Cosmic Microwave Background Delensing Revisited: Residual Biases and a Simple Fix

Details Cosmic Microwave Background Delensing Revisited: Residual Biases and a Simple Fix Cosmic Microwave Background Delensing Revisited: Residual Biases and a Simple Fix

2011-02-28

arxiv.org/abs/1102.5729v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

8 pages, 6 figures; submitted to PRD

Scientific paper

The delensing procedure is an effective tool for removing lensing-induced $B$-mode polarization in the Cosmic Microwave Background to allow for deep searches of primordial $B$-modes. However, the delensing algorithm existing in the literature breaks down if the target $B$-mode signals overlap significantly with the lensing $B$-mode ($\sim 300

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