University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Friday, October 4th 2019
12:30 pm:
Speaker: Cristina Mondino, NYU
Subject: Constraining Dark Matter Substructures with Astrometric Weak Lensing

Gravitational probes of Dark Matter (DM) structures on sub-galactic scales constitute an interesting tool to shed light on DM properties in a model-independent way. It has been recently pointed out that variable weak gravitational lensing effects on the motion of background stars can be used to probe non-luminous structures inside the Milky Way halo. I will describe one possible detection strategy that relies on velocity templates, and targets collapsed DM structures in the mass range from million to billion solar masses. The data analysis techniques will be discussed in detail with an application to the second data release of Gaia.

Faculty Host: Maxim Pospelov

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