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 alpha = -4.3 degrees +/- 4.1 degrees. We also investigate the expected performances of future space borne experiment, finding that an overall miscalibration larger then 1 degrees for Planck and 0.2 degrees 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.
CMB Polarization Systematics in data analysis / Pagano, Luca; Gubitosi, Giulia. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - 194:C(2009), pp. 116-122. (Intervento presentato al convegno Galileo-Galilei-Institute Conference on Dark Matter and Dark Energy tenutosi a Florence, ITALY nel JAN 19-MAR 12, 2009) [10.1016/j.nuclphysbps.2009.07.019].
CMB Polarization Systematics in data analysis
PAGANO, LUCA;GUBITOSI, Giulia
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 alpha = -4.3 degrees +/- 4.1 degrees. We also investigate the expected performances of future space borne experiment, finding that an overall miscalibration larger then 1 degrees for Planck and 0.2 degrees 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
