Minimal model dependent constraints on cosmological nuisance parameters and cosmic curvature from combinations of cosmological data

Abstract

The study of cosmic expansion history and the late time cosmic acceleration from observational data depends on the nuisance parameters associated with the data. For example, the absolute peak magnitude of type Ia supernova associated with the type Ia supernova observations and the comoving sound horizon at the baryon drag epoch associated with baryon acoustic oscillation observations are two nuisance parameters. The nuisance parameters associated with the the gamma-ray bursts data are also considered. These nuisance parameters are constrained by combining the cosmological observations using the Gaussian process regression method with minimal model dependence. The bounds obtained in this method can be used as the prior for the data analysis while considering the observational data accordingly. Along with these nuisance parameters, the cosmic curvature density parameter is also constrained simultaneously. We find that the constraints on the cosmic curvature density parameter show no significant deviations from a flat Universe.

arXiv comment18 pages, 3 figures, 5 tables

References in corpus (55)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Planck 2015 results. XIII. Cosmological parameters
• Planck 2013 results. XVI. Cosmological parameters
• Dynamics of dark energy
• The Cosmological Constant and Dark Energy
• Modified Gravity and Cosmology
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• The Case for a Positive Cosmological Lambda-term
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• Quintessence, Cosmic Coincidence, and the Cosmological Constant
• The Cosmological Constant
• Discovery of a Supernova Explosion at Half the Age of the Universe and its Cosmological Implications
• Exploring the Expansion History of the Universe
• Accelerating Universes with Scaling Dark Matter
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
• Observational Probes of Cosmic Acceleration
• Constraining Cosmological Parameters Based on Relative Galaxy Ages
• Challenges for $\Lambda$CDM: An update
• Cosmic Distances Calibrated to 1% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with LambdaCDM
• Cosmological Tests of Modified Gravity
• Beyond $\Lambda$CDM: Problems, solutions, and the road ahead
• New physics in light of the $H_0$ tension: an alternative view
• Dark Energy vs. Modified Gravity
• Reconstruction of dark energy and expansion dynamics using Gaussian processes
• Measuring the cosmological parameters with the Ep,i-Eiso correlation of Gamma-Ray Bursts
• 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
• Aspects of the cosmological "coincidence problem"
• Gaussian Process Cosmography
• Modified gravity models of dark energy
• To H0 or not to H0?
• A parametric model for dark energy
• Theoretical Models of Dark Energy
• On the use of the local prior on the absolute magnitude of Type Ia supernovae in cosmological inference
• Does Hubble Tension Signal a Breakdown in FLRW Cosmology?
• Null test of the cosmic curvature using $H(z)$ and supernovae data
• K-essence and the coincidence problem
• A new method to build the (inverse) distance ladder
• A deep learning approach to cosmological dark energy models
• Do gamma-ray burst measurements provide a useful test of cosmological models?
• Model-independent reconstruction of the linear anisotropic stress $\eta$
• Reconstructing the Cosmic Expansion History up to Redshift z=6.29 with the Calibrated Gamma-Ray Bursts
• Cosmological model-independent constraints on spatial curvature from strong gravitational lensing and type Ia supernova observations
• Testing the Mutual Consistency of the Pantheon and SDSS/eBOSS BAO Data Sets with Gaussian Processes
• Model-independent constraints on cosmic curvature: implication from updated Hubble diagram of high-redshift standard candles
• Bayesian Evidences for Dark Energy models in light of current obsevational data
• Model-independent cosmic acceleration and type Ia supernovae intrinsic luminosity redshift dependence
• Cosmic expansion parametrization: Implication for curvature and ${\text{H}}_0$ tension
• Pantheon update on a model-independent analysis of cosmological supernova data
• Cosmological parameter extraction and biases from type Ia supernova magnitude evolution
• Measuring the sound horizon and absolute magnitude of SNIa by maximizing the consistency between low-redshift data sets
• Model Independent Expansion History from Supernovae: Cosmology versus Systematics
• Model-independent constraints on cosmic curvature: implication from the future gravitational wave observation DECIGO
• Thawing Versus. Tracker Behaviour: Observational Evidence
• A model independent parametrization of the late time cosmic acceleration: constraints on the parameters from recent observations

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