BEGIN:VCALENDAR VERSION:2.0 PRODID:-//RLASKEY//CALENDEROUS//EN CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VEVENT DTSTAMP:20191014T075933Z LAST-MODIFIED:20190913T143452Z DTSTART:20190925T201500Z DTEND:20190925T211500Z URL: SUMMARY:Dark Matter in the Era of Gaia DESCRIPTION:Featuring Lina Necib\, Cal Tech\n\nPart of the HET Seminar Seri es.\n\nThe Gaia mission has provided distance and velocity measurements of over a billion stars in the Milky Way\, making it the largest stellar catal og at hand. Simultaneously\, recent developments in cosmological simulation s have made it possible to track stars and dark matter in realistic Milky W ay-like galaxies. In this talk\, I will demonstrate how using cutting-edge simulations and Gaia data in tandem has enabled us to draw the first local map of the cold dark matter phase space distribution in our Galaxy. We find that the velocity distribution of dark matter is out of equilibrium\, sinc e it includes new velocity substructures that originated from previously-un detected galaxy mergers. This has extensive ramifications both for our unde rstanding of the formation of the Milky Way\, and for direct dark matter se arches. LOCATION:PRB 595\, 3 Cummington Mall\, 02215 STATUS:CONFIRMED CLASS:PUBLIC END:VEVENT END:VCALENDAR