## 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

## IRAM Maps of the Crab nebula

Maps of the Crab nebula at 89.189 GHz (HCO+(1-0) transition) in both temperature and polarization, prodouced from observations performed at the IRAM 30m telescope from January 9th to January 12th 2009, are delivered as a tarball of 416 KB in the file

File:Crab IRAM 2010.zip

See README in the tarball for full details. These data were used in[2]

## References

1. Measurement of the Crab nebula polarization at 90 GHz as a calibrator for CMB experiments, J. Aumont, L. Conversi, C. Thum, H. Wiesemeyer, E. Falgarone, J. F. Macías-Pérez, F. Piacentini, E. Pointecouteau, N. Ponthieu, J. L. Puget, C. Rosset, J. A. Tauber, M. Tristram, A&A, 514, A70+, (2010).