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astro-ph2006★ 141 cited
Limits on f_NL parameters from WMAP 3yr data
Paolo Creminelli, Leonardo Senatore, Matias Zaldarriaga +1
We analyze the 3-year WMAP data and look for a deviation from Gaussianity in the form of a 3-point function that has either of the two theoretically motivated shapes: local and equ…
astro-ph2006★ 99 cited
Estimators for local non-Gaussianities
Paolo Creminelli, Leonardo Senatore, Matias Zaldarriaga
We study the Likelihood function of data given f_NL for the so-called local type of non-Gaussianity. In this case the curvature perturbation is a non-linear function, local in real…