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Simulated Milky Way analogues: implications for dark matter indirect searches

Calore, F.; Bozorgnia, N.; Lovell, M.; Bertone, G.; Schaller, M.; Frenk, C.S.; Crain, R.A.; Schaye, J.; Theuns, T.; Trayford, J.W.

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Authors

F. Calore

N. Bozorgnia

M. Lovell

G. Bertone

M. Schaller

R.A. Crain

J. Schaye

J.W. Trayford



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.

Citation

Calore, F., Bozorgnia, N., Lovell, M., Bertone, G., Schaller, M., Frenk, C., …Trayford, J. (2015). Simulated Milky Way analogues: implications for dark matter indirect searches. Journal of Cosmology and Astroparticle Physics, 2015(12), Article 053. https://doi.org/10.1088/1475-7516/2015/12/053

Journal Article Type Article
Acceptance Date Dec 13, 2015
Online Publication Date Dec 29, 2015
Publication Date Dec 29, 2015
Deposit Date Jun 5, 2017
Publicly Available Date Jun 23, 2017
Journal Journal of Cosmology and Astroparticle Physics
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 2015
Issue 12
Article Number 053
DOI https://doi.org/10.1088/1475-7516/2015/12/053

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Copyright 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







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