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The Local Theory of the Cosmic Skeleton
D. Pogosyan, C. Pichon, C. Gay +4
The local theory of the critical lines of 2D and 3D Gaussian fields that underline the cosmic structures is presented. In the context of cosmological matter distribution the subset…
A full sky, low foreground, high resolution CMB map from WMAP
J. Delabrouille, J. -F. Cardoso, M. Le Jeune +3
The WMAP satellite has made available high quality maps of the sky in five frequency bands ranging from 22 to 94 GHz, with the main scientific objective of studying the anisotropie…
Component separation methods for the Planck mission
S. M. Leach, J. -F. Cardoso, C. Baccigalupi +27
The Planck satellite will map the full sky at nine frequencies from 30 to 857 GHz. The CMB intensity and polarization that are its prime targets are contaminated by foreground emis…
Component separation with flexible models. Application to the separation of astrophysical emissions
Jean-Francois Cardoso, Maude Martin, Jacques Delabrouille +2
This paper offers a new point of view on component separation, based on a model of additive components which enjoys a much greater flexibility than more traditional linear componen…
Diffuse source separation in CMB observations
J. Delabrouille, J. -F. Cardoso
We review issues and methods for diffuse component separation in the context of Cosmic Microwave Background observations. The revised version contains a paragraph on FastICA and it…
The CMB temperature power spectrum from an improved analysis of the Archeops data
M. Tristram, G. Patanchon, J. F. Macias-Perez +47
We present improved results on the measurement of the angular power spectrum of the Cosmic Microwave Background (CMB) temperature anisotropies using the data from the last Archeops…
CMB and foregrounds in WMAP first year data
G. Patanchon, J. -F. Cardoso, J. Delabrouille +1
We perform a blind multi-component analysis of the WMAP 1 year foreground cleaned maps using SMICA (Spectral Matching Independent Component Analysis). We provide a new estimate of…
Source separation on astrophysical data sets from the WMAP satellite
G. Patanchon, J. Delabrouille, J. -F. Cardoso
This paper presents and discusses the application of blind source separation to astrophysical data obtained with the WMAP satellite. Blind separation permits to identify and isolat…
Component separation for Cosmic Microwave Background data: a blind approach based on spectral diversity
G. Patanchon, H. Snoussi, J. F. Cardoso +1
We present a blind multi-detector multi-component spectral matching method for all sky observations of the cosmic microwave background, working on the spherical harmonics basis. Th…
Blind separation of noisy Gaussian stationary sources. Application to cosmic microwave background imaging
Jean-Francois Cardoso, Hichem Snoussi, Jacques Delabrouille +1
We present a new source separation method which maximizes the likelihood of a model of noisy mixtures of stationary, possibly Gaussian, independent components. The method has been…