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astro-ph.CO2010★ 11 cited
Wilkinson Microwave Anisotropy Probe 7-yr constraints on fNL with a fast wavelet estimator
B. Casaponsa, R. B. Barreiro, A. Curto +2
A new method to constrain the local non-linear coupling parameter fNL based on a fast wavelet decomposition is presented. Using a multiresolution wavelet adapted to the HEALPix pix…
astro-ph.CO2010★ 13 cited
On the optimality of the spherical Mexican hat wavelet estimator for the primordial non-Gaussianity
A. Curto, E. Martinez-Gonzalez, R. B. Barreiro
We study the spherical Mexican hat wavelet (SMHW) as a detector of primordial non-Gaussianity of the local type on the Cosmic Microwave Background (CMB) anisotropies. For this purp…