Cosmic Microwave and Infrared Backgrounds cross-correlation for ISW detection
Abstract
We investigate the cross-correlation between the cosmic infrared and microwave backgrounds (CIB & CMB) anisotropies through the integrated Sachs-Wolfe effect. We first describe the CIB anisotropies using a linearly biased power spectrum, then derive the theoretical angular power spectrum of the CMB-CIB cross-correlation for different instruments and frequencies. We discuss the detectability of the ISW signal by performing a signal-to-noise (SNR) analysis with our predicted spectra. The significances obtained range from 6{\sigma} to 7{\sigma} in an ideal case, depending on the frequency ; in realistic cases which account for the presence of noise including astrophysical contaminants, the results span the range 2-5{\sigma}, depending strongly on the major contribution to the noise term.
Keywords
Cite
@article{arxiv.1205.2537,
title = {Cosmic Microwave and Infrared Backgrounds cross-correlation for ISW detection},
author = {Stéphane Ilic},
journal= {arXiv preprint arXiv:1205.2537},
year = {2015}
}
Comments
4 pages, 1 table. Contribution to the proceedings of the International Conference on Gravitation and Cosmology, Goa, India, December, 2011