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Date and Time of the Query: 2019-07-18 T04:44:32 PDT
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For refcode 2014A&A...563A.105B:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2014A&A...563A.105B Joint Planck and WMAP CMB map reconstruction Bobin, J.; Sureau, F.; Starck, J.-L.; Rassat, A.; Paykari, P. Abstract. 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 micron 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 micron map; and IV) it is free of thermal SZ contamination. Appendix is available in electronic form at http://www.aanda.org Key words: cosmic background radiation, methods: data analysis, methods: statistical
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