CMB Neutrino Mass Bounds and Reionization
Cosmology and Nongalactic Astrophysics
2010-11-11 v1
Abstract
Current cosmic microwave background (CMB) bounds on the sum of the neutrino masses assume a sudden reionization scenario described by a single parameter that determines the onset of reionization. We investigate the bounds on the neutrino mass in a more general reionization scenario based on a principal component approach. We found the constraint on the sum of the neutrino masses from CMB data can be relaxed by a 40% in a generalized reionization scenario. Moreover, the amplitude of the r.m.s. mass fluctuations is also considerably lower providing a better consistency with a low amplitude of the Sunyaev-Zel'dovich signal.
Keywords
Cite
@article{arxiv.1010.5757,
title = {CMB Neutrino Mass Bounds and Reionization},
author = {Maria Archidiacono and Asantha Cooray and Alessandro Melchiorri and Stefania Pandolfi},
journal= {arXiv preprint arXiv:1010.5757},
year = {2010}
}