28 research outputs found
Planck early results III : First assessment of the Low Frequency Instrument in-flight performance
Peer reviewe
Additive risk model with case-cohort sampled current status data
additive risk model, current status data, two phase sampling,
Bayesian foreground analysis with CMB data
The quality of CMB observations has improved dramatically in the last few years, and will continue to do so in the coming decade.
Over a wide range of angular scales, the uncertainty due to instrumental noise is now small compared to the cosmic variance. One may
claim with some justification that we have entered the era of precision CMB cosmology. However, some caution is still warranted: The
errors due to residual foreground contamination in the CMB power spectrum and cosmological parameters remain largely unquantified,
and the effect of these errors on important cosmological parameters such as the optical depth Ï and spectral index n_s is not obvious. A
major goal for current CMB analysis efforts must therefore be to develop methods that allow us to propagate such uncertainties from the
raw data through to the final products. Here we review a recently proposed method that may be a first step towards that goal