Forecasts of effects of beam systematics and deprojection on the third-generation ground-based cosmic microwave background experiment

Abstract

The ground-based cosmic microwave background (CMB) experiments are susceptible to various instrumental errors, especially for $B$-mode measurements. The difference between the response of two polarized detectors, referred to as the beam mismatch, would induce a $T\to P$ leakage when the detector pair is differenced to cancel the unpolarized signal. We applied the deprojection technique on the time-ordered mock data to mitigate the systematic contamination caused by beam mismatches by assuming the third-generation ground-based CMB experiment (S3). Our results show that the deprojection effectively recovered the input power spectra. We adopted the Needlet ILC (NILC) and constrained ILC (cILC) methods to reconstruct the foreground-cleaned $TEB$ maps, and we evaluated the level of residual systematic errors after the foreground cleaning pipeline by comparing the power spectra between the systematics-added data after deprojection and the systematics-free data. The results show that the residual beam systematics cleaned by deprojection do not bias the CMB measurements of the $T$, $E$, and $B$ modes nor the CMB lensing reconstruction or the estimation of the tensor-to-scalar ratio under the S3 sensitivity.

arXiv comment13 pages, 9 figures, 1 table; accepted by A&A

References in corpus (43)

• emcee: The MCMC Hammer
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• Efficient Computation of CMB anisotropies in closed FRW models
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
• The Simons Observatory: Science goals and forecasts
• BICEP / Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
• Planck 2018 results. VIII. Gravitational lensing
• Mass Reconstruction with CMB Polarization
• Gravitational Lensing Effect on Cosmic Microwave Background Polarization
• CMB Lensing Reconstruction on the Full Sky
• Planck 2018 results. IV. Diffuse component separation
• A unified pseudo-$C_{\ell }$ framework
• Planck intermediate results. LVII. Joint Planck LFI and HFI data processing
• A full sky, low foreground, high resolution CMB map from WMAP
• CMB-S4: Forecasting Constraints on Primordial Gravitational Waves
• Improved limits on the tensor-to-scalar ratio using BICEP and Planck
• The pre-launch Planck Sky Model: a model of sky emission at submillimetre to centimetre wavelengths
• BICEP2 II: Experiment and Three-Year Data Set
• The Atacama Cosmology Telescope: Two-Season ACTPol Spectra and Parameters
• CMB and SZ effect separation with Constrained Internal Linear Combinations
• Benchmark Parameters for CMB Polarization Experiments
• Mapping the Dark Matter through the CMB Damping Tail
• Lensing Reconstruction with CMB Temperature and Polarization
• Probing Primordial Gravitational Waves: Ali CMB Polarization Telescope
• A needlet ILC analysis of WMAP 7-year data: estimation of CMB temperature map and power spectrum
• Maximum a posteriori CMB lensing reconstruction
• Measurements of B-mode Polarization of the Cosmic Microwave Background from 500 Square Degrees of SPTpol Data
• Peeling off foregrounds with the constrained moment ILC method to unveil primordial CMB $B$-modes
• Quadratic estimators for CMB weak lensing
• A needlet ILC analysis of WMAP 9-year polarisation data: CMB polarisation power spectra
• BICEP2 III: Instrumental Systematics
• BICEP2/Keck Array IV: Optical Characterization and Performance of the BICEP2 and Keck Array Experiments
• Separating E and B types of polarization on an incomplete sky
• Improved cosmic microwave background (de-)lensing using general spherical harmonic transforms
• Performance forecasts for the primordial gravitational wave detection pipelines for AliCPT-1
• BICEP / Keck XVII: Line of Sight Distortion Analysis: Estimates of Gravitational Lensing, Anisotropic Cosmic Birefringence, Patchy Reionization, and Systematic Errors
• QUBIC: Exploring the primordial Universe with the Q\&U Bolometric Interferometer
• Methods for pixel domain correction of EB leakage
• Tibet${}^{\prime }$s Window on Primordial Gravitational Waves
• Blind correction of the EB-leakage in the pixel domain
• Towards ending the partial sky E-B ambiguity in CMB observations
• Forecasts of CMB lensing reconstruction of AliCPT-1 from the foreground cleaned polarization data
• Foreground removal with ILC methods for AliCPT-1

Cited by in corpus (1)

• Forecasts of constraining isotropic cosmic birefringence on AliCPT-1