Peer-Reviewed Journal Details
Mandatory Fields
Rosset, C;Yurchenko, VB;Delabrouille, J;Kaplan, J;Giraud-Heraud, Y;Lamarre, JM;Murphy, JA
2007
March
Astronomy and Astrophysics
Beam mismatch effects in cosmic microwave background polarization measurements
Published
16 ()
Optional Fields
PROBE WMAP OBSERVATIONS MEASURING CMB POLARIZATION ANGULAR POWER SPECTRUM ESA PLANCK SURVEYOR WAVE TELESCOPE PARAMETERS SIMULATIONS GAUSSIANITY RADIATION BOOMERANG
464
405
415
Measurement of cosmic microwave background polarization is today a major goal of observational cosmology. The level of the signal to measure, however, makes it very sensitive to various systematic effects. In the case of Planck, which measures polarization by combining data from various detectors, the beam asymmetry can induce a conversion of temperature signals to polarization signals or a polarization mode mixing. In this paper, we investigate this effect using realistic simulated beams and propose a first-order method to correct the polarization power spectra for the induced systematic effect.
LES ULIS CEDEX A
0004-6361
10.1051/0004-6361:20042230
Grant Details