Measuring the local dark matter density
Astrophysics of Galaxies
2011-06-08 v2
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.
Cite
@article{arxiv.1001.1038,
title = {Measuring the local dark matter density},
author = {Silvia Garbari and George Lake and Justin I. Read},
journal= {arXiv preprint arXiv:1001.1038},
year = {2011}
}
Comments
3 pages, 1 figure, to be published in "Hunting for the Dark: The Hidden Side of Galaxy Formation", Malta, 19-23 Oct. 2009, eds. V.P. Debattista & C.C. Popescu, AIP Conf. Ser