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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…
Bias-Hardened CMB Lensing
Toshiya Namikawa, Duncan Hanson, Ryuichi Takahashi
We present new methods for lensing reconstruction from CMB temperature fluctuations which have smaller mean-field and reconstruction noise bias corrections than current lensing est…
First CMB Constraints on Direction-Dependent Cosmological Birefringence from WMAP-7
Vera Gluscevic, Duncan Hanson, Marc Kamionkowski +1
A Chern-Simons coupling of a new scalar field to electromagnetism may give rise to cosmological birefringence, a rotation of the linear polarization of electromagnetic waves as the…