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Amplitude-Phase Analysis of Cosmic Microwave Background Maps

Published online by Cambridge University Press:  26 May 2016

D. Novikov ,
P. Naselsky  and
J. Silk
D. Novikov
Affiliation:
Astronomy Department, University of Oxford, NAPL, Keble Road, Oxford, 0X1 3RH, UK; Astro-Space Center of P. N. Lebedev Physical Institute, Profsouznaya 84/32, Moscow, Russia
P. Naselsky
Affiliation:
Theoretical Astrophysics Center, Juliane Maries Vej 30, DK-2100, Copenhagen, Denmark; Rostov State University, Zorge 5, 344090 Rostov-Don, Russia
J. Silk
Affiliation:
Astronomy Department, University of Oxford, NAPL, Keble Road, Oxford, 0X1 3RH, UK

Abstract

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We propose a novel method for the extraction of unresolved point sources from CMB maps. This method is based on the analysis of the phase distribution of the Fourier components for the observed signal and unlike most other methods of denoising does not require any significant assumptions about the expected CMB signal. The aim of our investigation is to show how, using our algorithm, the contribution from point sources can be separated from the resulting signal on all scales.

Type
Part IV: Interpreting CMB Observations
Information
Symposium - International Astronomical Union , Volume 201: New Cosmological Data and the Values of the Fundamental Parameters , 2005 , pp. 134 - 137
Copyright
Copyright © Astronomical Society of the Pacific 2005 

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