Submillimeter Polarimetry of Class 0 Protostars: Constraints on Magnetized Outflow Models

摘要

Polarized 800 μm emission from magnetically aligned dust grains has been detected in five protostars. Previously, only two such detections had been made. All of these protostellar sources have associated bipolar outflows and presumably also circumstellar disks. We find that the angle between the deduced magnetic field direction and the outflow axis, △θ, appears to be correlated with the angle between the line of sight to the observer and the outflow direction, θ_los. If the outflow is in the plane of the sky, then the deduced magnetic field tends to be perpendicular to the outflow, and if the outflow is angled toward the observer, then the magnetic field tends to lie parallel to the outflow.