Planck 2018 results
Free Access

Fig. 6.


Generalized resonance-model significance surveyed over the Modal 2 frequency range with the uppermost panels for the constant resonance model (Eq. 12), showing T-only (left) and T+E (right) results, then below this the equilateral resonance model (Eq. (13)), followed by the flattened model (Eq. (14)) with the bottom panels, representing the local resonance model with a squeezed envelope. These models have been investigated using Planck temperature data to max = 2000 and polarization data to max = 1500, with the Planck component-separation methods SMICA (blue), SEVEM (orange), NILC (green), and Commander (red). These results are broadly consistent with those found previously (PCNG15), with some broad peaks of moderate significance emerging in both the equilateral and flattened resonance models, somewhat enhanced by including polarization data (upper middle and lower middle right panels).

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