A Possible Cold Imprint of Voids on the Microwave Background Radiation

Abstract

We measure the average temperature decrement on the cosmic microwave background (CMB) produced by voids selected in the SDSS DR7 spectroscopic redshift galaxy catalog, spanning redshifts $0<z<0.44$. We find an imprint of amplitude between 2.6 and 2.9$\mu K$ as viewed through a compensated top-hat filter scaled to the radius of each void; we assess the statistical significance of the imprint at ~2$\sigma$. We make crucial use of $N$-body simulations to calibrate our analysis. As expected, we find that large voids produce cold spots on the CMB through the Integrated Sachs-Wolfe (ISW) effect. However, we also find that small voids in the halo density field produce hot spots, because they reside in contracting, larger-scale overdense regions. This is an important effect to consider when stacking CMB imprints from voids of different radius. We have found that the same filter radius that gives the largest ISW signal in simulations also yields close to the largest detected signal in the observations. However, although it is low in significance, our measured signal is much higher-amplitude than expected from ISW in the concordance $\Lambda$CDM universe. The discrepancy is also at the ~2$\sigma$ level. We have demonstrated that our result is robust against the varying of thresholds over a wide range.

Accepted for publication in ApJ. 10 pages, 7 figures

References in corpus (22)

• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
• ZOBOV: a parameter-free void-finding algorithm
• Correlation of CMB with large-scale structure: I. ISW Tomography and Cosmological Implications
• Planck 2013 results. XII. Component separation
• An Imprint of Super-Structures on the Microwave Background due to the Integrated Sachs-Wolfe Effect
• Combined analysis of the integrated Sachs-Wolfe effect and cosmological implications
• Voids in Modified Gravity: Excursion Set Predictions
• Planck 2013 results. XIX. The integrated Sachs-Wolfe effect
• Cosmology with Void-Galaxy Correlations
• The significance of the integrated Sachs-Wolfe effect revisited
• Clues on void evolution I: Large scale galaxy distributions around voids
• Cross-correlation of 2MASS and WMAP3: Implications for the Integrated Sachs-Wolfe effect
• Detecting the integrated Sachs-Wolfe effect with stacked voids
• A robust public catalogue of voids and superclusters in the SDSS Data Release 7 galaxy surveys
• VOBOZ: An Almost-Parameter-Free Halo-Finding Algorithm
• The stacked ISW signal of rare superstructures in ΛCDM
• The Integrated Sachs-Wolfe effect in $f(R)$ gravity
• Impact of Scale Dependent Bias and Nonlinear Structure Growth on the ISW Effect: Angular Power Spectra
• On the signature of $z\sim 0.6$ superclusters and voids in the Integrated Sachs-Wolfe effect
• The Jubilee ISW Project I: simulated ISW and weak lensing maps and initial power spectra results
• Cosmological Density Fluctuations on 100Mpc Scales and their ISW Effect
• A response to arXiv:1310.2791: A self-consistent public catalogue of voids and superclusters in the SDSS Data Release 7 galaxy surveys

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• Constraining Quintessence Models with ISW-tSZ Cross-Correlations: A Comparative Analysis of Thawing, Tracker, and Scaling-Freezing Dynamics