Posted: Jul 17, 2018 6:43 pm
The 2018 release of the analysis of Planck's observations is out: https://www.cosmos.esa.int/documents/38 ... ts_L10.pdf
Improvements on the error bars almost remove B-modes completely.
Neil Turok et al will be pleased.
Improvements on the error bars almost remove B-modes completely.
15 March 2018
ABSTRACT
We report on the implications for cosmic inflation of the 2018 release of the Planck cosmic microwave background (CMB) anisotropy measure- ments. The results are fully consistent with those reported using the data from the two previous Planck cosmological releases, but have smaller uncertainties thanks to improvements in the characterization of polarization at low and high multipoles. Planck temperature, polarization, and lensing data determine the spectral index of scalar perturbations to be ns =0.9649±0.0042 at 68% CL.We find no evidence for a scale dependence of ns, either as a running or as a running of the running. The Universe is found to be consistent with spatial flatness with a precision of 0.4 % at 95 % CL by combining Planck with a compilation of BAO data. The Planck 95 % CL upper limit on the tensor-to-scalar ratio, r0.002 < 0.10, is further tightened by combining with the BICEP2/Keck Array BK14 data to obtain r0.002 < 0.064.
...more at link...
Neil Turok et al will be pleased.