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Remnants of Galactic subhalos and their impact on indirect dark matter searches

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arxiv 1905.02008 v2 pith:VAXPGEUC submitted 2019-05-06 astro-ph.CO astro-ph.GAhep-ph

Martin Stref , Thomas Lacroix , Julien Lavalle This is my paper · ORCID
classification astro-ph.COastro-ph.GAhep-ph
keywords darkmatterfactorimpactresultssearchessubhalosabundance
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Dark matter subhalos, predicted in large numbers in the cold dark matter scenario, should have an impact on particle dark matter searches. Recent results show that tidal disruption of these objects in computer simulations is over-efficient due to numerical artifacts and resolution effects. Accounting for these results, we re-estimate the subhalo abundance in the Milky Way using semi-analytical techniques. In particular, we show that the boost factor for gamma rays and cosmic-ray antiprotons is increased by roughly a factor of two.

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  1. Detecting dark matter sub-halos in the Galactic plane with the Cherenkov Telescope Array Observatory

    astro-ph.HE 2025-01 conditional novelty 6.0 of 10

    CTAO's Galactic Plane Survey could detect the brightest Milky Way dark matter sub-halo at 5-sigma for TeV-scale WIMPs annihilating to b-quarks with cross section about 3e-25 cm^3/s, roughly ten times the canonical the...

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