Noise power spectrum estimation and fast map making for CMB experiments

Abstract

We present a method designed to estimate the noise power spectrum in the time domain for CMB experiments. The noise power spectrum is extracted from the time ordered data avoiding the contamination coming from sky signal and accounting the pixellisation of the signal and the projection of the noise when making intermediate sky projections. This method is simple to implement and relies on Monte-Carlo simulations, it runs on a simple desk computer. We also propose a trick for filtering data before making coadded maps in order to avoid ringing due to the presence of signal in the timelines. These algorithms were succesfully tested on Archeops data.

5 pages, 6 figures, submitted to Astronomy and Astrophysics

References in corpus (3)

• A Full-Sky H-alpha Template for Microwave Foreground Prediction
• Cosmological constraints from Archeops
• The Cosmic Microwave Background Anisotropy Power Spectrum measured by Archeops

Cited by in corpus (7)

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• The CMB temperature power spectrum from an improved analysis of the Archeops data
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• Archeops In-flight Performance, Data Processing and Map Making
• Data analysis methods for the cosmic microwave background
• Spectral Indications of thermal Sunyaev-Zel'dovich Effect in Archeops and WMAP Data