DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Model-independent constraints on Ωm and H ( z ) from the link between geometry and growth

Journal Article · · Monthly Notices of the Royal Astronomical Society

ABSTRACT We constrain the expansion history of the Universe and the cosmological matter density fraction in a model-independent way by exclusively making use of the relationship between background and perturbations under a minimal set of assumptions. We do so by employing a Gaussian process to model the expansion history of the Universe from present time to the recombination era. The expansion history and the cosmological matter density are then constrained using recent measurements from cosmic chronometers, Type-Ia supernovae, baryon acoustic oscillations, and redshift-space distortion data. Our results show that the evolution in the reconstructed expansion history is compatible with the Planck 2018 prediction at all redshifts. The current data considered in this study can constrain a Gaussian process on H(z) to an average $$9.4 {{\ \rm per\ cent}}$$ precision across redshift. We find Ωm = 0.224 ± 0.066, lower but statistically compatible with the Planck 2018 cosmology. Finally, the combination of future DESI measurements with the CMB measurement considered in this work holds the promise of $$8 {{\ \rm per\ cent}}$$ average constraints on a model-independent expansion history as well as a five-fold tighter Ωm constraint using the methodology developed in this work.

Research Organization:
US Department of Energy (USDOE), Washington, DC (United States). Office of Science, Sloan Digital Sky Survey (SDSS)
Sponsoring Organization:
USDOE
OSTI ID:
1856607
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 2 Vol. 512; ISSN 0035-8711
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (62)

A buyer’s guide to the Hubble constant journal December 2021
Quantifying the S 8 tension with the Redshift Space Distortion data set journal January 2021
Array programming with NumPy journal September 2020
SciPy 1.0: fundamental algorithms for scientific computing in Python journal February 2020
Planck 2018 results: VI. Cosmological parameters journal September 2020
KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints journal February 2021
KiDS-1000 cosmology: Cosmic shear constraints and comparison between two point statistics journal January 2021
Geometry versus growth: Internal consistency of the flat ΛCDM model with KiDS-1000 journal October 2021
Mass downsizing and “top-down” assembly of early-type galaxies journal June 2006
Nucleosynthesis in Supernovae. journal July 1960
Early Supernova Luminosity journal August 1969
Primeval Adiabatic Perturbation in an Expanding Universe journal November 1970
The Reddening-Free Decline Rate Versus Luminosity Relationship for Type [CLC]Ia[/CLC] Supernovae journal October 1999
Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant journal May 2001
Constraining Cosmological Parameters Based on Relative Galaxy Ages journal July 2002
FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: COSMOLOGICAL INTERPRETATION journal February 2009
Reconstruction of dark energy and expansion dynamics using Gaussian processes journal June 2012
DESI and other Dark Energy experiments in the era of neutrino mass measurements journal May 2014
H 0 from cosmic chronometers and Type Ia supernovae, with Gaussian Processes and the novel Weighted Polynomial Regression method journal April 2018
Reconstruction of the Dark Energy equation of state from latest data: the impact of theoretical priors journal July 2019
Genetic algorithms and the analysis of SnIa data journal February 2011
Clustering in real space and in redshift space journal July 1987
The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: BAO and RSD measurements from anisotropic clustering analysis of the quasar sample in configuration space between redshift 0.8 and 2.2 journal October 2020
Galaxy clustering in the DESI Legacy Survey and its imprint on the CMB journal December 2020
Testing the effect of H 0 on f σ8 tension using a Gaussian process method journal December 2020
Measurement on the cosmic curvature using the Gaussian process method journal May 2021
Peculiar-velocity cosmology with Types Ia and II supernovae journal May 2021
To H 0 or not to H 0? journal June 2021
Arbitrating the S 8 discrepancy with growth rate measurements from redshift-space distortions journal June 2021
Cosmological parameters, shear maps and power spectra from CFHTLenS using Bayesian hierarchical inference journal December 2016
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: anisotropic galaxy clustering in Fourier space journal December 2016
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample journal March 2017
Model-independent cosmological constraints from growth and expansion journal February 2018
Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z ∼ 2 journal April 2015
Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological implications from two decades of spectroscopic surveys at the Apache Point Observatory journal April 2021
Reconstructing quintessence journal May 2021
Dark Energy Survey Year 3 results: Cosmological constraints from galaxy clustering and weak lensing journal January 2022
Gaussian process cosmography journal June 2012
A fast route to modified gravitational growth journal January 2014
Model independent inference of the expansion history and implications for the growth of structure journal June 2018
Falsifying Λ CDM : Model-independent tests of the concordance model with eBOSS DR14Q and Pantheon journal October 2018
Phenomenology of large scale structure in scalar-tensor theories: Joint prior covariance of w DE , Σ , and μ in Horndeski theories journal January 2019
The WiggleZ Dark Energy Survey: survey design and first data release journal January 2010
Dynamical masses of early-type galaxies: a comparison to lensing results and implications for the stellar initial mass function and the distribution of dark matter: Luminous and dark matter in early-type galaxies journal June 2011
The WiggleZ Dark Energy Survey: joint measurements of the expansion and growth history at z < 1 : WiggleZ Survey: expansion history journal July 2012
Gaussian processes reconstruction of dark energy from observational data journal June 2018
Measurements of $$H_0$$ and reconstruction of the dark energy properties from a model-independent joint analysis journal February 2021
Cosmic Microwave Background Anisotropies journal September 2002
Inference from Iterative Simulation Using Multiple Sequences journal November 1992
The Prior Can Often Only Be Understood in the Context of the Likelihood journal October 2017
The Sdss-Iv Extended Baryon Oscillation Spectroscopic Survey: Overview and Early data journal February 2016
Cosmicflows-3 journal August 2016
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe journal June 2017
The Complete Light-curve Sample of Spectroscopically Confirmed SNe Ia from Pan-STARRS1 and Cosmological Constraints from the Combined Pantheon Sample journal May 2018
Setting the Stage for Cosmic Chronometers. I. Assessing the Impact of Young Stellar Populations on Hubble Parameter Measurements journal November 2018
Model-independent Reconstruction of f ( T ) Gravity from Gaussian Processes journal January 2020
Calibration of the Tip of the Red Giant Branch journal March 2020
Setting the Stage for Cosmic Chronometers. II. Impact of Stellar Population Synthesis Models Systematics and Full Covariance Matrix journal July 2020
Eppur è piatto? The Cosmic Chronometers Take on Spatial Curvature and Cosmic Concordance journal February 2021
The Megamaser Cosmology Project. XIII. Combined Hubble Constant Constraints journal February 2020
Determining Model-independent H 0 and Consistency Tests journal May 2020
Cosmic Distances Calibrated to 1% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with ΛCDM journal February 2021