Impact of polarisation on the intrinsic CMB bispectrum

11 Jun 2014Guido W. PettinariChristian FidlerRobert CrittendenKazuya KoyamaAntony LewisDavid Wands

We compute the bispectrum induced in the cosmic microwave background (CMB) temperature and polarisation by the evolution of the primordial density perturbations using the second-order Boltzmann code SONG. We show that adding polarisation increases the signal-to-noise ratio by a factor four with respect to temperature alone and we estimate the observability of this intrinsic bispectrum and the bias it induces on measurements of primordial non-Gaussianity... (read more)

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