Abstract
Planck's cosmic microwave background temperature and polarization observations are the premier dataset for constraining cosmological models. Cosmic variance limited temperature at large and intermediate scales today dominates the constraints; polarization provides additional constraining power and further scrutiny of the models. To complete this picture from Planck, ground-based experiments, such as the Atacama Cosmology Telescope (ACT) and the South Pole Telescope (SPT) continue to add temperature and polarization measurements at small scales, allowing for the extraction of competitive cosmological constraints from the $TE$ and $EE$ power spectra. Matching at the same time all these stringent probes is a key challenge and validation step for any cosmological model. In particular, $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ requires a tight consistency between the temperature and polarization measurements. In this paper, we present a number of methods to identify and quantify possible inconsistencies between temperature and polarization, we apply them to the latest Planck, ACT, and SPT data and find no evidence for a deviation from $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$. Application of these methods will have increased importance for future, more constraining CMB data.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have