CMB Neutrino Mass Bounds and Reionization

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 $\sim$40% in a generalized reionization scenario. Moreover, the amplitude of the r.m.s. mass fluctuations ${\sigma }_8$ is also considerably lower providing a better consistency with a low amplitude of the Sunyaev-Zel'dovich signal.

References in corpus (8)

• Efficient Computation of CMB anisotropies in closed FRW models
• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• Measurements of Secondary Cosmic Microwave Background Anisotropies with the South Pole Telescope
• Observables sensitive to absolute neutrino masses. II
• Reionization constraints from five-year WMAP data
• An improved limit on the neutrino mass with CMB and redshift-dependent halo bias-mass relations from SDSS, DEEP2, and Lyman-Break Galaxies
• Harrison-Z'eldovich primordial spectrum is consistent with observations
• Conservative Estimates of the Mass of the Neutrino from Cosmology

Cited by in corpus (7)

• Future CMB tests of dark matter: ultra-light axions and massive neutrinos
• The large scale polarization explorer (LSPE) for CMB measurements: performance forecast
• Probing neutrino physics with a self-consistent treatment of the weak decoupling, nucleosynthesis, and photon decoupling epochs
• Constraining the reionization history with CMB and spectroscopic observations
• Weighing neutrinos using high redshift galaxy luminosity functions
• Dark Twilight Joined with the Light of Dawn to Unveil the Reionization History
• Principal component analysis of the reionization history from Planck 2015 data