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The Robustness of Phase Mapping as a Non-Gaussianity Test
Author(s) -
L.-Y Chiang,
Pavel Naselsky,
Peter Coles
Publication year - 2004
Publication title -
the astrophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.376
H-Index - 489
eISSN - 1538-4357
pISSN - 0004-637X
DOI - 10.1086/382211
Subject(s) - robustness (evolution) , cosmic microwave background , non gaussianity , gaussian , cosmic cancer database , pattern recognition (psychology) , statistical hypothesis testing , computer science , statistical physics , physics , algorithm , artificial intelligence , mathematics , astrophysics , statistics , optics , biology , biochemistry , anisotropy , quantum mechanics , gene
The identification and extraction of non-Gaussian signals is one of the maincosmological challenges facing future experimental measurements of the cosmicmicrowave background temperature pattern. We present a generalized statisticalmeasure based on a novel technique representation of Fourier phases using thereturn map. We show that this method is both robust and powerful in comparison,for example, with morphological measures

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