Polarization of Cosmic Microwave Background

6th Young Researcher Meeting, L'Aquila 2015

Buzzelli, A.^1,2 ; Cabella, P.^1,2 ; De Gasperis, G.^1,2 ; Vittorio, N.^1,2

Dipartimento di Fisica, Università di Roma Tor Vergata, via della Ricerca Scientifica 1, Roma

I-00133, Italy^1

Sezione INFN Roma 2, via della Ricerca Scientifica 1, Roma

I-00133, Italy^2

关键词: Angular scale;    Balloon experiment;    Cosmic microwave backgrounds;    Cross-correlated noise;    Error bars;    Observational data;    Possible futures;    Power-spectra;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/689/1/012003/pdf
DOI  :  10.1088/1742-6596/689/1/012003

来源: IOP

【 摘 要 】

In this work we present an extension of the ROMA map-making code for data analysis of Cosmic Microwave Background polarization, with particular attention given to the inflationary polarization B-modes. The new algorithm takes into account a possible cross- correlated noise component among the different detectors of a CMB experiment. We tested the code on the observational data of the BOOMERanG (2003) experiment and we show that we are provided with a better estimate of the power spectra, in particular the error bars of the BB spectrum are smaller up to 20% for low multipoles. We point out the general validity of the new method. A possible future application is the LSPE balloon experiment, devoted to the observation of polarization at large angular scales.