EDP Sciences
Free access
Issue
A&A
Volume 395, Number 2, November IV 2002
Page(s) 417 - 421
Section Cosmology
DOI http://dx.doi.org/10.1051/0004-6361:20021288


A&A 395, 417-421 (2002)
DOI: 10.1051/0004-6361:20021288

CMB power spectrum estimation for the Planck Surveyor

A. Balbi1, 2, G. de Gasperis1, P. Natoli1, 2 and N. Vittorio1, 2

1  Dipartimento di Fisica, Università di Roma "Tor Vergata", via della Ricerca Scientifica 1, 00133, Roma, Italy
2  INFN, Sezione di Roma II, via della Ricerca Scientifica 1, 00133, Roma, Italy

(Received 12 March 2002 / Accepted 3 September 2002 )

Abstract
We use an iterative generalized least squares map-making algorithm, in conjunction with Monte Carlo techniques, to obtain estimates of the angular power spectrum from cosmic microwave background (CMB) maps. This is achieved by characterizing and removing the instrumental noise contribution in multipole space. This technique produces unbiased estimates and can be applied to an arbitrary experiment. In this paper, we use it on realistic simulations of Planck Low Frequency Instrument (LFI) observations, showing that it can lead to fast and reliable estimation of the CMB angular power spectrum from megapixel maps.


Key words: cosmic microwave background -- methods: data analysis

Offprint request: A. Balbi, balbi@roma2.infn.it




© ESO 2002