Hints for possible low redshift oscillation around the best fit $\Lambda$CDM model in the expansion history of the Universe

Abstract

We search for possible deviations from the expectations of the concordance $\Lambda$CDM model in the expansion history of the Universe by analysing the Pantheon Type Ia Supernovae (SnIa) compilation along with its Monte Carlo simulations using redshift binning. We demonstrate that the redshift binned best fit $\Lambda$CDM matter density parameter ${\Omega }_{0m}$ and the best fit effective absolute magnitude $\mathcal{M}$ oscillate about their full dataset best fit values with considerably large amplitudes. Using the full covariance matrix of the data taking into account systematic and statistical errors, we show that at the redshifts below $z\approx 0.5$ such oscillations can only occur in 4 to 5$\%$ of the Monte Carlo simulations. While statistical fluctuations can be responsible for this apparent oscillation, we might have observed a hint for some behaviour beyond the expectations of the concordance model or a possible additional systematic in the data. If this apparent oscillation is not due to statistical or systematic effects, it could be due to either the presence of coherent inhomogeneities at low $z$ or due to oscillations of a quintessence scalar field.

arXiv comment6 pages, 3 figures, 2 tables. Version published in MNRAS. Added references and one extra figure that better illustrates the results of the analysis

References in corpus (74)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• The Cosmological Constant
• A Dynamical Solution to the Problem of a Small Cosmological Constant and Late-time Cosmic Acceleration
• Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples
• Dark Energy Survey Year 1 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• Early Dark Energy Can Resolve The Hubble Tension
• KiDS-450: Cosmological parameter constraints from tomographic weak gravitational lensing
• Supernova Constraints and Systematic Uncertainties from the First 3 Years of the Supernova Legacy Survey
• Cosmological implications of baryon acoustic oscillation (BAO) measurements
• Planck evidence for a closed Universe and a possible crisis for cosmology
• New physics in light of the $H_0$ tension: an alternative view
• Dynamical dark energy in light of the latest observations
• The Expansion of the Universe is Faster than Expected
• Testing General Relativity in Cosmology
• Non-minimal dark sector physics and cosmological tensions
• Early dark energy, the Hubble-parameter tension, and the string axiverse
• Curvature tension: evidence for a closed universe
• The Cosmological Constant Problem and Quintessence
• Dark energy two decades after: Observables, probes, consistency tests
• Cosmic anti-friction and accelerated expansion
• A Lower Growth Rate from Recent Redshift Space Distortion Measurements than Expected from Planck
• KiDS-450 + 2dFLenS: Cosmological parameter constraints from weak gravitational lensing tomography and overlapping redshift-space galaxy clustering
• Dynamics of interacting dark energy
• Cosmological Constraints from Galaxy Clusters in the 2500 square-degree SPT-SZ Survey
• Evolution of the $f{\sigma }_8$ tension with the Planck15/$\Lambda$CDM determination and implications for modified gravity theories
• Tension and constraints on modified gravity parametrizations of $G_{\text{eff}}(z)$ from growth rate and Planck data
• First evidence of running cosmic vacuum: challenging the concordance model
• KiDS-450: Testing extensions to the standard cosmological model
• KiDS-450: The tomographic weak lensing power spectrum and constraints on cosmological parameters
• Constraining Dark Energy Dynamics in Extended Parameter Space
• Interacting dark energy with time varying equation of state and the $H_0$ tension
• $H_0$ Tension, Phantom Dark Energy and Cosmological Parameter Degeneracies
• The $H_0$ tension in light of vacuum dynamics in the Universe
• Update on Coupled Dark Energy and the $H_0$ tension
• Observational constraints on one-parameter dynamical dark-energy parametrizations and the $H_0$ tension
• Rock 'n' Roll Solutions to the Hubble Tension
• Tensions in the dark: shedding light on Dark Matter-Dark Energy interactions
• LXCDM: a cosmon model solution to the cosmological coincidence problem?
• A larger value for $H_0$ by an evolving gravitational constant
• Using the tilted flat-$\Lambda$CDM and the untilted non-flat $\Lambda$CDM inflation models to measure cosmological parameters from a compilation of observational data
• GAIA Cepheid parallaxes and 'Local Hole' relieve $H_0$ tension
• Density perturbations for running vacuum: a successful approach to structure formation and to the ${\sigma }_8$-tension
• The extended ROSAT-ESO Flux Limited X-ray Galaxy Cluster Survey (REFLEX II) IV. X-ray Luminosity Function and First Constraints on Cosmological Parameters
• Search for sterile neutrinos in holographic dark energy cosmology: Reconciling Planck observation with the local measurement of the Hubble constant
• Reconstructing Gravity on Cosmological Scales
• Hints of a Local Matter Underdensity or Modified Gravity in the Low $z$ Pantheon data
• Planck 2015 constraints on the non-flat $\Lambda$CDM inflation model
• Late-time Inhomogeneity and Acceleration Without Dark Energy
• Phenomenology of Modified Gravity at Recombination
• Cosmological constraints on post-Newtonian parameters in effectively massless scalar-tensor theories of gravity
• What can Machine Learning tell us about the background expansion of the Universe?
• Tension of the $E_G$ statistic and RSD data with Planck/$\Lambda$CDM and implications for weakening gravity
• The $H_0$ tension: $\Delta G_N$ vs. $\Delta N_{\mathrm{eff}}$
• Observational Constraints on Oscillating Dark-Energy Parametrizations
• Conjoined constraints on modified gravity from the expansion history and cosmic growth
• Statistical Inconsistencies in the KiDS-450 Dataset
• Features in Dark Energy Equation of State and Modulations in the Hubble Diagram
• Joint Measurement of Lensing-Galaxy Correlations Using SPT and DES SV Data
• Structure formation in cosmologies with oscillating dark energy
• Metastable Dark Energy with Radioactive-like Decay
• Cosmological constant vis-a-vis dynamical vacuum: bold challenging the $\Lambda$CDM
• Oscillations in the dark energy EoS: new MCMC lessons
• Observational constraints of a new unified dark fluid and the $H_0$ tension
• Hints of dark energy anisotropic stress using Machine Learning
• Unified Dark Energy and Dark Matter from Dynamical Space Time
• Metastable dark energy models in light of Planck 2018: Alleviating the $H_0$ tension
• Internal Robustness: systematic search for systematic bias in SN Ia data
• Generalized LTB model with Inhomogeneous Isotropic Dark Energy: Observational Constraints
• Model-independent constraints on Type Ia supernova light-curve hyper-parameters and reconstructions of the expansion history of the Universe
• Cosmic chronometers constraints on some fast-varying dark energy equations of state
• Is there any measurable redshift dependence on the SN Ia absolute magnitude?

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