Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Foreground removal with ILC methods for AliCPT-1

Journal Article · · Journal of Cosmology and Astroparticle Physics
 [1];  [2];  [3];  [1]
  1. Univ. of Science and Technology of China, Hefei (China)
  2. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  3. Yangzhou Univ., Jiangsu (China)
+ Show Author Affiliations
One of the main goals of most future CMB experiments is the precise measurement of CMB B-mode polarization, whose major obstacle is the Galactic foregrounds. In this paper, we evaluate the foreground cleaning performance of the variants of the ILC method on partial sky B-modes and analyze the main sources of biases on the BB power spectrum. Specially, we compare the NILC, the cILC (in three domains) and the cMILC methods for AliCPT-1 simulations. We find that the cILC methods implemented in harmonic space and needlet space are both competent to clean different models of foregrounds, which bias the tensor-to-scalar ratio about 0.008 at maximum, and constrain the tensor-to-scalar ratio to r < 0.043(95%CL) for the AliCPT-1 configuration. We also note that the deviation of the estimated noise bias from the actual one for ILC, dubbed the noise bias error (NBE) in this paper, might make significant effects on the power spectrum for a small footprint and low signal-to-noise ratio CMB experiment. We finally obtain its relation with respect to the noise residual which fits well with the simulated results.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
Fundamental Research Funds for the Central Universities; National Key R&D Program of China; National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2427294
Journal Information:
Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 05 Vol. 2024; ISSN 1475-7516
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

References (60)

