Madam - a map-making method for CMB experiments

Details Madam - a map-making method for CMB experiments Madam - a map-making method for CMB experiments

2004-12-20

arxiv.org/abs/astro-ph/0412517v1

Mon.Not.Roy.Astron.Soc. 360 (2005) 390

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1111/j.1365-2966.2005.09055.x

We present a new map-making method for CMB measurements. The method is based on the destriping technique, but it also utilizes information about the noise spectrum. The low-frequency component of the instrument noise stream is modelled as a superposition of a set of simple base functions, whose amplitudes are determined by means of maximum-likelihood analysis, involving the covariance matrix of the amplitudes. We present simulation results with $1/f$ noise and show a reduction in the residual noise with respect to ordinary destriping. This study is related to \Planck LFI activities.

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