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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, CS, Crain, RA, Schaye, J, Theuns, T and Trayford, JW (2015) Simulated Milky Way analogues: implications for dark matter indirect searches. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2015 (12). pp. 1-32. ISSN 1475-7516

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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
Uncontrolled Keywords: 0201 Astronomical And Space Sciences, 0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics
Subjects: Q Science > QB Astronomy
Divisions: Astrophysics Research Institute
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Date Deposited: 12 Feb 2016 14:29
Last Modified: 04 Sep 2021 13:25
DOI or ID number: 10.1088/1475-7516/2015/12/053
URI: https://researchonline.ljmu.ac.uk/id/eprint/2931
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