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• W2912734598 abstract "We recently showed that postulated ultracompact minihalos with a steep density profile do not form in realistic simulations with enhanced initial perturbations. In this paper we assume that a small fraction of the dark matter consists of primordial black holes (PBHs) and simulate the formation of structures around them. We find that in this scenario halos with steep density profiles do form, consistent with theoretical predictions. If the rest of the dark matter consists of weakly interacting massive particles (WIMPs), we also show that WIMPs in the dense innermost part of halos surrounding the PBH would annihilate and produce a detectable gamma-ray signal. The nondetection of this signal implies that PBHs make up at most one billionth of the dark matter, provided that their mass is greater than one millionth of the mass of the Sun. Similarly, a detection of PBHs would imply that the remaining dark matter could not be WIMPs." @default.
• W2912734598 created "2019-02-21" @default.
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• W2912734598 date "2019-07-09" @default.
• W2912734598 modified "2023-10-01" @default.
• W2912734598 title "WIMPs and stellar-mass primordial black holes are incompatible" @default.
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• W2912734598 doi "https://doi.org/10.1103/physrevd.100.023506" @default.
• W2912734598 hasPublicationYear "2019" @default.
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