Constraints on the cosmological parameters from BICEP2, Planck and WMAP
arXiv:1403.7173 · doi:10.1140/epjc/s10052-014-3139-1
Abstract
In this paper we constrain the cosmological parameters, in particular the tilt of tensor power spectrum, by adopting Background Imaging of Cosmic Extragalactic Polarization (B2), Planck released in 2013 (P13) and Wilkinson Microwaves Anisotropy Probe 9-year Polarization (WP) data. We find that a blue tilted tensor power spectrum is preferred at more than confidence level if the data from B2 are assumed to be totally interpreted as the relic gravitational waves, but a scale invariant tensor power spectrum is consistent with the data once the polarized dust is taken into account. The recent Planck 353 GHz HFI dust polarization data imply that the B2 data are perfectly consistent with there being no gravitational wave signal.
arXiv comment4 pages, 3 figures and 1 table; major revision, dust added for solving the tension between Planck13 and BICEP2, version accepted for publication in EPJC
References in corpus (13)
- Efficient Computation of CMB anisotropies in closed FRW models
- Cosmological parameters from CMB and other data: a Monte-Carlo approach
- A Line of Sight Approach to Cosmic Microwave Background Anisotropies
- BICEP2 I: Detection Of B-mode Polarization at Degree Angular Scales
- Efficient sampling of fast and slow cosmological parameters
- CMB power spectrum parameter degeneracies in the era of precision cosmology
- The linear power spectrum of observed source number counts
- The 21cm angular-power spectrum from the dark ages
- Integral Solution for the Microwave Background Anisotropies in Non-fl at Universes
- How much can we learn about the physics of inflation?
- Inflationary Tensor Perturbations After BICEP
- Relic gravitational waves: latest revisions and preparations for new data
- Cosmic microwave background polarization analysis