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

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 bel...

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Detalles Bibliográficos
Autores principales: Bartolo, N., Matarrese, S., Riotto, A.
Lenguaje:eng
Publicado: 2011
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1088/1475-7516/2012/02/017
http://cds.cern.ch/record/1381445
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author Bartolo, N.
Matarrese, S.
Riotto, A.
author_facet Bartolo, N.
Matarrese, S.
Riotto, A.
author_sort Bartolo, N.
collection CERN
description 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.
id cern-1381445
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
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spelling cern-13814452023-03-14T18:51:24Zdoi:10.1088/1475-7516/2012/02/017http://cds.cern.ch/record/1381445engBartolo, N.Matarrese, S.Riotto, A.Non-Gaussianity in the Cosmic Microwave Background Anisotropies at Recombination in the Squeezed limitAstrophysics and AstronomyWe 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.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.arXiv:1109.2043oai:cds.cern.ch:13814452011-09-12
spellingShingle Astrophysics and Astronomy
Bartolo, N.
Matarrese, S.
Riotto, A.
Non-Gaussianity in the Cosmic Microwave Background Anisotropies at Recombination in the Squeezed limit
title Non-Gaussianity in the Cosmic Microwave Background Anisotropies at Recombination in the Squeezed limit
title_full Non-Gaussianity in the Cosmic Microwave Background Anisotropies at Recombination in the Squeezed limit
title_fullStr Non-Gaussianity in the Cosmic Microwave Background Anisotropies at Recombination in the Squeezed limit
title_full_unstemmed Non-Gaussianity in the Cosmic Microwave Background Anisotropies at Recombination in the Squeezed limit
title_short Non-Gaussianity in the Cosmic Microwave Background Anisotropies at Recombination in the Squeezed limit
title_sort non-gaussianity in the cosmic microwave background anisotropies at recombination in the squeezed limit
topic Astrophysics and Astronomy
url https://dx.doi.org/10.1088/1475-7516/2012/02/017
http://cds.cern.ch/record/1381445
work_keys_str_mv AT bartolon nongaussianityinthecosmicmicrowavebackgroundanisotropiesatrecombinationinthesqueezedlimit
AT matarreses nongaussianityinthecosmicmicrowavebackgroundanisotropiesatrecombinationinthesqueezedlimit
AT riottoa nongaussianityinthecosmicmicrowavebackgroundanisotropiesatrecombinationinthesqueezedlimit

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