The 4 YearCOBENormalization and Large‐Scale Structure | Zendy

Emory F. Bunn | Zendy; Martin White | Zendy

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The 4 YearCOBENormalization and Large‐Scale Structure

Author(s) -

Emory F. Bunn,

Martin White

Publication year - 1997

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 - 10.1086/303955

Subject(s) - normalization (sociology) , goodness of fit , statistical physics , range (aeronautics) , mathematics , statistics , econometrics , physics , engineering , aerospace engineering , sociology , anthropology

We present an analysis of the four-year data from the COBE DMR experiment. Weuse a Karhunen-Loeve expansion of the pixel data to calculate the normalizationand goodness-of-fit of a range of models of structure formation. This techniqueproduces unbiased normalization estimates and is capable of determining thenormalization of any particular model with a statistical uncertainty of 7%. Wepresent a parameterization of the normalization and likelihood function whichsummarizes our results for a wide range of models. We use the COBEnormalization to compute small-scale fluctuation amplitudes for a variety ofmodels and discuss the implications of these results for theories oflarge-scale structure.Comment: LaTeX, 22 pages. Uses aaspp4.sty. 18 PostScript figures included. Final version, accepted to the Astrophysical Journal. Numerous small changse have been made, but all the main results are unchange

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