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

Abstract: 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.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Lanz L.F., Herranz D., Sanz J.L., González-Nuevo J., López-Caniego M.,

 Fuente: Monthly Notices of the Royal Astronomical Society, 2010, 403(4), 2120-2130

Editorial: Oxford University Press

 Año de publicación: 2010

Nº de páginas: 11

Tipo de publicación: Artículo de Revista

 DOI: 10.1111/j.1365-2966.2010.16260.x

ISSN: 0035-8711,1365-2966

 Proyecto español: ESP2004-07067-C03-01

Url de la publicación: https://doi.org/10.1111/j.1365-2966.2010.16260.x

Autoría

LUIS FERNANDO LANZ OCA

JOSE LUIS SANZ ESTEVEZ

GONZÁLEZ-NUEVO, J.

MARCOS LOPEZ-CANIEGO ALCARRIA