Spatially resolved magnetic field structure in the disk of a T Tauri star

  title={Spatially resolved magnetic field structure in the disk of a T Tauri star},
  author={Ian W. Stephens and Leslie W. Looney and Woojin Kwon and Manuel Fern{\'a}ndez-L{\'o}pez and A. Meredith Hughes and Lee G. Mundy and Richard M. Crutcher and Zhi-Yun Li and Ramprasad Rao},
Magnetic fields in accretion disks play a dominant part during the star formation process but have hitherto been observationally poorly constrained. Field strengths have been inferred on T Tauri stars and possibly in the innermost part of their accretion disks, but the strength and morphology of the field in the bulk of a disk have not been observed. Spatially unresolved measurements of polarized emission (arising from elongated dust grains aligned perpendicularly to the field) imply average… 

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