期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 2, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2012/02/017
关键词
non-gaussianity; CMBR theory
资金
- ASI/INAF [I/072/09/0]
We estimate analytically the second-order cosmic microwave background temperature anisotropies at the recombination epoch in the squeezed limit and we deduce the contamination of 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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