Planck 2015 results
Free Access

Fig. 46

image

Stacked Qr image around temperature hot spots selected above the null threshold (ν = 0) in the SMICA sky map. The left panel corresponds to the observed data and the right panel shows the NFEA. The image units are  μK. The headless vectors (black solid lines) are the polarization directions for stacked Qstack, Ustack. The lengths of the headless vectors are proportional to the polarization amplitude Pstack.

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