Sensitivity and foreground modelling for large-scale CMB B-mode polarization satellite missions

Abstract

The measurement of the large-scale B-mode polarization in the cosmic microwave background (CMB) is a fundamental goal of future CMB experiments. However, because of unprecedented sensitivity, future CMB experiments will be much more sensitive to any imperfect modelling of the Galactic foreground polarization in the reconstruction of the primordial B-mode signal. We compare the sensitivity to B-modes of different concepts of CMB satellite missions (LiteBIRD, COrE, COrE+, PRISM, EPIC, PIXIE) in the presence of Galactic foregrounds. In particular, we quantify the impact on the tensor-to-scalar parameter of incorrect foreground modelling in the component separation process. Using Bayesian fitting and Gibbs sampling, we perform the separation of the CMB and Galactic foreground B-modes. The recovered CMB B-mode power spectrum is used to compute the likelihood distribution of the tensor-to-scalar ratio. We focus the analysis to the very large angular scales that can be probed only by CMB space missions, i.e. the Reionization bump, where primordial B-modes dominate over spurious B-modes induced by gravitational lensing. We find that fitting a single modified blackbody component for thermal dust where the "real" sky consists of two dust components strongly bias the estimation of the tensor-to-scalar ratio by more than 5σ for the most sensitive experiments. Neglecting in the parametric model the curvature of the synchrotron spectral index may bias the estimated tensor-to-scalar ratio by more than 1σ. For sensitive CMB experiments, omitting in the foreground modelling a 1% polarized spinning dust component may induce a non-negligible bias in the estimated tensor-to-scalar ratio.

20 pages, 8 figures, 6 tables. Updated to match version accepted by MNRAS

References in corpus (12)

• A Joint Analysis of BICEP2/Keck Array and Planck Data
• Planck intermediate results. XIX. An overview of the polarized thermal emission from Galactic dust
• Planck 2015 results. IX. Diffuse component separation: CMB maps
• Separation of anomalous and synchrotron emissions using WMAP polarization data
• Planck intermediate results. XXII. Frequency dependence of thermal emission from Galactic dust in intensity and polarization
• A refined model for spinning dust radiation
• Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Foreground Polarization
• Study of the Experimental Probe of Inflationary Cosmology (EPIC)-Intemediate Mission for NASA's Einstein Inflation Probe
• The Experimental Probe of Inflationary Cosmology (EPIC): A Mission Concept Study for NASA's Einstein Inflation Probe
• C-Band All-Sky Survey: A First Look at the Galaxy
• Astrophysical foregrounds and primordial tensor-to-scalar ratio constraints from CMB B-mode polarization observations
• PILOT: a balloon-borne experiment to measure the polarized FIR emission of dust grains in the interstellar medium

Cited by in corpus (67)

