Unbiased primordial gravitational wave inference from the CMB with SMICA
Abstract
Abstract The detection of primordial gravitational waves in Cosmic Microwave Background B-mode polarization observations requires accurate and robust subtraction of astrophysical contamination. We show, using a blind Spectral Matching Independent Component Analysis, that it is possible to infer unbiased estimates of the primordial B-mode signal from ground-based observations of a small patch of sky even for highly complex foreground contamination. This work, originally performed in the context of configuration studies for a future CMB-S4 observatory, is highly relevant for the analysis of observations by the current generation of CMB experiments.
Fields of Study & Subjects
Cosmology and Gravitation Theories
Pulsars and Gravitational Waves Research
Scientific Research and Discoveries
Publication details
- Journal / source
- Journal of Cosmology and Astroparticle Physics
- Publisher
- IOP Publishing
- Volume
- 2026
- Issue
- 02
- Pages
- 080–080
- Publication date
- 1 February 2026
- Language
- EN