1.3mm polarization maps of star-forming cores & SFRs

Those same sources also tend to have higher fractional polarizations than the sources with inconsistent large-to-small-scale fields. We interpret this to mean that in at least some cases B-fields play a role in regulating the infall of material all the way down to the ~1000AU scales of protostellar envelopes. (2) Outflows appear to be randomly aligned with B-fields; although, in sources with low polarization fractions there is a hint that outflows are preferentially perpendicular to small-scale B-fields, which suggests that in these sources the fields have been wrapped up by envelope rotation.

(3) Finally, even at ~2.5" resolution we see the so-called polarization hole effect, where the fractional polarization drops significantly near the total intensity peak.