Publication Date:
2014-03-21
Description:
We propose a method to extract the unlensed, intrinsic cosmic microwave background (CMB) temperature and polarization power spectra from the observed (i.e. lensed) spectra. Using a matrix inversion technique, we demonstrate how one can reconstruct the intrinsic CMB power spectra directly from lensed data for both flat-sky and full-sky analyses. The delensed spectra obtained by the technique are calibrated against the Code for Anisotropies in the Microwave Background ( camb ) using Wilkinson Microwave Anisotropy Probe ( WMAP ) 7-year best-fitting data and applied to WMAP 9-year unbinned data as well. In principle, our methodology may help in subtracting out the E-mode lensing contribution in order to obtain the intrinsic B-mode power.
Print ISSN:
0035-8711
Electronic ISSN:
1365-2966
Topics:
Physics
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