ALMA Observations of Magnetic Field Structure in NGC1333 IRAS4A Shih-Ping Lai NTHU, Hsinchu, TW
We present a compreheansive picture of the magnetic field structure around the Class 0 source NGC1333 IRAS4A with polarization observations of ALMA at 870μm and 2mm. Our results show that the magnetic field morphology is hour-glass shape at circumbinary scale, but turns into toroidal in the circumbinary co-plane, which is consistent with the theortical expectation for star formation with strong magnetic field.
Caption: The polarization detections toward NGC1333 IRAS4A at 870 μm (black segments) and 2mm (white segments) with highest angular resolution ever reached (~0.08"). The color scale shows the polarization percentage at 870μm. We will present the derived B-field structure in the conference.
Collaborators: T.-C. Ching, NAOC, CN C.-L. Ko, NTHU/ASIAA, TW H.-y. Liu, ASIAA, TW J.M. Girart, CSIC-IEEC, ES R. Rao, ASIAA, TW	Key publication Suggested Session: Magnetic Fields