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The scalar perturbation spectral index n_s: WMAP sensitivity to unresolved point sources
K. M. Huffenberger, H. K. Eriksen, F. K. Hansen +2
Precision measurement of the scalar perturbation spectral index, n_s, from the Wilkinson Microwave Anisotropy Probe temperature angular power spectrum requires the subtraction of u…
The joint large-scale foreground-CMB posteriors of the 3-year WMAP data
H. K. Eriksen, C. Dickinson, J. B. Jewell +3
Using a Gibbs sampling algorithm for joint CMB estimation and component separation, we compute the large-scale CMB and foreground posteriors of the 3-yr WMAP temperature data. Our…
Joint Bayesian component separation and CMB power spectrum estimation
H. K. Eriksen, J. B. Jewell, C. Dickinson +3
We describe and implement an exact, flexible, and computationally efficient algorithm for joint component separation and CMB power spectrum estimation, building on a Gibbs sampling…
Bayesian analysis of the low-resolution polarized 3-year WMAP sky maps
H. K. Eriksen, Greg Huey, A. J. Banday +4
We apply a previously developed Gibbs sampling framework to the foreground corrected 3-yr WMAP polarization data and compute the power spectrum and residual foreground template amp…
Hemispherical power asymmetry in the three-year Wilkinson Microwave Anisotropy Probe sky maps
H. K. Eriksen, A. J. Banday, K. M. Gorski +2
We consider the issue of hemispherical power asymmetry in the three-year WMAP data, adopting a previously introduced modulation framework. Computing both frequentist probabilities…