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Measuring the local dark matter density


Garbari, S; Lake, G; Read, J (2009). Measuring the local dark matter density. In: Hunting for the Dark: the Hidden Side of Galaxy Formation, Qawra, Malta, 19 October 2009 - 23 October 2009, 411-412.

Abstract

We examine systematic problems in determining the local matter density from the vertical motion of stars, i.e. the ``Oort limit''. Using collisionless simulations and a Monte Carlo Markov Chain technique, we determine the data quality required to detect local dark matter at its expected density. We find that systematic errors are more important than observational errors and apply our technique to Hipparcos data to reassign realistic error bars to the local dark matter density.

Abstract

We examine systematic problems in determining the local matter density from the vertical motion of stars, i.e. the ``Oort limit''. Using collisionless simulations and a Monte Carlo Markov Chain technique, we determine the data quality required to detect local dark matter at its expected density. We find that systematic errors are more important than observational errors and apply our technique to Hipparcos data to reassign realistic error bars to the local dark matter density.

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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
Scopus Subject Areas:Physical Sciences > General Physics and Astronomy
Language:English
Event End Date:23 October 2009
Deposited On:03 Mar 2011 13:30
Last Modified:15 Apr 2021 14:10
Publisher:American Institute of Physics
Series Name:AIP Conference Proceedings
Number:1240
ISSN:0094-243X
ISBN:978-0-7354-0786-2
OA Status:Green
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1063/1.3458549
Related URLs:http://arxiv.org/abs/1001.1038

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