Constraining a Thin Dark Matter Disk with Gaia.

  title={Constraining a Thin Dark Matter Disk with Gaia.},
  author={Katelin Schutz and Tongyan Lin and Benjamin R. Safdi and Chih-Liang Wu},
  journal={Physical review letters},
  volume={121 8},
If a component of the dark matter has dissipative interactions, it could collapse to form a thin dark disk in our Galaxy that is coplanar with the baryonic disk. It has been suggested that dark disks could explain a variety of observed phenomena, including periodic comet impacts. Using the first data release from the Gaia space observatory, we search for a dark disk via its effect on stellar kinematics in the Milky Way. Our new limits disfavor the presence of a thin dark matter disk, and we… 

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