Non-Gaussian likelihood function and COBE data

• Verfasst von: Amendola, Luca [VerfasserIn]
• Titel: Non-Gaussian likelihood function and COBE data
• Verf.angabe: Luca Amendola
• Umfang: 7 S.
• Fussnoten: Gesehen am 20.11.2017
• Titel Quelle: Enthalten in: Royal Astronomical Society: Monthly notices of the Royal Astronomical Society
• Jahr Quelle: 1996
• Band/Heft Quelle: 283(1996), 3, S. 983-989
• ISSN Quelle: 1365-2966
• DOI: doi:10.1093/mnras/283.3.983
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565509072

Abstract

We generalize the maximum likelihood method to non-Gaussian distribution functions by means of the multivariate Edgeworth expansion. We stress the potential interest in this technique for all those cosmological problems in which the determination of a non-Gaussian signature is relevant, e.g. in the analysis of large-scale structure and cosmic microwave background. The application to the COBE two-year correlation function reveals a significant displacement of the parameter confidence region with respect to the Gaussian case.