DESTRIPING OF POLARIZED DATA IN A CMB MISSION WITH A CIRCULAR SCANNING STRATEGY
B. REVENU (1), A.KIM (1),R. ANSARI (2), F. COUCHOT (2), J. DELABROUILLE (1) and J. KAPLAN (1)
(1) Physique Corpusculaire et Cosmologie, Coll{\`e}ge de France
11 Place Marcelin Berthelot, F-75231 Paris CEDEX 05, France
(2) Laboratoire de l'Acc{\'e}l{\'e}rateur Lin{\'e}aire, IN2P3 CNRS
Universit{\'e} Paris Sud, F-91405 Orsay, France
Abstract:
A major problem in Cosmic Microwave Background (CMB) anisotropy
mapping, especially in a total-power mode, is the presence of
low-frequency noise in the data streams. If unproperly processed,
such low-frequency noise leads to striping in the maps. To deal with
this problem, solutions have already been found for mapping the CMB
temperature fluctuations but none have yet been proposed for
the measurement of CMB polarization. Complications arise due to the
scan-dependent orientation of the measured polarization.
We present a method for building temperature and
polarization maps with minimal striping effects in the case
of a circular scanning strategy mission such as the {\sc
Planck} mission.