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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-41490

Read, J I; Debattista, V P; Agertz, O; Mayer, L; Bruch, T; Governato, F; Baudis, L; Brooks, A M; Lake, G (2009). A dark matter disc in the Milky Way. In: Hunting for the Dark: the Hidden Side of Galaxy Formation, Qawra, Malta, 19 October 2009 - 23 October 2009, 391-394.

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Abstract

Dark matter direct detection experiments need to know the local phase space density of dark matter fdm(r,v,t) in order to derive dark matter particle properties. To date, calculations for fdm(r,v,t) have been based on simulations that model the dark matter alone. Here we include the influence of the baryonic matter. We find that a star/gas disc at high redshift (z~1) causes merging satellites to be preferentially dragged towards the disc plane. This results in an accreted dark matter disc that contributes ~0.25-1 times the non-rotating halo density at the Solar position. We discuss the impact of the dark disc on dark matter direct detection experiments, and how we might be able to detect it in future Galactic surveys.

Item Type:Conference or Workshop Item (Paper), not refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Theoretical Physics
DDC:530 Physics
Language:English
Event End Date:23 October 2009
Deposited On:03 Mar 2011 15:03
Last Modified:28 Jan 2014 15:46
Publisher:American Institute of Physics
Series Name:AIP Conference Proceedings
Number:1240
ISSN:0094-243X (P) 1551-7616 (E)
ISBN:978-0-7354-0786-2
Publisher DOI:10.1063/1.3458542
Related URLs:http://arxiv.org/abs/0901.2938
http://www.zora.uzh.ch/16562/
http://www.star.uclan.ac.uk/malta2009/index.shtml (Organisation)
Citations:Web of Science®
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