Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 12, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2015/12/053
Keywords
dark matter theory; dark matter simulations; hydrodynamical simulations; rotation curves of galaxies
Funding
- European Research Council through the ERC starting grant WIMPs Kairos
- BIS National E-infrastructure capital [ST/K00042X/1]
- STFC capital grant [ST/H008519/1]
- STFC DiRAC Operations grant [ST/K003267/1]
- Durham University
- Dutch Ministry of Education, Culture and Science (OCW)
- Science and Technology Facilities Council [ST/F001166/1]
- European Research Council [GA 267291, GA 278594]
- Interuniversity Attraction Poles Programme initiated by the Belgian Science Policy Office [AP P7/08 CHARM]
- STFC [ST/I00162X/1, ST/L00075X/1, ST/K00042X/1, ST/M007006/1, ST/H008519/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/K00042X/1, ST/M007006/1, ST/I00162X/1, ST/H008519/1, ST/L00075X/1] Funding Source: researchfish
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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.
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