Search Results for author: Duncan Hanson

Found 3 papers, 0 papers with code

Bias-Hardened CMB Lensing

no code implementations1 Sep 2012 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 estimators, with minimal loss of signal-to-noise.

Cosmology and Nongalactic Astrophysics

The shape of the CMB lensing bispectrum

no code implementations11 Jan 2011 Antony Lewis, Anthony Challinor, Duncan Hanson

Lensing of the CMB generates a significant bispectrum, which should be detected by the Planck satellite at the 5-sigma level and is potentially a non-negligible source of bias for f_NL estimators of local non-Gaussianity.

Cosmology and Nongalactic Astrophysics

CMB lensing and primordial non-Gaussianity

no code implementations28 May 2009 Duncan Hanson, Kendrick M. Smith, Anthony Challinor, Michele Liguori

We study the effects of gravitational lensing on the estimation of non-Gaussianity from the bispectrum of the cosmic microwave background (CMB) temperature anisotropies.

Cosmology and Nongalactic Astrophysics

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