A high-significance detection of non-Gaussianity in the Wilkinson Microwave Anisotropy Probe 1-yr data using directional spherical wavelets

@article{McEwen2004AHD,
  title={A high-significance detection of non-Gaussianity in the Wilkinson Microwave Anisotropy Probe 1-yr data using directional spherical wavelets},
  author={Jason D. McEwen and M. P. Hobson and Anthony N. Lasenby and Daniel J. Mortlock},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2004},
  volume={359},
  pages={1583-1596}
}
A directional spherical wavelet analysis is performed to examine the Gaussianity of the Wilkinson Microwave Anisotropy Probe (WMAP) 1-yr data. Such an analysis is facilitated by the introduction of a fast directional continuous spherical wavelet transform. The directional nature of the analysis allows us to probe orientated structure in the data. Significant deviations from Gaussianity are detected in the skewness and kurtosis of spherical elliptical Mexican hat and real Morlet wavelet… 

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