Unbiased Primordial Gravitational Wave Inference from the CMB with SMICA
Fuente:
arXiv
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917293094600704 |
|---|---|
| author | Steier, Alexander Ghosh, Shamik Delabrouille, Jacques |
| author_facet | Steier, Alexander Ghosh, Shamik Delabrouille, Jacques |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_26767 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Unbiased Primordial Gravitational Wave Inference from the CMB with SMICA Steier, Alexander Ghosh, Shamik Delabrouille, Jacques Cosmology and Nongalactic Astrophysics 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. |
| title | Unbiased Primordial Gravitational Wave Inference from the CMB with SMICA |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2510.26767 |