Pheno & Vino Seminar

Excluding a Thin Dark Matter Disk in the Milky Way with Gaia DR1

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.

Featuring

Kaitlyn Schutz

Speaker Affiliation

University of California, Berkeley

Affiliation

Natural Sciences, Natural Sciences

Date & Time
November 14, 2017 | 4:005:00pm

Location

Jadwin Hall, Room 303