Clustering of DIRBE Light and IR Background

Astronomy and Astrophysics – Astrophysics

Scientific paper

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7 pages postcript, talk at "Unveiling the cosmic infrared background" workshop, College Park, MD

Scientific paper

We outline a new method for estimating the cosmic infrared background using the spatial and spectral correlation properties of infrared maps. The cosmic infrared background from galaxies should have a minimum fluctuation of the order of 10\% on angular scales of the order of 1\deg. We show that a linear combination of maps at different wavelengths can greatly reduce the fluctuations produced by foreground stars, while not eliminating the fluctuations of the background from high redshift galaxies. The method is potentially very powerful, especially at wavelengths where the foreground is bright but smooth.

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