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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…
CMB data analysis and sparsity
P. Abrial, Y. Moudden, J. -L. Starck +3
The statistical analysis of the soon to come Planck satellite CMB data will help set tighter bounds on major cosmological parameters. On the way, a number of practical difficulties…
FASTLens (FAst STatistics for weak Lensing) : Fast method for Weak Lensing Statistics and map making
S. Pires, J. -L. Starck, A. Amara +3
With increasingly large data sets, weak lensing measurements are able to measure cosmological parameters with ever greater precision. However this increased accuracy also places gr…
The reversal of the star formation-density relation in the distant universe
D. Elbaz, E. Daddi, D. Le Borgne +11
We study the relationship between the local environment of galaxies and their star formation rate (SFR) in the Great Observatories Origins Deep Survey, GOODS, at z~1, from ultradee…
Dark matter maps reveal cosmic scaffolding
Richard Massey, Jason Rhodes, Richard Ellis +17
Ordinary baryonic particles (such as protons and neutrons) account for only one-sixth of the total matter in the Universe. The remainder is a mysterious "dark matter" component, wh…
Morphology of the galaxy distribution from wavelet denoising
V. J. Martinez, J. -L. Starck, E. Saar +4
We have developed a method based on wavelets to obtain the true underlying smooth density from a point distribution. The goal has been to reconstruct the density field in an optima…