Joint Planck and WMAP CMB Map Reconstruction
Jan 23, 201417 pages
Published in:
- Astron.Astrophys. 563 (2014) A105
- Published: Mar 17, 2014
e-Print:
- 1401.6016 [astro-ph.CO]
View in:
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Abstract: (EDP Sciences)
We present a novel estimate of the cosmological microwave background (CMB) map by combining the two latest full-sky microwave surveys: WMAP nine-year and Planck PR1. The joint processing benefits from a recently introduced component separation method coined'local-generalized morphological component analysis' (LGMCA) and based on the sparse distribution of the foregrounds in the wavelet domain. The proposed estimation procedure takes advantage of the IRIS 100 mum as an extra observation on the galactic center for enhanced dust removal. We show that this new CMB map presents several interesting aspects: i) it is a full sky map without using any inpainting or interpolating method; ii) foreground contamination is very low; iii) the Galactic center is very clean with especially low dust contamination as measured by the cross-correlation between the estimated CMB map and the IRIS 100 mum map; and iv) it is free of thermal SZ contamination.Note:
- Astronomy and Astrophysics, accepted
References(39)
Figures(59)
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