Simulating Calibration and Beam Systematics for a Future CMB Space Mission with the TOAST Package

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.

References in corpus (7)

• Signature of Gravity Waves in Polarization of the Microwave Background
• BICEP2 / Keck Array x: Constraints on Primordial Gravitational Waves using Planck, WMAP, and New BICEP2/Keck Observations through the 2015 Season
• A CMB Polarization Primer
• Planck intermediate results. LVII. Joint Planck LFI and HFI data processing
• Updated design of the CMB polarization experiment satellite LiteBIRD
• Making CMB temperature and polarization maps with Madam
• A Demonstration of Improved Constraints on Primordial Gravitational Waves with Delensing

Cited by in corpus (3)

• The Simons Observatory: Beam characterization for the Small Aperture Telescopes
• Fast map-based simulations of systematics in CMB surveys including effects of the scanning strategy
• Testing magnetic interference between TES detectors and the telescope environment for future CMB satellite missions