A joint analysis of Planck and BICEP2 B modes including dust polarization uncertainty

We analyze BICEP2 and Planck data using a model that includes CMB lensing, gravity waves, and polarized dust. Recently published Planck dust polarization maps have highlighted the difficulty of estimating the amount of dust polarization in low intensity regions, suggesting that the polarization frac...

Full description

Saved in:
Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2014-10, Vol.2014 (10), p.35-35
Main Authors: Mortonson, Michael J., Seljak, Uroš
Format: Article
Language:English
Subjects:
AMPLITUDES
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CALIBRATION
CORRELATIONS
DENSITY
DETECTION
DUSTS
ERRORS
FREQUENCY ANALYSIS
GHZ RANGE
GRAVITY WAVES
INFLATIONARY UNIVERSE
NOISE
POLARIZATION
SAMPLING
SCALARS
SIGNALS
SPECTRA
TENSORS
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We analyze BICEP2 and Planck data using a model that includes CMB lensing, gravity waves, and polarized dust. Recently published Planck dust polarization maps have highlighted the difficulty of estimating the amount of dust polarization in low intensity regions, suggesting that the polarization fractions have considerable uncertainties and may be significantly higher than previous predictions. In this paper, we start by assuming nothing about the dust polarization except for the power spectrum shape, which we take to be C{sub l}{sup BB,dust} ∝ l{sup -2.42}. The resulting joint BICEP2+Planck analysis favors solutions without gravity waves, and the upper limit on the tensor-to-scalar ratio is r
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2014/10/035