# Model-independent cosmological constraints from growth and expansion

@article{LHuillier2017ModelindependentCC,
title={Model-independent cosmological constraints from growth and expansion},
author={Benjamin L’Huillier and Arman Shafieloo and Hyungjin Kim Kasi and Ust and Waterloo},
journal={Monthly Notices of the Royal Astronomical Society},
year={2017},
volume={476},
pages={3263-3268}
}
• Published 13 December 2017
• Physics
• Monthly Notices of the Royal Astronomical Society
Reconstructing the expansion history of the Universe from type Ia supernovae data, we fit the growth rate measurements and put model-independent constraints on some key cosmological parameters, namely, $\Omega_\mathrm{m},\gamma$, and $\sigma_8$. The constraints are consistent with those from the concordance model within the framework of general relativity, but the current quality of the data is not sufficient to rule out modified gravity models. Adding the condition that dark energy density…
30 Citations

## Figures from this paper

• Physics
• 2019
Using redshift space distortion data, we perform model-independent reconstructions of the growth history of matter inhomogeneity in the expanding Universe using two methods: crossing statistics and
• Physics
The Astrophysical Journal
• 2020
We reconstruct the expansion history of the universe using type Ia supernovae (SN Ia) in a manner independent of any cosmological model assumptions. To do so, we implement a nonparametric iterative
• Physics
Astronomy & Astrophysics
• 2019
Context. The cosmological concordance model (ΛCDM) is the current standard model in cosmology thanks to its ability to reproduce the observations. The first observational evidence for this model
• Physics
The Astrophysical Journal
• 2022
The evolution of the dark energy (DE) density is a crucial quantity for understanding the nature of DE. Often, the quantity is described by the so-called equation of state; that is, the ratio of the
• Physics
Physical Review D
• 2021
In the ΛCDM model, cosmological observations from the late and recent universe reveal a puzzling ∼ 4.5σ tension in the current rate of universe expansion. In addition to the various scenarios
• Physics
Journal of Cosmology and Astroparticle Physics
• 2019
We present a systematic analysis of the cosmological constraints from the “Pantheon Sample” of 1048 Type Ia Supernovae (SNe Ia) in the redshift range 0.01<z<2.3 compiled by Scolnic et al. (2018).
• Physics
Physical Review D
• 2022
In the context of modiﬁed gravity, at linear level, the growth of structure in the Universe will be affected by modiﬁcations to the Poisson equation and by the background expansion rate of the
• Physics
• 2018
The $\Lambda$CDM model is the current standard model in cosmology thanks to its ability to reproduce the observations. Its first observational evidence appeared from the type Ia supernovae (SNIa)
• Mathematics
• 2017
We test both the FLRW geometry and $\Lambda$CDM cosmology in a model independent way by reconstructing the Hubble function $H(z)$, the comoving distance $D(z)$ and the growth of structure
• Physics
Physical Review D
• 2018
We combine model-independent reconstructions of the expansion history from the latest Pantheon supernovae distance modulus compilation and measurements from baryon acoustic oscillation to test some

## References

SHOWING 1-10 OF 43 REFERENCES

• Physics
• 2013
Berkeley Center for Cosmological Physics, University of California, Berkeley, CA 94720, USA(Dated: January 9, 2014)We use Gaussian Processes to map the expansion history of the universe in a model
• Physics
• 2015
We perform parametric tests of the consistency of the standard $w$CDM model in the framework of general relativity by carefully separating information between the geometry and growth of structure. We
We re-examine the growth index of the concordance Λ cosmology in the light of the latest 6dF and WiggleZ data. In particular, we investigate five different models for the growth index γ, by comparing
We have improved upon the method of smoothing supernovae data to reconstruct the expansion history of the universe, h(z), using two latest datasets, Gold and SNLS. The reconstruction process does not
• Physics
The Astrophysical Journal
• 2018
We perform Markov chain Monte Carlo analyses to put constraints on the nonflat ϕCDM inflation model using Planck 2015 cosmic microwave background (CMB) anisotropy data and baryon acoustic oscillation
• Physics
• 2005
We propose a non-parametric method of smoothing supernova data over redshift using a Gaussian kernel in order to reconstruct important cosmological quantities including H(z) and w(z) in a
• Physics
• 2018
We use baryon acoustic oscillation and redshift space distortion from the completed Baryon Oscillation Spectroscopic Survey, corresponding to data release 12 of the Sloan Digital Sky Survey, combined
• Physics
• 2016
Recent analyses in the literature suggest that the concordance $\Lambda$CDM model with rigid cosmological term, $\Lambda=$const., may not be the best description of the cosmic acceleration. The class
• Physics
• 2011
We present precise measurements of the growth rate of cosmic structure for the redshift range 0.1 < z < 0.9, using redshift-space distortions in the galaxy power spectrum of the WiggleZ Dark Energy
Author(s): Linder, Eric V. | Abstract: The cosmic expansion history tests the dynamics of the global evolution of the universe and its energy density contents, while the cosmic growth history tests