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Interpreting CMB anisotropy observations: Trying to tell the truth with statistics

 

作者: Eric Gawiser,  

 

期刊: AIP Conference Proceedings  (AIP Available online 1901)
卷期: Volume 586, issue 1  

页码: 202-207

 

ISSN:0094-243X

 

年代: 1901

 

DOI:10.1063/1.1419554

 

出版商: AIP

 

数据来源: AIP

 

摘要:

A conflict has been reported between the baryon density inferred from deuterium observations and that found from recent CMB observations by BOOMERanG and MAXIMA. Despite the flurry of papers that attempt to resolve this conflict by adding new physics to the early universe, we will show that it can instead be resolved via a more careful usage of statistics. Indeed, the Bayesian analyses that produce this conflict are by their nature poorly suited for drawing this type of conclusion. A properly defined frequentist analysis can address this question directly and appears not to find a conflict. Finally, a conservative accounting of systematic uncertainties in measuring the deuterium abundance could reduce what is nominally a 3&sgr; conflict to 1&sgr;. ©2001 American Institute of Physics.

 

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