Oral Presentation

ALMA Dust Polarization Observations of Nearly Edge-On Protostellar disks

Author(s): Chin-Fei Lee (ASIAA)

Presenter: Chin-Fei Lee (ASIAA)

Polarized emission is detected in two young nearly edge-on protostellar disks in 343 GHz continuum at ~50 au resolution
with Atacama Large Millimeter/submillimeter Array. In both disks, the polarization orientations in the nearside are almost perpendicular to the disk major axis, suggesting a presence of
toroidal field around the outer edges of the disks. In the more resolved disk, the farside of the disk is also seen, the polarization orientations there are bended around the jet axis. These orientations, when rotated by 90 degree, become
parallel to the jet axis and thus may suggest a presence of poloidal field in the disk. I will discuss these results in the talk.