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Simulated Milky Way analogues : implications for dark matter indirect searches.

Calore , F. and Bozorgnia, N. and Lovell, M. and Bertone, G. and Schaller, M. and Frenk, C.S. and Crain, R.A. and Schaye, J. and Theuns, T. and Trayford, J.W. (2015) 'Simulated Milky Way analogues : implications for dark matter indirect searches.', Journal of cosmology and astroparticle physics., 2015 (12). 053.

Abstract

We study high-resolution hydrodynamic simulations of Milky Way type galaxies obtained within the "Evolution and Assembly of GaLaxies and their Environments" (EAGLE) project, and identify those that best satisfy observational constraints on the Milky Way total stellar mass, rotation curve, and galaxy shape. Contrary to mock galaxies selected on the basis of their total virial mass, the Milky Way analogues so identified consistently exhibit very similar dark matter profiles inside the solar circle, therefore enabling more accurate predictions for indirect dark matter searches. We find in particular that high resolution simulated haloes satisfying observational constraints exhibit, within the inner few kiloparsecs, dark matter profiles shallower than those required to explain the so-called Fermi GeV excess via dark matter annihilation.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1088/1475-7516/2015/12/053
Publisher statement:This is an author-created, un-copyedited version of an article published in Journal of cosmology and astroparticle physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1475-7516/2015/12/053
Record Created:06 Jun 2017 12:59
Last Modified:23 Jun 2017 14:44

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