Non-linear Data Analysis on the Sphere

The Quest for Anomalies in the Cosmic Microwave Background

Nonfiction, Science & Nature, Science, Physics, Mathematical Physics, Cosmology
Cover of the book Non-linear Data Analysis on the Sphere by Gregor Rossmanith, Springer International Publishing
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Author: Gregor Rossmanith ISBN: 9783319003092
Publisher: Springer International Publishing Publication: April 23, 2013
Imprint: Springer Language: English
Author: Gregor Rossmanith
ISBN: 9783319003092
Publisher: Springer International Publishing
Publication: April 23, 2013
Imprint: Springer
Language: English

This work deals with the search for signatures of non-Gaussianities in the cosmic microwave background (CMB). Probing Gaussianity in the CMB addresses one of the key questions in modern cosmology because it allows us to discriminate between different models of inflation, and thus concerns a fundamental part of the standard cosmological model.
    The basic goal here is to adapt complementary methods stemming from the field of complexity science to CMB data analysis. Two key concepts, namely the method of surrogates and estimators for local scaling properties, are applied to CMB data analysis.
    All results show strong non-Gaussianities and pronounced asymmetries. The consistency of the full sky and cut sky results shows convincingly for the first time that the influence of the Galactic plane is not responsible for these deviations from Gaussianity and isotropy. The findings seriously call into question predictions of isotropic cosmologies based on the widely accepted single field slow roll inflation model.

View on Amazon View on AbeBooks View on Kobo View on B.Depository View on eBay View on Walmart

This work deals with the search for signatures of non-Gaussianities in the cosmic microwave background (CMB). Probing Gaussianity in the CMB addresses one of the key questions in modern cosmology because it allows us to discriminate between different models of inflation, and thus concerns a fundamental part of the standard cosmological model.
    The basic goal here is to adapt complementary methods stemming from the field of complexity science to CMB data analysis. Two key concepts, namely the method of surrogates and estimators for local scaling properties, are applied to CMB data analysis.
    All results show strong non-Gaussianities and pronounced asymmetries. The consistency of the full sky and cut sky results shows convincingly for the first time that the influence of the Galactic plane is not responsible for these deviations from Gaussianity and isotropy. The findings seriously call into question predictions of isotropic cosmologies based on the widely accepted single field slow roll inflation model.

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