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Phys. Rev. D 70, 123007 (2004) [7 pages]

Deconvolution map-making for cosmic microwave background observations

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Charmaine Armitage1 * and Benjamin D. Wandelt1,2,3 †
1Department of Physics, UIUC, 1110 West Green Street, Urbana, Illinois 61801, USA
2Department of Astronomy, UIUC, 1002 West Green Street, Urbana, Illinois 61801, USA
3Center for Advanced Studies, UIUC, 912 West Illinois Street, Urbana, Illinois 61801, USA

Received 6 October 2004; published 16 December 2004

We describe a new map-making code for cosmic microwave background observations. It implements fast algorithms for convolution and transpose convolution of two functions on the sphere [B. Wandelt and K. Górski, Phys. Rev. D 63, 123002 (2001)]. Our code can account for arbitrary beam asymmetries and can be applied to any scanning strategy. We demonstrate the method using simulated time-ordered data for three beam models and two scanning patterns, including a coarsened version of the WMAP strategy. We quantitatively compare our results with a standard map-making method and demonstrate that the true sky is recovered with high accuracy using deconvolution map-making.


©2004 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevD.70.123007
DOI: 10.1103/PhysRevD.70.123007
PACS: 98.70.Vc, 95.75.Pq

* Electronic address: carmitag@uiuc.edu
† Electronic address: bwandelt@uiuc.edu

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