An Efficient Technique to Determine the Power Spectrum from Cosmic Microwave Background Sky Maps
An Efficient Technique to Determine the Power Spectrum from Cosmic Microwave Background Sky Maps
There is enormous potential to advance cosmology from statistical characterizations of cosmic microwave background (CMB) sky maps. The angular power spectrum of the microwave anisotropy is a particularly important statistic. Existing algorithms for computing the angular power spectrum of a pixelized map typically require O(N3) operations and O(N2) storage, where …