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arXiv · 1109.2043

Non-Gaussianity in the Cosmic Microwave Background Anisotropies at Recombination in the Squeezed limit

N. Bartolo·S. Matarrese·A. Riotto
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Abstract

We estimate analytically the second-order cosmic microwave background temperature anisotropies at the recombination epoch in the squeezed limit and we deduce the contamination to the primordial local non-Gaussianity. We find that the level of contamination corresponds to f_NL^{con}=O(1) which is below the sensitivity of present experiments and smaller than the value O(5) recently claimed in the literature.

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N. Bartolo, S. Matarrese, A. Riotto. 2011-09-13. Non-Gaussianity in the Cosmic Microwave Background Anisotropies at Recombination in the Squeezed limit. https://doi.org/10.1088/1475-7516%2F2012%2F02%2F017

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