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Wavelet domain Bayesian denoising of string signal in the cosmic microwave background

By D. K. Hammond, Y. Wiaux and P. Vandergheynst

Abstract

An algorithm is proposed for denoising the signal induced by cosmic strings in the cosmic microwave background (CMB). A Bayesian approach is taken, based on modeling the string signal in the wavelet domain with generalized Gaussian distributions. Good performance of the algorithm is demonstrated by simulated experiments at arcminute resolution under noise conditions including primary and secondary CMB anisotropies, as well as instrumental noise

Publisher: 'Wiley'
Year: 2008
DOI identifier: 10.1111/j.1365-2966.2009.14978.x
OAI identifier: oai:infoscience.tind.io:129022

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