Evidence for Scale-Scale Correlations in the Cosmic Microwave Background Radiation

Abstract

We perform a discrete wavelet analysis of the COBE-DMR 4yr sky maps and find a significant scale-scale correlation on angular scales from about 11 to 22 degrees, only in the DMR face centered on the North Galactic Pole. This non-Gaussian signature does not arise either from the known foregrounds or the correlated noise maps, nor is it consistent with upper limits on the residual systematic errors in the DMR maps. Either the scale-scale correlations are caused by an unknown foreground contaminate or systematic errors on angular scales as large as 22 degrees, or the standard inflation plus cold dark matter paradigm is ruled out at the $>99$ confidence level.

Accepted for publication in Physical Review Letters

References in corpus (20)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• A Line of Sight Approach to Cosmic Microwave Background Anisotropies
• The Cold Dark Matter Density Perturbation
• Cosmic Temperature Fluctuations from Two Years of COBE DMR Observations
• Evidence for non-Gaussianity in the COBE DMR Four Year Sky Maps
• Tests for Non-Gaussian Statistics in the DMR Four-Year Sky Maps
• Estimating non-gaussianity in the microwave background
• The Angular Bispectrum of The Cosmic Microwave Background
• Minkowski Functional Description of Microwave Background Gaussianity
• Fast Spherical Harmonic Analysis: a quick algorithm for generating and/or inverting full sky, high resolution CMB Anisotropy maps
• Calibration and Systematic Error Analysis For the COBE-DMR Four-Year Sky Maps
• An Infrared Cutoff Revealed by the Two Years of COBE-DMR Observations of Cosmic Temperature Fluctuations
• Contribution to the Three--Point Function of the Cosmic Microwave Background from the Rees--Sciama Effect
• An Attempt to Determine the Largest Scale of Primordial Density Perturbations in the Universe
• Correlated Errors in the COBE DMR Sky Maps
• Cumulants as non-Gaussian qualifiers
• Power correlations in cosmology: limits on primordial non-Gaussian density fields
• Probing Hierarchical Clustering by Scale-Scale Correlations of Wavelet Coefficients
• Non-Gaussian bounds in the variance from small scale CMB observations
• Skewness in the Cosmic Microwave Background Anisotropy from Inflationary Gravity Wave Background

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