Open AccessOn the large‐scale cosmic microwave background polarization
Author(s) -
Cea Paolo
Publication year - 2010
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2010.16697.x
Subject(s) - physics , cosmic microwave background , polarization (electrochemistry) , planck , astrophysics , anisotropy , cosmology , astronomy , cosmic cancer database , decoupling (probability) , optics , chemistry , control engineering , engineering
We discuss the large‐scale polarization of the cosmic microwave background induced by the anisotropy of the spatial geometry of our Universe. Assuming an eccentricity at decoupling of about 0.64 × 10 −2 , we find an average large‐scale polarization Δ T pol / T 0 = (0.5–1.0) × 10 −6 . We suggest that the forthcoming polarization data at large scales from Planck will be able to discriminate between our proposal and the generally accepted re‐ionization scenario.