HET Seminar has been CANCELLED for today

"Excluding a thin dark matter disk in the Milky Way with Gaia DR1"

Presented by Katelin Schutz, UC Berkeley

Wednesday, April 4, 2018, 2:00 pm — Small Seminar Room, Bldg. 510

If a component of the dark matter has dissipative interactions, it could collapse to form a thin dark disk in our Galaxy coincident with the baryonic disk. It has been suggested that dark disks could explain a variety of observed phenomena, including mass extinction events due to periodic comet impacts. Using the first data release from the Gaia space observatory, I will present the results of a search for a dark disk via its effect on stellar kinematics in the Milky Way. I will discuss our strong new limits that disfavor the presence of a thin dark matter disk and present updated measurements on the total matter density in the solar neighborhood.

Hosted by: Christopher Murphy

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