Fig. 13.

Polarization fraction p (top panel), and polarization angle dispersion function 𝒮 (bottom panel) coloured by the dust temperature, Td, as a function of the column density NH. We note that the resolution of the data used here is 40′. Estimates of 𝒮 are nevertheless not biased, because only lines of sight with NH ≥ 1021 cm−2 are considered.
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