Testing the Isotropy of the Universe with Type Ia Supernovae

Abstract

We analyze the magnitude-redshift data of type Ia supernovae included in the Union and Union2 compilations in the framework of an anisotropic Bianchi type I cosmological model and in the presence of a dark energy fluid with anisotropic equation of state. We find that the amount of deviation from isotropy of the equation of state of dark energy, the skewness δ, and the present level of anisotropy of the large-scale geometry of the Universe, the actual shear Σ_0, are constrained in the ranges -0.16 < δ< 0.12 and -0.012 < Σ_0 < 0.012 (1σC.L.) by Union2 data. Supernova data are then compatible with a standard isotropic universe (δ= Σ_0 = 0), but a large level of anisotropy, both in the geometry of the Universe and in the equation of state of dark energy, is allowed.

12 pages, 7 figures, 2 tables. Union2 analysis added. New references added. To appear in Phys. Rev. D

References in corpus (39)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Cosmological Results from High-z Supernovae
• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• New Constraints on ${\Omega }_M$, ${\Omega }_{\Lambda }$, and w from an Independent Set of Eleven High-Redshift Supernovae Observed with HST
• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• 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
• The Reddening-Free Decline Rate Versus Luminosity Relationship for Type Ia Supernovae
• A high resolution foreground cleaned CMB map from WMAP
• 23 High Redshift Supernovae from the IfA Deep Survey: Doubling the SN Sample at z>0.7
• Consistently Large Cosmic Flows on Scales of 100 Mpc/h: a Challenge for the Standard LCDM Cosmology
• The ESSENCE Supernova Survey: Survey Optimization, Observations, and Supernova Photometry
• SALT: a Spectral Adaptive Light curve Template for Type Ia Supernovae
• BVRI Light Curves for 29 Type Ia Supernovae
• Correlated Fluctuations in Luminosity Distance and the (Surprising) Importance of Peculiar Motion in Supernova Surveys
• Cosmological Limits on Slightly Skew Stresses
• Cosmic Microwave Background Quadrupole and Ellipsoidal Universe
• Ellipsoidal Universe Can Solve The CMB Quadrupole Problem
• Mapping extreme-scale alignments of quasar polarization vectors
• Searching for a Cosmological Preferred Axis: Union2 Data Analysis and Comparison with Other Probes
• Accelerating Cosmologies with an Anisotropic Equation of State
• Anisotropic Dark Energy: Dynamics of Background and Perturbations
• Analytic marginalization over CMB calibration and beam uncertainty
• A Model of Universe Anisotropization
• Discovery of Two Distant Type Ia Supernovae in the Hubble Deep Field North with the Advanced Camera for Surveys
• Cosmology with moving dark energy and the CMB quadrupole
• On the Possibility of Anisotropic Curvature in Cosmology
• Constraints on Cosmological Anisotropy out to z=1 from Supernovae Ia
• Hubble Space Telescope Observations of Nine High-Redshift ESSENCE Supernovae
• Direction Dependent Non-gaussianity in High-z Supernova Data
• Can Cosmic Parallax Distinguish Between Anisotropic Cosmologies?

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