Topological Analysis of High-Resolution CMB Maps
Abstract
We report the development of numerical tools for the topological analysis of sub--degree resolution, all--sky maps. Software to be released in the HEALFAST (V0.9) package defines neighbour relationships for the HEALPIX tessellation of the sphere. We apply this routine to a fast extrema search which scales strictly linearly in the number of pixels, . We also present a highly efficient algorithm for simulating the gradient vector and curvature tensor fields ``on--the--fly'' with the temperature map, needing only of order more operations.
Keywords
Cite
@article{arxiv.astro-ph/9803317,
title = {Topological Analysis of High-Resolution CMB Maps},
author = {Benjamin D. Wandelt and Eric Hivon and Kris M. Gorski},
journal= {arXiv preprint arXiv:astro-ph/9803317},
year = {2007}
}
Comments
Typo corrected. 4 pages, 3 figures. To appear in "Fundamental Parameters in Cosmology", proceedings of the XXXIIIrd Rencontres de Moriond, Tran Thanh Van (ed.). Also available with full size and full colour figures at http://www.tac.dk/~wandelt/downloads.html