We develop a formalism to include polarimeter calibration uncertainties in CMB data analysis and apply it to the B2K dataset, finding a polarization rotation angle α = - 4.3° ± 4.1°. We also investigate the expected performances of future space borne experiment, finding that an overall miscalibration larger then 1° for Planck and 0.2° for EPIC, if not properly taken into account, will produce a bias on the constraints on the cosmological parameters and could misleadingly suggest the presence of a GW background. © 2009 Elsevier B.V. All rights reserved.
CMB Polarization Systematics in data analysis / Pagano, L.; Gubitosi, G.. - 194:(2009), pp. 116-122. [10.1016/j.nuclphysbps.2009.07.019]
CMB Polarization Systematics in data analysis
Gubitosi G.
2009
Abstract
We develop a formalism to include polarimeter calibration uncertainties in CMB data analysis and apply it to the B2K dataset, finding a polarization rotation angle α = - 4.3° ± 4.1°. We also investigate the expected performances of future space borne experiment, finding that an overall miscalibration larger then 1° for Planck and 0.2° for EPIC, if not properly taken into account, will produce a bias on the constraints on the cosmological parameters and could misleadingly suggest the presence of a GW background. © 2009 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
