Sep 12 – 16, 2016
CERN
Europe/Zurich timezone
There is a live webcast for this event.

Determining the Local Dark Matter Density

Sep 16, 2016, 2:00 PM
30m
13/2-005 (CERN)

13/2-005

CERN

90
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Oral Contributions Dark matter (direct detection) Dark matter (direct detection)

Speaker

Hamish Silverwood (University of Amsterdam)

Description

An accurate determination of the local dark matter (DM) density is crucial to interpreting data from direct detection and certain indirect detection experiments, as it is degenerate with the DM-nucleon interaction strength. Here I give an update to our ongoing project to make a determination of the local DM density. Our method uses the positions and velocities of a set of tracer stars extending upwards out of the Milky Way disc, to which we fit a baryon and dark matter mass model using Bayesian nested sampling. The framework we have set up holds the promise of allowing us to minimise the number of assumptions needed, and thus determine the local DM density accurately and with a full quantification of its uncertainty. We have begun to apply our method to data from SDSS, and we also plan to apply it to Gaia data as it becomes available.

Primary author

Hamish Silverwood (University of Amsterdam)

Presentation materials