hi cosmo-torun,
A joint analysis of Planck and BICEP2 B modes including dust polarization uncertainty
Michael J. Mortonson, Uroš Seljak
http://arxiv.org/abs/1405.5857
"... The resulting joint BICEP2+Planck analysis favors solutions
without gravity waves, and the upper limit on the tensor-to-scalar
ratio is $r<0.11$, a slight improvement relative to the Planck
analysis alone which gives $r<0.13$ ($95\%$ c.l.). The estimated
amplitude of the dust polarization power spectrum is in rough
agreement with expectations for this field based on HI column
density. ..."
Popular science description:
https://www.sciencemag.org/content/344/6186/790.full
pozdr
Boud
