BICEP2 Angular Power Spectrum
Uncertainties are statistical only, the standard deviation of the constrained lensed-ΛCDM+noise simulations. Uncertainties are calculated as the square root of diagonal elements of the bandpower covariance matrix. The nature of the simulations constrains T to match the observed sky. Thus TT, TE, and TB uncertainties do not include appropriate sample variance. Sample variance for a tensor BB signal is not included either. The calibration procedure uses TB and EB to constrain the polarization angle. Thus TB and EB cannot be used to measure astrophysical polarization rotation. The units are uK2.