2003/02/05 by G. Patanchon, Patanchon, G., Hichem Snoussi +8
Computer Science · Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Cosmic Phenomena #Blind Source Separation Techniques #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Radio Astronomy Observations and Technology #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0302078
6 pages, 3 figures, extended version of a paper presented at the PSIP03 conference, Grenoble, January 2003
arxiv created 2003/02/05 · openalex publication_date 2003/02/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present a blind multi-detector multi-component spectral matching method\nfor all sky observations of the cosmic microwave background, working on the\nspherical harmonics basis. The method allows to estimate on a set of\nobservation maps the power spectra of various components present in CMB data,\ntheir contribution levels in each detector and the noise levels. The method\naccounts for the instrumental effect of beam convolution. We have implemented\nthe method on all sky Planck simulations containing five components and white\nnoise, including beam smoothing effects.\n