Speaker
Description
The Planck satellite maps of the polarized sky spanning frequencies from 30 to 353 GHz (i.e. 10 mm to 850 $\mu$m) had a profound impact on our understanding of both cosmology and the interstellar medium. While the submillimeter bands at 545 and 857 GHz (550 and 350 $\mu$m respectively) were not originally designed for polarimetry, the ground calibration campaign suggested a residual polarization sensitivity at the few percent level. At 857 GHz in particular, the polarized Galactic dust emission is sufficiently bright to be detected in Planck data despite the minute polarization sensitivity, provided adequate control of systematic effects is achieved. In this talk, I will present the reconstruction of polarization maps from Planck 857 GHz observations building on the NPIPE reprocessing framework, with particular emphasis on efforts to refine ground calibration measurements and to model and mitigate key systematic effects, such as far sidelobes and bandpass mismatch. I will conclude by presenting the dust properties inferred from our analysis of the polarized 857 GHz emission, including its correlation with the polarized 353 GHz emission, and discuss their implications for foreground removal in cosmic microwave background B-mode searches.
| Would you be interested in presenting a poster if the conference is oversubcribed? | No |
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