LiteBIRD: A Satellite for the Studies of B-Mode Polarization and Inflation from Cosmic Background Radiation Detection journal February 2019
Encyclopædia Inflationaris journal December 2014
All-sky astrophysical component separation with Fast Independent Component Analysis (FASTICA) journal July 2002
The pre-launch Planck Sky Model: a model of sky emission at submillimetre to centimetre wavelengths journal May 2013
Planck intermediate results : XXX. The angular power spectrum of polarized dust emission at intermediate and high Galactic latitudes journal February 2016
Planck 2015 results : X. Diffuse component separation: Foreground maps journal September 2016
Planck intermediate results : XLVIII. Disentangling Galactic dust emission and cosmic infrared background anisotropies journal December 2016
Planck 2018 results: XI. Polarized dust foregrounds journal September 2020
S–PASS view of polarized Galactic synchrotron at 2.3 GHz as a contaminant to CMB observations journal October 2018
Planck 2018 results: I. Overview and the cosmological legacy of Planck journal September 2020
Planck 2018 results: IV. Diffuse component separation journal September 2020
Planck 2018 results: VI. Cosmological parameters journal September 2020
Analysis of Needlet Internal Linear Combination performance on B-mode data from sub-orbital experiments journal September 2023
Tensor-to-scalar ratio forecasts for extended LiteBIRD frequency configurations journal August 2023
Improved cosmic microwave background (de-)lensing using general spherical harmonic transforms journal October 2023
Separation of anomalous and synchrotron emissions using WMAP polarization data journal September 2008
A full sky, low foreground, high resolution CMB map from WMAP journal November 2008
Probing Inflation with CMB Polarization
  • Baumann, Daniel; Jackson, Mark G.; Adshead, Peter
  • CMB POLARIZATION WORKSHOP: THEORY AND FOREGROUNDS: CMBPol Mission Concept Study, AIP Conference Proceedings https://doi.org/10.1063/1.3160885
conference January 2009
Efficient Computation of Cosmic Microwave Background Anisotropies in Closed Friedmann‐Robertson‐Walker Models journal August 2000
Four-Year [ITAL]COBE[/ITAL] DMR Cosmic Microwave Background Observations: Maps and Basic Results journal June 1996
Removing Point Sources from Cosmic Microwave Background Maps journal June 1998
First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Preliminary Maps and Basic Results journal September 2003
On Foreground Removal from the Wilkinson Microwave Anisotropy Probe Data by an Internal Linear Combination Method: Limitations and Implications journal September 2004
HEALPix: A Framework for High‐Resolution Discretization and Fast Analysis of Data Distributed on the Sphere journal April 2005
Joint Bayesian Component Separation and CMB Power Spectrum Estimation journal March 2008
emcee : The MCMC Hammer
  • Foreman-Mackey, Daniel; Hogg, David W.; Lang, Dustin
  • Publications of the Astronomical Society of the Pacific, Vol. 125, Issue 925 https://doi.org/10.1086/670067
journal March 2013
NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE ( WMAP ) OBSERVATIONS: FINAL MAPS AND RESULTS journal September 2013
The Atacama Cosmology Telescope: two-season ACTPol spectra and parameters journal June 2017
Exploring cosmic origins with CORE: B -mode component separation journal April 2018
The Simons Observatory: science goals and forecasts journal February 2019
Towards ending the partial sky E-B ambiguity in CMB observations journal February 2021
In-flight polarization angle calibration for LiteBIRD: blind challenge and cosmological implications journal January 2022
Efficient ILC analysis on polarization maps after EB leakage correction journal July 2022
Performance forecasts for the primordial gravitational wave detection pipelines for AliCPT-1 journal October 2022
Forecasts of CMB lensing reconstruction of AliCPT-1 from the foreground cleaned polarization data journal April 2023
Foreground separation and constraints on primordial gravitational waves with the PICO space mission journal June 2023
Peeling off foregrounds with the constrained moment ILC method to unveil primordial CMB B modes journal March 2021
B-mode forecast of CMB-Bhārat journal May 2022
A needlet ILC analysis of WMAP 9-year polarization data: CMB polarization power spectra journal August 2013
Exploring two-spin internal linear combinations for the recovery of the CMB polarization journal March 2016
The Python Sky Model: software for simulating the Galactic microwave sky journal May 2017
A unified pseudo- C ℓ framework journal January 2019
Probing primordial gravitational waves: Ali CMB Polarization Telescope journal February 2018
Methods for pixel domain correction of E B leakage journal July 2019
Measurements of B -mode polarization of the cosmic microwave background from 500 square degrees of SPTpol data journal June 2020
Improved limits on the tensor-to-scalar ratio using BICEP and P l a n c k data journal April 2022
Gravitational lensing effect on cosmic microwave background polarization journal June 1998
High resolution foreground cleaned CMB map from WMAP journal December 2003
Separating E and B types of polarization on an incomplete sky journal July 2010
Framework for performance forecasting and optimization of CMB B -mode observations in the presence of astrophysical foregrounds journal September 2011
Improved Constraints on Primordial Gravitational Waves using Planck , WMAP, and BICEP/ Keck Observations through the 2018 Observing Season journal October 2021
Multidetector multicomponent spectral matching and applications for cosmic microwave background data analysis journal December 2003
Maximum likelihood algorithm for parametric component separation in cosmic microwave background experiments journal January 2009
CMB and SZ effect separation with constrained Internal Linear Combinations: CMB and SZ separation with constrained ILC journal November 2010
A needlet internal linear combination analysis of WMAP 7-year data: estimation of CMB temperature map and power spectrum: A NILC analysis of WMAP 7-year data journal November 2011
Multiresolution internal template cleaning: an application to the Wilkinson Microwave Anisotropy Probe 7-yr polarization data: Multiresolution internal template cleaning journal January 2012
The Python Sky Model 3 software journal November 2021
QUBIC: Exploring the Primordial Universe with the Q&U Bolometric Interferometer journal January 2019
A Measurement of the Degree-scale CMB B -mode Angular Power Spectrum with Polarbear journal July 2020
CMB-S4: Forecasting Constraints on Primordial Gravitational Waves journal February 2022

Figures / Tables (16)

Table 1(p. 9)table Table 1
Figure 1(p. 10)figure Figure 1
Figure 2(p. 11)figure Figure 2
Figure 3(p. 13)figure Figure 3
Figure 4(p. 14)figure Figure 4
Figure 5(p. 15)figure Figure 5
Table 2(p. 16)table Table 2
Figure 6(p. 18)figure Figure 6
Figure 7(p. 19)figure Figure 7
Figure 8(p. 21)figure Figure 8
Figure 9(p. 23)figure Figure 9
Figure 10(p. 24)figure Figure 10
Table 3(p. 24)table Table 3
Figure 11(p. 25)figure Figure 11
Figure 12(p. 27)figure Figure 12
Figure 13(p. 33)figure Figure 13

Similar Records

Optimization of foreground moment deprojection for semi-blind CMB polarization reconstruction
Journal Article · Fri May 31 20:00:00 EDT 2024 · Journal of Cosmology and Astroparticle Physics · OSTI ID:2582266
Multiclustering needlet ILC for CMB B -mode component separation
Journal Article · Thu Aug 31 20:00:00 EDT 2023 · Monthly Notices of the Royal Astronomical Society · OSTI ID:1998200

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
CMB B-modes
ILC
foreground cleaning