Non-Gaussian likelihood function and COBE data

Details Non-Gaussian likelihood function and COBE data Non-Gaussian likelihood function and COBE data

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.283..983a&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 283, Issue 3, pp. 983-989.

Astronomy and Astrophysics

Astronomy

15

Methods: Statistical, Large-Scale Structure Of Universe

Scientific paper

We generalize the maximum likelihood method to non-Gaussian distribution functions by means of the multivariate Edgworth 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.

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