Planck intermediate results. XXX. The angular power spectrum of polarized dust emission at intermediate and high Galactic latitudesThe polarized thermal emission from Galactic dust is the main foreground present in measurements of the polarization of the cosmic microwave background (CMB) at frequencies above 100GHz. We exploit the Planck HFI polarization data from 100 to 353GHz to measure the dust angular power spectra $C_\ell^{EE,BB}$ over the range $40<\ell<600$ well away from the Galactic plane. These will bring new insigh
First glimpse of big bang ripples from universe's birth
