Local Voids as the Origin of Large-angle Cosmic Microwave Background Anomalies: The Effect of a Cosmological Constant

Abstract

We explore the large angular scale temperature anisotropies in the cosmic microwave background (CMB) due to homogeneous local dust-filled voids in a flat Friedmann-Robertson-Walker universe with a cosmological constant. In comparison with the equivalent dust-filled void model in the Einstein-de Sitter background, we find that the anisotropy for compensated asymptotically expanding local voids can be larger because second-order effects enhance the linear integrated Sachs-Wolfe (ISW) effect. However, for local voids that expand sufficiently faster than the asymptotic velocity of the wall, the second-order effect can suppress the fluctuation due to the linear ISW effect. A pair of quasi-linear compensated asymptotic local voids with radius (2-3)*10^2 ~h^{-1} Mpc and a matter density contrast ~-0.3 can be observed as cold spots with a temperature anisotropy Delta T/T~O(10^{-5}) that might help explain the observed large-angle CMB anomalies. We predict that the associated anisotropy in the local Hubble constant in the direction of the voids could be as large as a few percent.

arXiv comment23 pages, 5 figures, version accepted for publication in ApJ with minor revision

References in corpus (41)

• Cosmological parameters from SDSS and WMAP
• The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances
• Asymmetries in the CMB anisotropy field
• A high resolution foreground cleaned CMB map from WMAP
• The significance of the largest scale CMB fluctuations in WMAP
• The 6dF Galaxy Survey: Samples, Observational Techniques and the First Data Release
• Detection of non-Gaussianity in the WMAP 1-year data using spherical wavelets
• Is the low-l microwave background cosmic?
• Dodecahedral space topology as an explanation for weak wide-angle temperature correlations in the cosmic microwave background
• A Map of the Universe
• Multipole Vectors--a new representation of the CMB sky and evidence for statistical anisotropy or non-Gaussianity at 2<=l<=8
• Evidence of vorticity and shear at large angular scales in the WMAP data: a violation of cosmological isotropy?
• Non-Gaussian Signatures in the Temperature Fluctuation Observed by the Wilkinson Microwave Anisotropy Probe
• The non-Gaussian Cold Spot in WMAP: significance, morphology and foreground contribution
• Voids in a $\Lambda$CDM Universe
• Local Voids as the Origin of Large-angle Cosmic Microwave Background Anomalies I
• Cross-correlation of WMAP 3rd year and the SDSS DR4 galaxy survey: new evidence for Dark Energy
• The Hot and Cold Spots in the WMAP Data are Not Hot and Cold Enough
• Cosmic Microwave Background, Accelerating Universe and Inhomogeneous Cosmology
• Cosmological Parameters from the Comparison of the 2MASS Gravity Field with Peculiar Velocity Surveys
• The Local Hole in the Galaxy Distribution: Evidence from 2MASS
• Statistics of Voids in the 2dF Galaxy Redshift Survey
• Tree structure of the percolating Universe
• Reconnection of Non-Abelian Cosmic Strings
• A New Force in the Dark Sector?
• The 2dF Galaxy Redshift Survey: Hierarchical galaxy clustering
• Bulk flows and CMB dipole anisotropy in cosmological void models
• The Local Hole in the Galaxy Distribution: New Optical Evidence
• Microwave sky and the local Rees-Sciama effect
• Phase Mapping as a Powerful Diagnostic of Primordial Non-Gaussianity
• Second-order gravitational effects of local inhomogeneities on CMB anisotropies and non-Gaussian signatures
• Cosmological parameters and the WMAP data revisited
• Did WMAP see Moving Local Structures?
• 2MASS Constraints on the Local Large-Scale Structure: A Challenge to LCDM?
• Statistics of Merging Peaks of Random Gaussian Fluctuations: Skeleton Tree Formalism
• Effect of Void Network on CMB Anisotropy
• A possible contribution to CMB anisotropies at high l from primordial voids
• Anisotropy of the Hubble Constant in a Cosmological Model with a Local Void on Scales of ~ 200 Mpc
• Constraining CMB-consistent primordial voids with cluster evolution
• On the microwave background anisotropy produced by big voids in open universes
• Dipole anisotropies of IRAS galaxies and the contribution of a large-scale local void

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• Constraints on anisotropic cosmic expansion from supernovae
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• An Alternative String Landscape Cosmology: Eliminating Bizarreness
• Hidden in the background: a local approach to CMB anomalies