Noise power spectrum estimation and fast map making for CMB experiments

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...

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Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2004-04, Vol.417 (3), p.1189-1194
Hauptverfasser:	Amblard, A., Hamilton, J.-Ch
Format:	Artikel
Sprache:	eng
Schlagworte:	Astrophysics cosmic microwave background Cosmology and Extra-Galactic Astrophysics cosmology: observations large-scale structure of the Universe methods: numerical Physics Sciences of the Universe
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container_title	Astronomy and astrophysics (Berlin)
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creator	Amblard, A. Hamilton, J.-Ch
description	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.
doi_str_mv	10.1051/0004-6361:20034066
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subjects	Astrophysics cosmic microwave background Cosmology and Extra-Galactic Astrophysics cosmology: observations large-scale structure of the Universe methods: numerical Physics Sciences of the Universe
title	Noise power spectrum estimation and fast map making for CMB experiments
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