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Title

A multifrequency method based on the matched multifilter for the detection of point sources in CMB maps

AuthorsLanz, L. F. CSIC ORCID; Herranz, D. CSIC ORCID ; Sanz, J. L.; González-Nuevo, J. CSIC ORCID; López-Caniego, M. CSIC ORCID
KeywordsMethods: data analysis
Techniques: image processing
Surveys
Cosmic microwave background
Radio continuum: galaxies
Issue DateApr-2010
PublisherWiley-Blackwell
Royal Astronomical Society
CitationMonthly Notices of the Royal Astronomical Society 403(4): 2120-2130 (2010)
AbstractIn 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.
Description11 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.
Publisher version (URL)http://dx.doi.org/10.1111/j.1365-2966.2010.16260.x
URIhttp://hdl.handle.net/10261/45756
DOI10.1111/j.1365-2966.2010.16260.x
ISSN0035-8711
E-ISSN1365-2966
Appears in Collections:(IFCA) Artículos

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