# Difference between revisions of "Specially processed maps"

## Overview

This section describes products that require special processing. Only one such product is available at this time; this section will be expanded with time as more products are added.

## Lensing map

We distribute the minimum-variance (MV) lensing potential estimate presented in [1] as part of the 2014 data release. This map represents an estimate of the lensing potential on approximately 70% of the sky, and also forms the basis for the Planck 2014 lensing likelihood. It is produced using filtered temperature and polarization data from the SMICA DX11 map; its construction is discussed in detail in [1].

The estimate is contained in a single gzipped tarball named COM_CompMap_Lensing_2048_R0.00.tgz. Its contents are described below.

Contents of COM_CompMap_Lensing_2048_R0.00.tgz
Filename Format Description
dat_klm.fits HEALPIX format alm, with $L_{\rm max} = 2048$ Contains the estimated lensing convergence $\hat{\kappa}_{LM} = \frac{1}{2} L(L+1)\hat{\phi}_{LM}$.
mask.fits.gz HEALPIX format map, with $N_{\rm side} = 2048$ Contains the lens reconstruction analysis mask.
nlkk.dat ASCII text file, with columns = ($L$, $N_L$, $C_L+N_L$) The approximate noise $N_L$ (and signal+noise, $C_L+N_L$) power spectrum of $\hat{\kappa}_{LM}$, for the fiducial cosmology used in [1].

TBW