A numerical study of observational systematic errors in lensing analysis of CMB polarization
Cosmology and Nongalactic Astrophysics
2021-06-10 v2
Abstract
Impacts of observational systematic errors on the lensing analysis of the cosmic microwave background (CMB) polarization are investigated by numerical simulations. We model errors of gain, angle, and pointing in observation of the CMB polarization and simulate polarization fields modulated by the errors. We discuss the response of systematics-induced -modes to amplitude and spatial scale of the imposed errors and show that the results of the lensing reconstruction and delensing analysis behave according to it. It is observed that error levels expected in the near future lead to no significant degradation in delensing efficiency.
Keywords
Cite
@article{arxiv.2102.00133,
title = {A numerical study of observational systematic errors in lensing analysis of CMB polarization},
author = {Ryo Nagata and Toshiya Namikawa},
journal= {arXiv preprint arXiv:2102.00133},
year = {2021}
}