The Trispectrum of the 4 Year COBE-DMR data
We propose an estimator for the trispectrum of a scalar random field on a sphere, discuss its geometrical and statistical properties, and outline its implementation. By estimating the trispectrum of the 4 year COBE-DMR data (in HEALPix pixelization) we find new evidence of a non-Gaussian signal asso...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Published: |
2001
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