Generic description of CMB power spectra
Astrophysics
2007-05-23 v1
Abstract
Taking advantage of the smoothness of CMB Cl power spectra, we derive a simple and model-independent parameterization of their measurement. It allows to describe completely the spectrum, ie. provide an estimate of the value and the error for any real l point at the percent level, down to low l multipole. We provide this parameterization for WMAP first year data and show that the spectrum is consistent with the smoothness hypothesis. We also show how such a parameterization allows to retrieve the Cl spectra from the measurement of Fourier rings on the sky (Gamma(m)) or from the angular correlation function (c(theta))
Keywords
Cite
@article{arxiv.astro-ph/0309526,
title = {Generic description of CMB power spectra},
author = {S. Plaszczynski and F. Couchot},
journal= {arXiv preprint arXiv:astro-ph/0309526},
year = {2007}
}