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Título: | A multifrequency method based on the matched multifilter for the detection of point sources in CMB maps |
Autor: | Lanz, L. F. CSIC ORCID; Herranz, D. CSIC ORCID ; Sanz, J. L.; González-Nuevo, J. CSIC ORCID; López-Caniego, M. CSIC ORCID | Palabras clave: | Methods: data analysis Techniques: image processing Surveys Cosmic microwave background Radio continuum: galaxies |
Fecha de publicación: | abr-2010 | Editor: | Wiley-Blackwell Royal Astronomical Society |
Citación: | Monthly Notices of the Royal Astronomical Society 403(4): 2120-2130 (2010) | Resumen: | In this work, we deal with the problem of simultaneous multifrequency detection of extragalactic point sources in maps of the Cosmic Microwave Background. We developed a linear filtering technique that takes into account the spatial and the cross-power spectrum information at the same time. By using realistic simulations, we compared this technique with the monofrequency matched filter in terms of completeness, reliability, flux and spectral index accuracy. The multifrequency method outperforms the matched filter in all the studied cases in this work. | Descripción: | 11 páginas, 6 figuras, 1 tabla.-- El Pdf del artículo es la versión pre-print: arXiv:0907.0603v1.-- Trabajo presentado al "Spanish Astrophysics VI, Proceedings of the IX Scientific Meeting of the Spanish Astronomical Society (SEA)" celebrado en Madrid del 13 al 17 de septiembre de 2010. | Versión del editor: | http://dx.doi.org/10.1111/j.1365-2966.2010.16260.x | URI: | http://hdl.handle.net/10261/45756 | DOI: | 10.1111/j.1365-2966.2010.16260.x | ISSN: | 0035-8711 | E-ISSN: | 1365-2966 |
Aparece en las colecciones: | (IFCA) Artículos |
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0907.0603v1.pdf | 492,06 kB | Adobe PDF | Visualizar/Abrir |
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