About lensing reconstruction program

Use of Healpix, camb, CLASS, cosmomc, compilers, etc.
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Qinan Wang
Posts: 1
Joined: October 19 2016
Affiliation: University of Hong Kong

About lensing reconstruction program

Post by Qinan Wang » December 12 2016

Hi all,

Recently I wrote a program on lensing reconstruction using quadratic estimator, and it's based on LensPix packages. But the results seem always incorrect when I test it using testing sample. The estimated lensing potential is higher than the sample by around 2 order, and the reconstructed map looks very different from the simulated map from sample. So I wonder if anyone came across similar problems before, or if anyone has written reconstruction codes before and is willing to share it.

My code is stored in Github . currently we are working on adding systematics incluence into CMB and study the noise caused to reconstructed lensing potential in full-sky cases. Any other advice or suggestions are also welcomed!

Antony Lewis
Posts: 1369
Joined: September 23 2004
Affiliation: University of Sussex

Re: About lensing reconstruction program

Post by Antony Lewis » December 12 2016

Just reconstruction noise?

You can try Duncan's quicklens package: https://github.com/dhanson/quicklens

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