Constraint on the primordial gravitational waves
from the joint analysis of BICEP2
and Planck HFI 353 GHz dust polarization data
We make a joint analysis of BICEP2 and recently released Planck HFI 353 GHz dust polarization data, and find that there is no evidence for the primordial gravitational waves http://arxiv.org/abs/1409.7025
Tensors, BICEP2, prior dependence, and dust
from simple ination models, we
would have to conclude that there could not be a pri-
mordial signal strong enough to be detected by BICEP2,
whose signal would need an alternative explanation such
as polarized dust. http://arxiv.org/abs/1409.6530
Planck intermediate results. XXX. The angular power spectrum of polarized dust emission at intermediate and high Galactic latitudes
We find a systematic ratio between the amplitudes of the Galactic B
- and E
-modes of 0.5. We show that even in the faintest dust-emitting regions there are no "clean" windows where primordial CMB B
-mode polarization could be measured without subtraction of dust emission http://arxiv.org/abs/1409.5738