BAHAMAS: new SNIa analysis reveals inconsistencies with standard cosmology

Abstract

We present results obtained by applying our BAyesian HierArchical Modeling for the Analysis of Supernova cosmology (BAHAMAS) software package to the 740 spectroscopically confirmed supernovae type Ia (SNIa) from the "Joint Light-curve Analysis" (JLA) dataset. We simultaneously determine cosmological parameters and standardization parameters, including host galaxy mass corrections, residual scatter and object-by-object intrinsic magnitudes. Combining JLA and Planck Cosmic Microwave Background data, we find significant discrepancies in cosmological parameter constraints with respect to the standard analysis: we find Omega_M = 0.399+/-0.027, 2.8σ higher than previously reported and w = -0.910+/-0.045, 1.6σ higher than the standard analysis. We determine the residual scatter to be sigma_res = 0.104+/-0.005. We confirm (at the 95% probability level) the existence of two sub-populations segregated by host galaxy mass, separated at log_{10}(M/M_solar) = 10, differing in mean intrinsic magnitude by 0.055+/-0.022 mag, lower than previously reported. Cosmological parameter constraints are however unaffected by inclusion of host galaxy mass corrections. We find ~4σ evidence for a sharp drop in the value of the color correction parameter, beta(z), at a redshift z_trans = 0.662+/-0.055. We rule out some possible explanations for this behaviour, which remains unexplained.

arXiv commentAdditional figures showing constraints from sub-samples from JLA. Matches ApJ accepted version

References in corpus (54)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples
• The Hubble Space Telescope Cluster Supernova Survey: V. Improving the Dark Energy Constraints Above z>1 and Building an Early-Type-Hosted Supernova Sample
• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• Some Aspects of Measurement Error in Linear Regression of Astronomical Data
• Observational Constraints on the Nature of the Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey
• SALT2: using distant supernovae to improve the use of Type Ia supernovae as distance indicators
• Improved Distances to Type Ia Supernovae with Multicolor Light Curve Shapes: MLCS2k2
• Nearby Supernova Rates from the Lick Observatory Supernova Search. II. The Observed Luminosity Functions and Fractions of Supernovae in a Complete Sample
• The Reddening-Free Decline Rate Versus Luminosity Relationship for Type Ia Supernovae
• A Precise Distance Indicator: Type Ia Supernova Multicolor Light Curve Shapes
• First-year Sloan Digital Sky Survey-II (SDSS-II) Supernova Results: Hubble Diagram and Cosmological Parameters
• Rates and properties of type Ia supernovae as a function of mass and star-formation in their host galaxies
• CfA3: 185 Type Ia Supernova Light Curves from the CfA
• Supernova 2011fe from an Exploding Carbon-Oxygen White Dwarf Star
• Two populations of progenitors for type Ia SNe?
• The Dependence of Type Ia Supernova Luminosities on their Host Galaxies
• Hubble Residuals of Nearby Type Ia Supernovae Are Correlated with Host Galaxy Masses
• The Carnegie Supernova Project: First Photometry Data Release of Low-Redshift Type Ia Supernovae
• Cosmological Constraints from Measurements of Type Ia Supernovae discovered during the first 1.5 years of the Pan-STARRS1 Survey
• Constraints on the Progenitor System of the Type Ia Supernova SN 2011fe/PTF11kly
• SALT: a Spectral Adaptive Light curve Template for Type Ia Supernovae
• Confirmation of a Star Formation Bias in Type Ia Supernova Distances and its Effect on Measurement of the Hubble Constant
• Evidence of Environmental Dependencies of Type Ia Supernovae from the Nearby Supernova Factory indicated by Local Hα
• Measuring the galaxy-mass and galaxy-dust correlations through magnification and reddening
• Host Galaxy Properties and Hubble Residuals of Type Ia Supernovae from the Nearby Supernova Factory
• Type Ia Supernova Light Curve Inference: Hierarchical Models in the Optical and Near Infrared
• The Host Galaxies of Type Ia Supernovae Discovered by the Palomar Transient Factory
• First-year Sloan Digital Sky Survey-II (SDSS-II) supernova results: consistency and constraints with other intermediate-redshift datasets
• Type Ia Supernova Light Curve Inference: Hierarchical Bayesian Analysis in the Near Infrared
• The Carnegie Supernova Project: First Near-Infrared Hubble Diagram to z~0.7
• Improved Constraints on Type Ia Supernova Host Galaxy Properties using Multi-Wavelength Photometry and their Correlations with Supernova Properties
• UNITY: Confronting Supernova Cosmology's Statistical and Systematic Uncertainties in a Unified Bayesian Framework
• Improved constraints on cosmological parameters from SNIa data
• Bayesian Estimation Applied to Multiple Species: Towards cosmology with a million supernovae
• Host Galaxies of Type Ia Supernovae from the Nearby Supernova Factory
• Cosmological Parameter Uncertainties from SALT-II Type Ia Supernova Light Curve Models
• Reconsidering the Effects of Local Star Formation On Type Ia Supernova Cosmology
• The ESO/VLT 3rd year Type Ia supernova data set from the Supernova Legacy Survey
• Photometric Supernova Cosmology with BEAMS and SDSS-II
• Distances with <4% Precision from Type Ia Supernovae in Young Star-Forming Environments
• The Hubble Space Telescope Cluster Supernova Survey: III. Correlated Properties of Type Ia Supernovae and Their Hosts at 0.9 < z < 1.46
• Metropolis-Hastings within Partially Collapsed Gibbs Samplers
• Exploring the Systematic Uncertainties of Type Ia Supernovae as Cosmological Probes
• How SN Ia host-galaxy properties affect cosmological parameters
• On the impact of intergalactic dust on cosmology with type Ia supernovae
• Exploring the evolution of color-luminosity parameter $\beta$ and its effects on parameter estimation
• A Redshift Dependent Color-Luminosity Relation in Type 1a Supernovae
• Extending BEAMS to incorporate correlated systematic uncertainties
• Comparison of cosmological parameter inference methods applied to supernovae lightcurves fitted with SALT2

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• A probabilistic framework for cosmological inference of peculiar velocities
• A cosmology-independent calibration of type Ia supernovae data
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