Cosmic infrared background anisotropies as a window into primordial non-Gaussianity

被引：19
作者：
Tucci, Marco [1 ]
Desjacques, Vincent [1 ]
Kunz, Martin [1 ]
机构：
[1] Univ Geneva, Dept Phys Theor, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2016年 / 463卷 / 02期
基金：
瑞士国家科学基金会;
关键词：
cosmology: theory; inflation; large-scale structure of Universe; PARAMETRIC COMPONENT SEPARATION; HALO OCCUPATION DISTRIBUTION; SCALE-DEPENDENT BIAS; MAXIMUM-LIKELIHOOD; GALAXY; MODELS; DETECTABILITY; CONSTRAINTS; FOREGROUNDS; STATISTICS;
D O I：
10.1093/mnras/stw2086
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The angular power spectrum of the cosmic infrared background (CIB) is a sensitive probe of the local primordial bispectrum. CIB measurements are integrated over a large volume so that the scale-dependent bias from the primordial non-Gaussianity leaves a strong signal in the CIB power spectrum. Although Galactic dust dominates over the non-Gaussian CIB signal, it is possible to mitigate the dust contamination with enough frequency channels, especially if high frequencies such as the Planck 857 GHz channel are available. We show that, in this case, measurements of the cosmic microwave background from future space missions should be able to probe the local bispectrum shape down to an amplitude vertical bar f(NL)vertical bar < 1.
引用
收藏
页码：2046 / 2063
页数：18
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