Top panel: synchrotron and thermal dust full-sky-averaged SEDs as estimated blindly by SMICA. Red and blue curves indicate thermal dust and synchrotron E modes, respectively, and orange and cyan curves indicate corresponding B modes. Dotted lines indicate the best-fit spectra for a power-law fit with βs = −3.10 ± 0.06 for synchrotron, and a modified blackbody fit with βd = 1.53 ± 0.01 and Td = 19.6K for thermal dust emission. Bottom panel: residual spectral energy densities relative to best-fit models, measured in units of the data uncertainty, σν.
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