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Estimation of Signal and Noise Parameters from CMB Polarization Observations

Published online by Cambridge University Press:  26 May 2016

P. Naselsky ,
D. Novikov ,
I. Novikov  and
J. Silk
P. Naselsky
Affiliation:
1Theoretical Astrophysics Center, Copenhagen, Denmark 2Rostov State University, Rostov-Don, Russia
D. Novikov
Affiliation:
3Astronomy Department, University of Oxford, UK 4Astro-Space Center of P. N. Lebedev Physical Institute, Moscow, Russia
I. Novikov
Affiliation:
1Theoretical Astrophysics Center, Copenhagen, Denmark 4Astro-Space Center of P. N. Lebedev Physical Institute, Moscow, Russia 5Astronomical University Observatory, Copenhagen, Denmark 6NORDITA, Copenhagen, Denmark
J. Silk
Affiliation:
3Astronomy Department, University of Oxford, UK

Abstract

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We propose a technique for determination of the spectral parameters of the cosmological signal and pixel noise using observational data on CMB polarization without any additional assumptions. We introduce the notion of so called crossing points in the observational maps and derive the theoretical dependence of the total number of crossing points at different level of the polarization. Finally, we use the statistics of the signal in the vicinities of the singular points, where the polarization of the pure CMB vanishes to correct the final result.

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. 126 - 133
Copyright
Copyright © Astronomical Society of the Pacific 2005 

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