#cmb polarization
topiccmb polarization
2 papers · 1 filter
astro-ph.CO2026
No way ou: Epoch of Reionization Observations Do not Support Large Values of the Optical Depth to Reionization
Paulo Montero-Camacho, Yi Mao
The authors combine CMB data (excluding large‑scale polarization), BAO measurements, and quasar‑based reionization observations to estimate the optical depth to reionization as τ≈0…
astro-ph.IM2026
Status and future development of the COSMOCal Project for absolute CMB polarization calibration
Silvia Micheli, Alessia Ritacco, Alessandro Carones +36
The paper outlines the COSMOCal project, which will place an artificial polarized microwave source on a geostationary satellite to provide stable absolute calibration for CMB polar…