Abstract
Abstract We address in this work the instrumental systematic errors that can potentially affect the forthcoming and future Cosmic Microwave Background experiments aimed at observing its polarized emission. In particular, we focus on the systematics induced by the beam and calibration, which are considered the major sources of leakage from total intensity measurements to polarization. We simulated synthetic data sets with Time-Ordered Astrophysics Scalable Tools, a publicly available simulation and data analysis package. We also propose a mitigation technique aiming at reducing the leakage by means of a template fitting approach. This technique has shown promising results reducing the leakage by 2 orders of magnitude at the power spectrum level when applied to a realistic simulated data set of the LiteBIRD satellite mission.
Highlights
The Cosmic Microwave Background (CMB) emission provides one of the most favorite channels for probing the Universe at large scales
We address in this work the instrumental systematic errors that can potentially affect the forthcoming and future Cosmic Microwave Background experiments aimed at observing its polarized emission
In order to mitigate the systematic residuals induced by calibration systematics described in the previous Section, we outline below a technique aimed at further reduce the leakage
Summary
Powered by the California Digital Library University of California arXiv:2106.06005v1 [astro-ph.CO] 10 Jun 2021. Simulating Calibration and Beam Systematics for future CMB space mission with TOAST package. Borrill1, 2, 3 1Computational Cosmology Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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