Using Pantheon and DES supernova, baryon acoustic oscillation, and Hubble parameter data to constrain the Hubble constant, dark energy dynamics, and spatial curvature

Cao, Shulei; Ryan, Joseph; Ratra, Bharat

doi:10.48550/arxiv.2101.08817

Cited by 10 publications

(19 citation statements)

References 81 publications

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“…[439], Planck 2015 + BAO gives H 0 = 67.93 +0. 53 −0.63 km s −1 Mpc −1 at 68% CL for long-lived decaying cold dark matter, in disagreement with R20 at more than 3.8σ, while H 0 = 68.37 +0.61 −0.89 km s −1 Mpc −1 at 68% CL for short-lived decaying cold dark matter, in disagreement with R20 at 3.5σ. An update is presented in Ref.…”

Section: Decaying Dark Mattermentioning

confidence: 49%

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In the Realm of the Hubble tension $-$ a Review of Solutions

Di Valentino,

Mena,

Pan

et al. 2021

Preprint

178

252

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The simplest ΛCDM model provides a good fit to a large span of cosmological data but harbors large areas of phenomenology and ignorance. With the improvement of the number and the accuracy of observations, discrepancies among key cosmological parameters of the model have emerged. The most statistically significant tension is the 4σ to 6σ disagreement between predictions of the Hubble constant, H 0 , made by the early time probes in concert with the "vanilla" ΛCDM Cosmological model, and a number of late time, model-independent determinations of H 0 from local measurements of distances and redshifts. The high precision and consistency of the data at both ends present strong challenges to the possible solution space and demands a hypothesis with enough rigor to explain multiple observations-whether these invoke new physics, unexpected large-scale structures or multiple, unrelated errors. A thorough review of the problem including a discussion of recent Hubble constant estimates and a summary of the proposed theoretical solutions is presented here. We include more than 850 references, indicating that the interest in this area has grown considerably just during the last few years. We classify the many proposals to resolve the tension in these categories: Early Dark Energy, Late Dark Energy, Dark energy models with 6 degrees of freedom and their extensions, Models with extra relativistic degrees of freedom, Models with Extra Interactions, Unified cosmologies, Modified gravity, Inflationary models, Modified recombination history, Physics of the critical Phenomena, and Alternative proposals. Some are formally successful, improving the fit to the data in light of their additional degrees of freedom, restoring agreement within 1 − 2σ between Planck 2018, using the Cosmic Microwave Background power spectra data, Baryon Acoustic Oscillations, Pantheon SN data, and R20, the latest SH0ES Team [2] measurement of the Hubble constant (H 0 = 73.2 ± 1.3 km s −1 Mpc −1 at 68% confidence level). However, there are many more unsuccessful models which leave the discrepancy well above the 3σ disagreement level. In many cases, reduced tension comes not simply from a change in the value of H 0 but also due to an increase in its uncertainty due to degeneracy with additional physics, complicating the picture and pointing to the need for additional probes. While no specific proposal makes a strong case for being highly likely or far better than all others, solutions involving early or dynamical dark energy, neutrino interactions, interacting cosmologies, primordial magnetic fields, and modified gravity provide the best options until a better alternative comes along.

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Section: Decaying Dark Mattermentioning

confidence: 49%

“…Considering Pantheon SNIa apparent magnitude + DES-3yr binned SNIa apparent magnitude + H(z) + BAO in Ref. [53] the authors find H 0 = 68.8 ± 1.8 km s −1 Mpc −1 at 68% CL. In Ref.…”

Section: Earlymentioning

confidence: 97%

In the Realm of the Hubble tension $-$ a Review of Solutions

Di Valentino,

Mena,

Pan

et al. 2021

Preprint

178

252

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“…Massive, early, passively-evolving galaxies have been found to be very good tracers in this sense (see e.g. Cimatti et al 2004;Thomas et al 2010;Moresco 2015;Moresco et al 2018Moresco et al , 2020, for important works in this direction), and have been used extensively over the past two decades to measure H(z) up to z ≈ 2 (see e.g. Jimenez et al 2003;Simon et al 2005;Stern et al 2010;Moresco et al 2012;Moresco 2015;Moresco et al 2016;Ratsimbazafy et al 2017, whose measurements we use).…”

Section: Methodsmentioning

confidence: 99%

Non-parametric spatial curvature inference using late-universe cosmological probes

Dhawan,

Alsing,

Vagnozzi

2021

Preprint

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Inferring high-fidelity constraints on the spatial curvature parameter, Ω K , under as few assumptions as possible, is of fundamental importance in cosmology. We propose a method to non-parametrically infer Ω K from late-Universe probes alone. Using Gaussian Processes (GP) to reconstruct the expansion history, we combine Cosmic Chronometers (CC) and Type Ia Supernovae (SNe Ia) data to infer constraints on curvature, marginalized over the expansion history, calibration of the CC and SNe Ia data, and the GP hyper-parameters. The obtained constraints on Ω K are free from parametric model assumptions for the expansion history, and are insensitive to the overall calibration of both the CC and SNe Ia data (being sensitive only to relative distances and expansion rates). Applying this method to Pantheon SNe Ia and the latest compilation of CCs, we find Ω K = −0.03 ± 0.26, consistent with spatial flatness at the O(10 −1 ) level, and independent of any early-Universe probes. Applying our methodology to future Baryon Acoustic Oscillations and SNe Ia data from upcoming Stage IV surveys, we forecast the ability to constrain Ω K at the O(10 −2 ) level.

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“…It also allow us to test the curvature at any single redshift as it has been reconstructed in several works, see for instance Refs. [1,15,[27][28][29][30][31][32][33][34]. Since the curvature parameter Ω k does not depend on redshift, we can differentiate this to obtain a relation that must always equal zero.…”

Section: Discussionmentioning

confidence: 99%

Complementary consistency test of the Copernican principle via Noether's theorem and machine learning forecasts

Arjona,

Nesseris

2021

Preprint

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Using Pantheon and DES supernova, baryon acoustic oscillation, and Hubble parameter data to constrain the Hubble constant, dark energy dynamics, and spatial curvature

Cited by 10 publications

References 81 publications

In the Realm of the Hubble tension $-$ a Review of Solutions

In the Realm of the Hubble tension $-$ a Review of Solutions

Non-parametric spatial curvature inference using late-universe cosmological probes

Complementary consistency test of the Copernican principle via Noether's theorem and machine learning forecasts

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