Multi-component power spectra estimation method for multi-detector observations of the Cosmic Microwave Background

Details Multi-component power spectra estimation method for multi-detector observations of the Cosmic Microwave Background Multi-component power spectra estimation method for multi-detector observations of the Cosmic Microwave Background

2003-11-13

arxiv.org/abs/astro-ph/0311305v1

New Astron.Rev. 47 (2003) 871-875

Astronomy and Astrophysics

Astrophysics

7 pages, 1 figure, proc. of the CMBnet workshop, 20-21 Feb. 2003 Oxford, UK. New Astronomy Reviews (eds. A. Melchiorri, J.I. S

Scientific paper

We present a new method for multi-component power spectra estimation in multi-frequency observations of the CMB. Our method is based on matching a model to the cross and auto power spectra of observed maps. All the component power spectra are estimated, as well as their mixing matrix. Noise power spectra are also estimated. The method has been applied to full-sky Planck simulations containing five astrophysical components and white noise. The beam smoothing effect is taken into account.

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