Work

Noise power spectrum estimation and fast map making for CMB experiments

Year: 2004

Type: article

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.

Source: Astronomy and Astrophysics

DOI: 10.1051/0004-6361:20034066

Authors: A. Amblard, J.-Ch. Hamilton

Institutions: Collège de France, University of California, Berkeley, Laboratoire de Physique Nucléaire et de Hautes Énergies, Laboratoire de Physique Subatomique et de Cosmologie

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W2068136900

FWCI: 1.566

Cites: 9

Cited by: 10

Related to: 10