A projected estimate of the reionization optical depth using the CLASS experiment's sample variance limited e-mode measurement

DJ Watts, B Wang, A Ali, JW Appel… - The Astrophysical …, 2018 - iopscience.iop.org
We analyze simulated maps of the Cosmology Large Angular Scale Surveyor (CLASS)
experiment and recover a nearly cosmic variance limited estimate of the reionization optical …

Reconstructing CMB fluctuations and the mean reionization optical depth

PD Meerburg, J Meyers, KM Smith, A Van Engelen - Physical Review D, 2017 - APS
The Thomson optical depth from reionization is a limiting factor in measuring the amplitude
of primordial fluctuations, and hence in measuring physics that affects the low-redshift …

Systematic errors in cosmic microwave background polarization measurements

D O'Dea, A Challinor, BR Johnson - Monthly Notices of the Royal …, 2007 - academic.oup.com
We investigate the impact of instrumental systematic errors on the potential of cosmic
microwave background polarization experiments targeting primordial B-modes. To do so, we …

Complementing the ground-based CMB-S4 experiment on large scales with the PIXIE satellite

E Calabrese, D Alonso, J Dunkley - Physical Review D, 2017 - APS
We present forecasts for cosmological parameters from future cosmic microwave
background (CMB) data measured by the stage-4 (S4) generation of ground-based …

Measuring the reionization optical depth without large-scale CMB polarization

W Giarè, E Di Valentino, A Melchiorri - Physical Review D, 2024 - APS
We study the possibility of measuring the optical depth at reionization τ without relying on
large-scale cosmic microwave background (CMB) polarization. Our analysis is driven by the …

Measuring the largest angular scale CMB B-mode polarization with galactic foregrounds on a cut sky

DJ Watts, D Larson, TA Marriage… - The Astrophysical …, 2015 - iopscience.iop.org
We consider the effectiveness of foreground cleaning in the recovery of Cosmic Microwave
Background (CMB) polarization sourced by gravitational waves for tensor-to-scalar ratios in …

Lensing power spectrum of the cosmic microwave background with deep polarization experiments

L Legrand, J Carron - Physical Review D, 2022 - APS
Precise reconstruction of the cosmic microwave background lensing potential can be
achieved with deep polarization surveys by iteratively removing lensing-induced B modes …

Eliminating the optical depth nuisance from the CMB with 21 cm cosmology

A Liu, JR Pritchard, R Allison, AR Parsons, U Seljak… - Physical Review D, 2016 - APS
Amongst standard model parameters that are constrained by cosmic microwave background
(CMB) observations, the optical depth τ stands out as a nuisance parameter. While τ …

Beyond optical depth: Future determination of ionization history from the cosmic microwave background

DJ Watts, GE Addison, CL Bennett… - The Astrophysical …, 2020 - iopscience.iop.org
We explore the fundamental limits to which reionization histories can be constrained using
only large-scale cosmic microwave background (CMB) anisotropy measurements. The …

Systematic errors in cosmic microwave background interferometry

EF Bunn - Physical Review D—Particles, Fields, Gravitation, and …, 2007 - APS
Cosmic microwave background (CMB) polarization observations will require superb control
of systematic errors in order to achieve their full scientific potential, particularly in the case of …