galaxy Survey
• Galaxy bias from forward models: linear and second-order bias of IllustrisTNG galaxies
• Biases from neutrino bias: to worry or not to worry?
• Dark matter and halo bispectrum in redshift space: theory and applications
• Eulerian Perturbation Theory in Non-Flat Universes: Second-Order Approximation
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Pairwise-Inverse-Probability and Angular Correction for Fibre Collisions in Clustering Measurements
• Barry and the BAO Model Comparison
• The bias of weighted dark matter halos from peak theory
• Measuring equality horizon with the zero-crossing of the galaxy correlation function

Cited by in corpus (49)

• DESI 2024 VII: Cosmological Constraints from the Full-Shape Modeling of Clustering Measurements
• A non-linear solution to the $S_8$ tension?
• Cosmic chronometers to calibrate the ladders and measure the curvature of the Universe. A model-independent study
• Cosmology with the EFTofLSS and BOSS: dark energy constraints and a note on priors
• The state of the dark energy equation of state circa 2023
• DESI 2024 V: Full-Shape Galaxy Clustering from Galaxies and Quasars
• BAO+BBN revisited -- Growing the Hubble tension with a 0.7km/s/Mpc constraint
• Joint analysis of anisotropic power spectrum, bispectrum and trispectrum: application to N-body simulations
• A tale of two (or more) $h$'s
• Modified Gravity Constraints from the Full Shape Modeling of Clustering Measurements from DESI 2024
• Cosmological Constraint Precision of the Photometric and Spectroscopic Multi-probe Surveys of China Space Station Telescope (CSST)
• Determining the Hubble Constant without the Sound Horizon: Perspectives with Future Galaxy Surveys
• Fast computation of non-linear power spectrum in cosmologies with massive neutrinos
• The Bacco Simulation Project: Bacco Hybrid Lagrangian Bias Expansion Model in Redshift Space
• Beyond $\Lambda$CDM constraints from the full shape clustering measurements from BOSS and eBOSS
• Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
• Constraints on $S_8$ from a full-scale and full-shape analysis of redshift-space clustering and galaxy-galaxy lensing in BOSS
• A Parameter-Masked Mock Data Challenge for Beyond-Two-Point Galaxy Clustering Statistics
• Mitigation of DESI fiber assignment incompleteness effect on two-point clustering with small angular scale truncated estimators
• Semi-analytical covariance matrices for two-point correlation function for DESI 2024 data
• A comparison of template vs. direct model fitting for redshift-space distortions in BOSS
• Cosmological constraints on early dark energy from the full shape analysis of eBOSS DR16
• PT challenge: Validation of ShapeFit on large-volume, high-resolution mocks
• Compressing the cosmological information in one-dimensional correlations of the Lyman-$\alpha$ forest
• Analytical and EZmock covariance validation for the DESI 2024 results
• Extracting cosmological parameters from N-body simulations using machine learning techniques
• Cosmological forecasts for future galaxy surveys with the linear point standard ruler: Toward consistent BAO analyses far from a fiducial cosmology
• A comparison between Shapefit compression and Full-Modelling method with PyBird for DESI 2024 and beyond
• Compressed baryon acoustic oscillation analysis is robust to modified-gravity models
• Validating the Galaxy and Quasar Catalog-Level Blinding Scheme for the DESI 2024 analysis
• ELG Spectroscopic Systematics Analysis of the DESI Data Release 1
• Direct cosmological inference from three-dimensional correlations of the Lyman-$\alpha$ forest
• fkPT: Constraining scale-dependent modified gravity with the full-shape galaxy power spectrum
• A multitracer analysis for the eBOSS galaxy sample based on the effective field theory of large-scale structure
• Measurement of the matter-radiation equality scale using the extended Baryon Oscillation Spectroscopic Survey Quasar Sample
• BAO cosmology in non-spatially flat background geometry from BOSS+eBOSS and lessons for future surveys
• Improving precision and accuracy in cosmology with model-independent spectrum and bispectrum
• Model-Independent Measurement of the Matter-Radiation Equality Scale in DESI 2024
• GEO-FPT: a model of the galaxy bispectrum at mildly non-linear scales
• Can the sound horizon-free measurement of $H_0$ constrain early new physics?
• Faster cosmological analysis with power spectrum without simulations
• Model-independent constraints on clustering and growth of cosmic structures from BOSS DR12 galaxies in harmonic space
• How to optimally combine pre-reconstruction full shape and post-reconstruction BAO signals
• Improving cosmological constraints via galaxy intrinsic alignment in full-shape analysis
• New tests of dark sector interactions from the full-shape galaxy power spectrum
• The Impact of Spectroscopic Redshift Errors on Cosmological Measurements
• Cosmological implications of the full shape of anisotropic clustering measurements in BOSS and eBOSS
• Growth rate measurements from a joint analysis of the large-scale galaxy clustering in Fourier and configuration space
• Model-agnostic interpretation of 10 billion years of cosmic evolution traced by BOSS and eBOSS data