UZH-Logo

A dark matter disc in the Milky Way


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.

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.

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.

Citations

3 citations in Web of Science®
3 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

33 downloads since deposited on 03 Mar 2011
5 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Conference or Workshop Item (Paper), refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Language:English
Event End Date:23 October 2009
Deposited On:03 Mar 2011 14:03
Last Modified:20 May 2016 07:19
Publisher:American Institute of Physics
Series Name:AIP Conference Proceedings
Number:1240
ISSN:0094-243X
ISBN:978-0-7354-0786-2
Free access at:Publisher DOI. An embargo period may apply.
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)
Permanent URL: http://doi.org/10.5167/uzh-41490

Download

[img]
Preview
Content: Accepted Version
Filetype: PDF
Size: 491kB
View at publisher
[img]
Preview
Content: Published Version
Filetype: PDF
Size: 353kB

TrendTerms

TrendTerms displays relevant terms of the abstract of this publication and related documents on a map. The terms and their relations were extracted from ZORA using word statistics. Their timelines are taken from ZORA as well. The bubble size of a term is proportional to the number of documents where the term occurs. Red, orange, yellow and green colors are used for terms that occur in the current document; red indicates high interlinkedness of a term with other terms, orange, yellow and green decreasing interlinkedness. Blue is used for terms that have a relation with the terms in this document, but occur in other documents.
You can navigate and zoom the map. Mouse-hovering a term displays its timeline, clicking it yields the associated documents.

Author Collaborations