Fig. 9
Modal bispectrum coefficients 
for the mode expansion (Eq. (65)) obtained from Planck foreground-cleaned maps using hybrid Fourier modes. The different component separation methods, SMICA, NILC and SEVEM exhibit remarkable agreement. The variance from 200 simulated noise maps was nearly constant for each of the 300 modes, with the average ±1σ variation shown in red.
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