Deconvolution Map-Making for Cosmic Microwave Background Observations

Details Deconvolution Map-Making for Cosmic Microwave Background Observations Deconvolution Map-Making for Cosmic Microwave Background Observations

2004-10-05

arxiv.org/abs/astro-ph/0410092v2

Phys.Rev. D70 (2004) 123007

Astronomy and Astrophysics

Astrophysics

9 pages, 4 figures, reference added, and small correction in figure 2. Full paper with high resolution figures at http://www

Scientific paper

10.1103/PhysRevD.70.123007

We describe a new map-making code for cosmic microwave background (CMB) observations. It implements fast algorithms for convolution and transpose convolution of two functions on the sphere (Wandelt & G\'{o}rski 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.

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