1998/10/15 by M. P. Hobson, R. B. Barreiro, L. Toffolatti +4 · 1 citation
Physics and Astronomy · #Cosmic background radiation #Cosmic microwave background #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Galaxy #Microwave #Planck #Point (geometry) #Point source #Radio Astronomy Observations and Technology #Satellite #astro-ph
paper · pdf · doi:10.1046/j.1365-8711.1999.02546.x
12 pages, 9 figures, submitted to MNRAS
arxiv created 1998/10/15 · openalex publication_date 1999/06/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the effect of extragalactic point sources on satellite observations of the cosmic microwave background (CMB). In order to separate the contributions resulting from different foreground components, a Fourier-space maximum-entropy method is applied to simulated observations by the Planck Surveyor satellite. In addition to point sources, the simulations include emission from the CMB and the kinetic and thermal Sunyaev-Zel'dovich effects from galaxy clusters, as well as Galactic dust, free-free and synchrotron emission. We find that the main input components are faithfully recovered and, in particular, that the quality of the CMB reconstruction is only slightly reduced by the presence of point sources. In addition, we find that it is possible to recover accurate point source catalogues at each of the Planck Surveyor observing frequencies.