A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2015; you can also visit the original URL.
The file type is
Angular spectra for non-Gaussian isotropic fields
Brazilian Journal of Probability and Statistics
Cosmic Microwave Background (CMB) Anisotropies is a subject of intensive research in recent years, and therefore it is necessary to develop suitable theory and methods for the analysis of isotropic fields on spheres. The main object of our paper is to show that the polyspectra can be given as the coefficients of the orthogonal expansion of cumulants of the field in terms of irreducible tensor products of spherical harmonics. We obtain necessary and sufficient conditions for isotropy of adoi:10.1214/14-bjps249 fatcat:kghkxrvbyzgvrcue6koc3obqxi