Constraining cosmology with the cosmic microwave and infrared backgrounds correlation

0504729 - FZÚ 2020 RIV FR eng J - Journal Article
Maniyar, A. - Lagache, G. - Bethermin, M. - Ilić, Stephane
Constraining cosmology with the cosmic microwave and infrared backgrounds correlation.
Astronomy & Astrophysics. Roč. 621, Jan (2019), s. 1-19, č. článku A32. ISSN 0004-6361. E-ISSN 1432-0746
EU Projects: European Commission(XE) 617656 - THEMODS
Institutional support: RVO:68378271
Keywords : infrared:diffuse background * cosmic background radiation * large-scale structure of Universe * cosmological parameters * cosmology: observations * methods: statistical
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.636, year: 2019
Method of publishing: Open access

We explore the use of the cosmic infrared background (CIB) as a tracer of the large scale structures for cross-correlating with the cosmic microwave background (CMB) and exploit the integrated Sachs–Wolfe (ISW) effect. We used an improved linear CIB model from our previous work and derived the theoretical CIB×ISW cross-correlation for different Planck HFI frequencies (217, 353, 545 and 857 GHz) and IRAS (3000 GHz). As expected, we predict a positive cross-correlation between the CIB and the CMB whose amplitude decreases rapidly at small scales. We perform a signal-to-noise ratio (S/N) analysis of the predicted cross-correlation. In the ideal case when the cross-correlation is obtained over 70% (40%) of the sky without residual contaminants (e.g. galactic dust) in maps, the S/N ranges from 4.2 to 5.6 (3.2 to 4.3), the highest S/N comes from 857 GHz.

Permanent Link: http://hdl.handle.net/11104/0296302