Foreground contamination around the North Celestial Pole

A. Kogut; Angelica de Oliveira-Costa; C. Barth Netterfield; Edward J. Wollack; Lyman A. Page; Mark J. Devlin

arxiv: astro-ph/9705090 · v1 · submitted 1997-05-12 · 🌌 astro-ph

Foreground contamination around the North Celestial Pole

Angelica de Oliveira-Costa , A. Kogut , Mark J. Devlin , C. Barth Netterfield , Lyman A. Page , Edward J. Wollack This is my paper

classification 🌌 astro-ph

keywords foregroundbackgroundcontaminationpowersaskatoonaroundcelestialcorrelation

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We cross-correlate the Saskatoon Q-Band data with different spatial template maps to quantify possible foreground contamination. We detect a correlation with the Diffuse Infrared Background Experiment (DIRBE) 100 microm map, which we interpret as being due to Galactic free-free emission. Subtracting this foreground power reduces the Saskatoon normalization of the Cosmic Microwave Background (CMB) power spectrum by roughly 2%.

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