Superimposed Oscillations in the WMAP Data?

Abstract

The possibility that the cosmic variance outliers present in the recently released WMAP multipole moments are due to oscillations in the primordial power spectrum is investigated. Since the most important contribution to the WMAP likelihood originates from the outliers at relatively small angular scale (around the first Doppler peak), special attention is paid to these in contrast with previous studies on the subject which have concentrated on the large scales outliers only (i.e. the quadrupole and octupole). As a physically motivated example, the case where the oscillations are of trans-Planckian origin is considered. It is shown that the presence of the oscillations causes an important drop in the WMAP chi square of about fifteen. The F-test reveals that such a drop has a probability less than 0.06% to occur by chance and can therefore be considered as statistically significant.

9 pages, 3 figures, uses RevTex 4, references added, matches published version

References in corpus (27)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Implications for Inflation
• Wilkinson Microwave Anisotropy Probe (WMAP) First Year Observations: TE Polarization
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectrum
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Parameter Estimation Methodology
• Dodecahedral space topology as an explanation for weak wide-angle temperature correlations in the cosmic microwave background
• On the Dependence of the Spectra of Fluctuations in Inflationary Cosmology on Trans-Planckian Physics
• Is the Low CMB Quadrupole a Signature of Spatial Curvature?
• Does the small CMB quadrupole moment suggest new physics?
• A Maximum Likelihood Analysis of the Low CMB Multipoles from WMAP
• Non-commutative inflation and the CMB
• Constraining slow-roll inflation with WMAP and 2dF
• Double Inflation and the Low CMB Quadrupole
• The Statistical Significance of the Low CMB Mulitipoles
• CMB Power Spectrum from Noncommutative Spacetime
• Parametric amplification of metric fluctuations through a bouncing phase
• WMAP and Inflation
• A note on alpha-vacua and interacting field theory in de Sitter space
• Noncommutative Inflation and the CMB Multipoles
• Principal Power of the CMB
• Trans-Planckian footprints in inflationary cosmology
• Vacuum Choices and the Predictions of Inflation
• The Fate of the Alpha-Vacuum
• An inflation model with large variations in spectral index
• Minimal Theoretical Uncertainties in Inflationary Predictions
• Can Planck-scale physics be seen in the cosmic microwave background ?

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