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Constraining a Thin Dark Matter Disk with G a i a

Safdi, Benjamin R.; Schutz, Katelin; Lin, Tongyan +1 more

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 sea…