The integrated bispectrum as a test of CMB non-Gaussianity: detection power and limits on f_NL with WMAP data

P. Cabella, F. K. Hansen, M. Liguori +4

We propose a fast and efficient bispectrum statistic for Cosmic Microwave Background (CMB) temperature anisotropies to constrain the amplitude of the primordial non-Gaussian signal…