Wavelet domain Bayesian denoising of string signal in the cosmic microwave background
Astrophysics
2009-11-16 v2
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.
Keywords
Cite
@article{arxiv.0811.1267,
title = {Wavelet domain Bayesian denoising of string signal in the cosmic microwave background},
author = {D. K. Hammond and Y. Wiaux and P. Vandergheynst},
journal= {arXiv preprint arXiv:0811.1267},
year = {2009}
}
Comments
16 pages, 11 figures. Version 2 matches version accepted for publication in MNRAS. Changes include substantial clarifications on our approach and a significant reduction of manuscript length