The bispectrum of MAXIMA

Details The bispectrum of MAXIMA The bispectrum of MAXIMA

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003newar..47..815h&link_type=abstract

New Astronomy Reviews, Volume 47, Issue 8-10, p. 815-820.

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We review methods for detecting microwave background non-Gaussianity based on the three-point function in harmonic space - the bispectrum. We concentrate on two methods, one of which is optimised to minimise the error bars on bispectrum estimates, and the other, the pseudo-bispectrum, which is more straighforward to calculate, but which has larger error bars. Application to the MAXIMA dataset shows the map is consistent with Gaussian, with measurements of the weak non-Gaussianity parameter given by the two methods as fNL=1500+/-950 and fNL=2700+/-1650, respectively.

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