• The Quest for B Modes from Inflationary Gravitational Waves
• The Python Sky Model: software for simulating the Galactic microwave sky
• Rethinking CMB foregrounds: systematic extension of foreground parameterizations
• Which spectral distortions does $\Lambda$CDM actually predict?
• The State-of-Play of Anomalous Microwave Emission (AME) Research
• CCAT-prime Collaboration: Science Goals and Forecasts with Prime-Cam on the Fred Young Submillimeter Telescope
• Updated design of the CMB polarization experiment satellite LiteBIRD
• Modeling the Anomalous Microwave Emission with Spinning Nanoparticles: No PAHs Required
• Exploring Cosmic Origins with CORE: B-mode Component Separation
• Peeling off foregrounds with the constrained moment ILC method to unveil primordial CMB $B$-modes
• Planck intermediate results. XLVIII. Disentangling Galactic dust emission and cosmic infrared background anisotropies
• Planck intermediate results. L. Evidence for spatial variation of the polarized thermal dust spectral energy distribution and implications for CMB $B$-mode analysis
• Forecasting performance of CMB experiments in the presence of complex foreground contaminations
• Chiral Global Embedding of Fibre Inflation Models
• A 3-D model of polarised dust emission in the Milky Way
• Mitigating Complex Dust Foregrounds in Future CMB Polarization Experiments
• Impact of polarised extragalactic sources on the measurement of CMB B-mode anisotropies
• A minimal power-spectrum-based moment expansion for CMB B-mode searches
• The Simons Observatory: gain, bandpass and polarization-angle calibration requirements for B-mode searches
• CMB from a Gauss-Bonnet-induced de Sitter fixed point
• Simulated forecasts for primordial B-mode searches in ground-based experiments
• Mapping the relativistic electron gas temperature across the sky
• Combining ILC and moment expansion techniques for extracting average-sky signals and CMB anisotropies
• The Simons Observatory: pipeline comparison and validation for large-scale B-modes
• $B$-mode forecast of CMB-Bh$\overline{a}$rat
• Extracting foreground-obscured $\mu$-distortion anisotropies to constrain primordial non-Gaussianity
• High precision modeling of polarized signals: Moment expansion method generalized to spin-2 fields
• Complementing the ground-based CMB Stage-4 experiment on large scales with the PIXIE satellite
• Maps of the number of HI clouds along the line of sight at high galactic latitude
• Frequency dependence of the thermal dust $E/B$ ratio and $EB$ correlation: insights from the spin-moment expansion
• Tensor-to-scalar ratio forecasts for extended LiteBIRD frequency configurations
• On the Detection of CMB B-modes from Ground at Low Frequency
• Dust polarization modeling at large-scale over the Northern Galactic cap using EBHIS and Planck data
• Foreground model recognition through Neural Networks for CMB B-mode observations
• The C-Band All-Sky Survey (C-BASS): Template Fitting of Diffuse Galactic Microwave Emission in the Northern Sky
• Exploring two-spin internal linear combinations for the recovery of the CMB polarization
• The Effects of Bandpass Variations on Foreground Removal Forecasts for Future CMB Experiments
• The C-Band All-Sky Survey (C-BASS): Constraining diffuse Galactic radio emission in the North Celestial Pole region
• QUBIC II: Spectro-Polarimetry with Bolometric Interferometry
• Optimization of foreground moment deprojection for semi-blind CMB polarization reconstruction
• Hierarchical Bayesian CMB Component Separation with the No-U-Turn Sampler
• A new model of the microwave polarized sky for CMB experiments
• BeyondPlanck XVI. Limits on Large-Scale Polarized Anomalous Microwave Emission from Planck LFI and WMAP
• Foreground Bias From Parametric Models of Far-IR Dust Emission
• Recovering Cosmic Microwave Background Polarization Signals with Machine Learning
• Characterizing line-of-sight variability of polarized dust emission with future CMB experiments
• Impact of modelling foreground uncertainties on future CMB polarization satellite experiments
• Analysis of Polarized Dust Emission Using Data from the First Flight of SPIDER
• Constraints on the Optical Depth to Reionization from Balloon-Borne CMB Measurements
• How bad could it be? Modelling the 3D complexity of the polarised dust signal using moment expansion
• Non-parametric maximum likelihood component separation for CMB polarization data
• Joint Bayesian estimation of tensor and lensing B-modes in the power spectrum of CMB polarization data
• Evaluation of the single-component thermal dust emission model in CMB experiments
• The C-Band All-Sky Survey (C-BASS): Simulated parametric fitting in single pixels in total intensity and polarization
• Mitigating Bias in CMB B-modes from Foreground Cleaning Using a Moment Expansion
• Effect of alignment on polarized infrared emission from polycyclic aromatic hydrocarbons
• The Simons Observatory: Assessing the Impact of Dust Complexity on the Recovery of Primordial $B$-modes
• Chaotic initial conditions for nonminimally coupled inflation via a conformal factor with a zero
• QUIJOTE scientific results -- XVIII. New constraints on the polarization of the Anomalous Microwave Emission in bright Galactic regions: $\rho$\,Ophiuchi, Perseus and W43
• Constraining the Anomalous Microwave Emission Mechanism in the S140 Star Forming Region with Spectroscopic Observations Between 4 and 8 GHz at the Green Bank Telescope
• Galactic foreground constraints on primordial $B$-mode detection for ground-based experiments
• A Bayesian ILC method for CMB B-mode posterior estimation and reconstruction of primordial gravity wave signal
• Robust Likelihoods for Inflationary Gravitational Waves from Maps of Cosmic Microwave Background Polarization
• Mitigating point-source contamination in CMB polarization: a Generalized Point Spread Function fitting approach
• B-mode polarization forecasts for GreenPol
• Imaging and Modeling Data from the Hydrogen Epoch of Reionization Array
• A novel way of constraining the $\alpha$-attractor chaotic inflation through Planck data