 |
 |
 |
|
|
|
| HAL : in2p3-00709890, version 1 |
| Code Bibliographique ADS : 2011MNRAS.418..467R |
| DOI : 10.1111/J.1365-2966.2011.19497.X |
| Fiche détaillée |  Récupérer au format |
 |
| Monthly Notices of the Royal Astronomical Society 418 (2011) 467-476 |
|
|
|
|
| Foreground component separation with generalized Internal Linear Combination |
|
|
| M. Remazeilles1J. Delabrouille1J.-F. Cardoso1, 2 |
|
|
| (11/2011) |
|
|
|
| The 'Internal Linear Combination' (ILC) component separation method has been extensively used to extract a single component, the cosmic microwave background (CMB), from the WMAP multifrequency data. We generalize 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 generalized 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 Sunyaev-Zel'dovich contamination. |
|
|
|
|
|
|
|
|
|
|
|
| 1 : | APC - AstroParticule et Cosmologie |
|
|
| 2 : | LTCI - Laboratoire Traitement et Communication de l'Information [Paris] |
|
|
|
|
|
|
|
|
|
| APC - ADAMIS |
|
|
|
|
| Thème(s) | : | Physique/Astrophysique/Cosmologie et astrophysique extra-galactique Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique |
|
|
| methods: data analysis – ISM: general – cosmic background radiation |
|
| in2p3-00709890, version 1 | |
| http://hal.in2p3.fr/in2p3-00709890 | |
| oai:hal.in2p3.fr:in2p3-00709890 | |
| Contributeur : J. Delabrouille | |
| Soumis le : Mardi 19 Juin 2012, 16:14:29 | |
| Dernière modification le : Mercredi 20 Juin 2012, 17:04:56 | |
