Publications (19)
Directionality in the WMAP Polarization Data
Duncan Hanson, Douglas Scott, Emory F. Bunn
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 thi…
Patchy Screening of the Cosmic Microwave Background by Inhomogeneous Reionization
Vera Gluscevic, Marc Kamionkowski, Duncan Hanson
We derive a constraint on patchy screening of the cosmic microwave background from inhomogeneous reionization, using off-diagonal TB and TT correlations in WMAP-7 temperature/polar…
On the joint analysis of CMB temperature and lensing-reconstruction power spectra
Marcel M. Schmittfull, Anthony Challinor, Duncan Hanson +1
Gravitational lensing provides a significant source of cosmological information in modern CMB parameter analyses. It is measured in both the power spectrum and trispectrum of the t…
Full-sky CMB lensing reconstruction in presence of sky-cuts
Aurélien Benoit-Lévy, Typhaine Déchelette, Karim Benabed +3
We consider the reconstruction of the CMB lensing potential and its power spectrum of the full sphere in presence of sky-cuts due to point sources and Galactic contaminations. Thos…
Asymmetric Beams and CMB Statistical Anisotropy
Duncan Hanson, Antony Lewis, Anthony Challinor
Beam asymmetries result in statistically-anisotropic cosmic microwave background (CMB) maps. Typically, they are studied for their effects on the CMB power spectrum, however they m…
Estimators for CMB Statistical Anisotropy
Duncan Hanson, Antony Lewis
We use quadratic maximum-likelihood (QML) estimators to constrain models with Gaussian but statistically anisotropic Cosmic Microwave Background (CMB) fluctuations, using CMB maps…