Cosmic Parallax in Ellipsoidal Universe
arXiv:1103.6175 · doi:10.1142/S0217732311035638
Abstract
The detection of a time variation of the angle between two distant sources would reveal an anisotropic expansion of the Universe. We study this effect of "cosmic parallax" within the "ellipsoidal universe" model, namely a particular homogeneous anisotropic cosmological model of Bianchi type I, whose attractive feature is the potentiality to account for the observed lack of power of the large-scale cosmic microwave background anisotropy. The preferred direction in the sky, singled out by the axis of symmetry inherent to planar symmetry of ellipsoidal universe, could in principle be constrained by future cosmic parallax data. However, that will be a real possibility if and when the experimental accuracy will be enhanced at least by two orders of magnitude.
9 pages, 2 figures, 1 table. Revised version to match published version. References added
References in corpus (30)
- Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Power Spectra and WMAP-Derived Parameters
- The axis of evil
- Cosmological Limits on Slightly Skew Stresses
- Is the Low CMB Quadrupole a Signature of Spatial Curvature?
- Cosmic Microwave Background Quadrupole and Ellipsoidal Universe
- Bianchi type III models with anisotropic dark energy
- LRS Bianchi Type I Models with Anisotropic Dark Energy and Constant Deceleration Parameter
- Ellipsoidal Universe Can Solve The CMB Quadrupole Problem
- CMB Anisotropies and Inflation from Non-Standard Spinors
- Accelerating Cosmologies with an Anisotropic Equation of State
- A Low CMB Quadrupole from Dark Energy Isocurvature Perturbations
- Bayesian analysis of sparse anisotropic universe models and application to the 5-yr WMAP data
- Anisotropic Cosmological Constant and the CMB Quadrupole Anomaly
- Double Inflation and the Low CMB Quadrupole
- Possible Explanation to Low CMB Quadrupole
- A Model of Universe Anisotropization
- Correlating anomalies of the microwave sky: The Good, the Evil and the Axis
- The CMB Quadrupole depression produced by early fast-roll inflation: MCMC analysis of WMAP and SDSS data
- Correlated Isocurvature Fluctuation in Quintessence and Suppressed CMB Anisotropies at Low Multipoles
- Cosmology with moving dark energy and the CMB quadrupole
- Anisotropic dark energy and CMB anomalies
- Inflation model with lower multipoles of the CMB suppressed
- Cosmic Parallax: possibility of detecting anisotropic expansion of the universe by very accurate astrometry measurements
- Constraints on the anisotropy of dark energy
- Possible extensions of the standard cosmological model: anisotropy, rotation, and magnetic field
- Rogues' gallery: the full freedom of the Bianchi CMB anomalies
- Cosmic Parallax as a probe of late time anisotropic expansion
- Can Cosmic Parallax Distinguish Between Anisotropic Cosmologies?
- Modelling the WMAP large-angle anomalies as an effect of a local density inhomogeneity
Cited by in corpus (25)
- Gauge Fields and Inflation
- Statistical Anisotropy from Anisotropic Inflation
- Anisotropic Universe Models in f(T) Gravity
- Designing Anisotropic Inflation with Form Fields
- Testing the isotropy of the Universe with type Ia supernovae in a model-independent way
- Bianchi I meets the Hubble diagram
- A covariant treatment of cosmic parallax
- The distribution of galaxy rotation in JWST Advanced Deep Extragalactic Survey
- Helium-4 Synthesis in an Anisotropic Universe
- Large-scale asymmetry in galaxy spin directions: evidence from the Southern hemisphere
- Analysis of spin directions of galaxies in the DESI Legacy Survey
- New evidence and analysis of cosmological-scale asymmetry in galaxy spin directions
- Using 3D and 2D analysis for analyzing large-scale asymmetry in galaxy spin directions
- Reanalysis of the spin direction distribution of Galaxy Zoo SDSS spiral galaxies
- How real-time cosmology can distinguish between different anisotropic models
- An empirical consistent redshift bias: A possible direct reproducible observation of Zwicky's TL theory
- Analysis of spiral galaxies from four telescopes shows large-scale patterns of asymmetry in galaxy spin directions
- Large-scale asymmetry in the distribution of galaxy spin directions -- analysis and reproduction
- Large-scale asymmetry in galaxy spin directions -- analysis of galaxies with spectra in DES, SDSS, and DESI Legacy Survey
- Galaxy spin direction asymmetry in JWST deep fields
- Algebraic symmetries of the observables on the sky: Variable emitters and observers
- A simple direct empirical observation of systematic bias of the redshift as a distance indicator
- Ellipsoidal Universe and Cosmic Shear
- Asymmetry in galaxy spin directions: a fully reproducible experiment using HSC data
- A Quantitative Framework for Testing the Hubble Tension in a Bianchi Type I Cosmological Background