Foreground component separation with generalised ILC

Abstract

The 'Internal Linear Combination' (ILC) component separation method has been extensively used to extract a single component, the CMB, from the WMAP multifrequency data. We generalise the ILC approach for separating other millimetre astrophysical emissions. We construct in particular a multidimensional ILC filter, which can be used, for instance, to estimate the diffuse emission of a complex component originating from multiple correlated emissions, such as the total emission of the Galactic interstellar medium. The performance of such generalised ILC methods, implemented on a needlet frame, is tested on simulations of Planck mission observations, for which we successfully reconstruct a low noise estimate of emission from astrophysical foregrounds with vanishing CMB and SZ contamination.

11 pages, 6 figures (2 figures added), 1 reference added, introduction expanded, V2: version accepted by MNRAS

References in corpus (8)

• A full sky, low foreground, high resolution CMB map from WMAP
• Component separation methods for the Planck mission
• Integrated Sachs-Wolfe effect from the cross correlation of WMAP3 year and the NRAO VLA sky survey data: New results and constraints on dark energy
• CMB and SZ effect separation with Constrained Internal Linear Combinations
• Spherical Needlets for CMB Data Analysis
• SZ and CMB reconstruction using Generalized Morphological Component Analysis
• Cleaned Three-Year WMAP CMB Map: Magnitude of the Quadrupole and Alignment of Large Scale Modes
• CMB map derived from the WMAP data through Harmonic Internal Linear Combination

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