Deconvolution map-making for cosmic microwave background observations

Charmaine Armitage and Benjamin D. Wandelt
Phys. Rev. D 70, 123007 – Published 16 December 2004

Abstract

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.

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  • Received 6 October 2004

DOI:https://doi.org/10.1103/PhysRevD.70.123007

©2004 American Physical Society

Authors & Affiliations

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

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

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Issue

Vol. 70, Iss. 12 — 15 December 2004

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