Optimal limits on f_{NL}^{local} from WMAP 5-year data

Abstract

We have applied the optimal estimator for f_{NL}^{local} to the 5 year WMAP data. Marginalizing over the amplitude of foreground templates we get -4 < f_{NL}^{local} < 80 at 95% CL. Error bars of previous (sub-optimal) analyses are roughly 40% larger than these. The probability that a Gaussian simulation, analyzed using our estimator, gives a result larger in magnitude than the one we find is 7%. Our pipeline gives consistent results when applied to the three and five year WMAP data releases and agrees well with the results from our own sub-optimal pipeline. We find no evidence of any residual foreground contamination.

[v1] 21 pages, 7 figures. [v2] minor changes matching published version

References in corpus (34)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Non-Gaussian features of primordial fluctuations in single field inflationary models
• Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
• The Effective Field Theory of Inflation
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Foreground Emission
• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• The primordial density perturbation in the curvaton scenario
• Single field consistency relation for the 3-point function
• The shape of non-Gaussianities
• Constraints on local primordial non-Gaussianity from large scale structure
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Galactic Foreground Emission
• Detection of Gravitational Lensing in the Cosmic Microwave Background
• Limits on non-Gaussianities from WMAP data
• Measuring primordial non-Gaussianity in the cosmic microwave background
• Detection of primordial non-Gaussianity (fNL) in the WMAP 3-year data at above 99.5% confidence
• Non-Gaussianities in models with a varying inflaton decay rate
• How to make maps from CMB data without losing information
• On the consistency relation of the 3-point function in single field inflation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Galactic Foreground Emission
• A smooth bouncing cosmology with scale invariant spectrum
• The Microwave Background Bispectrum, Paper II: A Probe of the Low Redshift Universe
• Limits on f_NL parameters from WMAP 3yr data
• Imprint of Reionization on the Cosmic Microwave Background Bispectrum
• Estimators for local non-Gaussianities
• Direct Signature of Evolving Gravitational Potential from Cosmic Microwave Background
• Dark energy and cosmic microwave background bispectrum
• Temperature and Polarization CMB Maps from Primordial non-Gaussianities of the Local Type
• Extragalactic Point Source Search in Five-year WMAP 41, 61 and 94 GHz Maps
• Point Source Contamination in CMB Non-Gaussianity Analyses
• The Bispectrum and the Trispectrum of the Ostriker and Vishniac Effect

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