Weighing Neutrinos with Galaxy Cluster Surveys
Astrophysics
2011-05-12 v1 High Energy Physics - Phenomenology
Abstract
Large future galaxy cluster surveys, combined with cosmic microwave background observations, can achieve a high sensitivity to the masses of cosmologically important neutrinos. We show that a weak lensing selected sample of ~100,000 clusters could tighten the current upper bound on the sum of masses of neutrino species by an order of magnitude, to a level of 0.03 eV. Since this statistical sensitivity is below the best existing lower limit on the mass of at least one neutrino species, a future detection is likely, provided that systematic errors can be controlled to a similar level.
Cite
@article{arxiv.astro-ph/0505390,
title = {Weighing Neutrinos with Galaxy Cluster Surveys},
author = {Sheng Wang and Zoltan Haiman and Wayne Hu and Justin Khoury and Morgan May},
journal= {arXiv preprint arXiv:astro-ph/0505390},
year = {2011}
}
Comments
4 pages, 1 figure, version accepted for publication in PRL