Weak lensing of the CMB (2009)
Hanson, Duncan, Challinor, Anthony, Lewis, Antony
The cosmic microwave background (CMB) represents a unique source for the study of gravitational lensing. It is extended across the entire sky, partially polarized, located at the extreme distance of...
Estimators for CMB Statistical Anisotropy (2009)
We use quadratic maximum-likelihood (QML) estimators to constrain models with Gaussian but statistically anisotropic Cosmic Microwave Background (CMB) fluctuations, using CMB maps with realistic...
Lensing reconstruction from PLANCK sky maps: inhomogeneous noise (2009)
Hanson, Duncan, Rocha, Graca, Gorski, Krzysztof
We discuss the effects of inhomogeneous sky-coverage on CMB lens reconstruction, focusing on application to the recently launched Planck satellite. We discuss the mean-field which is induced by noise...
CMB lensing and primordial non-Gaussianity (2009)
Hanson, Duncan, Smith, Kendrick M., Challinor, Anthony, Liguori, Michele
We study the effects of gravitational lensing on the estimation of non-Gaussianity from the bispectrum of the cosmic microwave background (CMB) temperature anisotropies. We find that the effect of...
CMBPol Mission Concept Study: Gravitational Lensing (2008)
Smith, Kendrick M., Cooray, Asantha, Das, Sudeep, Doré, Olivier, Hanson, Duncan, Hirata, Chris, ...
Gravitational lensing of the cosmic microwave background by large-scale structure in the late universe is both a source of cosmological information and a potential contaminant of primordial gravity...
Directionality in the WMAP Polarization Data (2007)
Hanson, Duncan, Scott, Douglas, Bunn, Emory F.
Polarization is the next frontier of CMB analysis, but its signal is dominated over much of the sky by foregrounds which must be carefully removed. To determine the efficacy of this cleaning it is...
Thesis (D. Min.)--San Francisco Theological Seminary, 1990.