PhysRevD.100.023506.pdf (548.83 kB)
WIMPs and stellar-mass primordial black holes are incompatible
Version 2 2023-06-12, 09:09
Version 1 2023-06-09, 18:17
journal contribution
posted on 2023-06-12, 09:09 authored by Julian Adamek, Christian ByrnesChristian Byrnes, Mateja Gosenca, Shaun HotchkissWe recently showed that postulated ultracompact minihalos with a steep density pro?le 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 ?nd that in this scenario halos with steep density pro?les 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 non-detection 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.
Funding
University of Sussex Astronomy Consolidated Grant 2017-2020; G2050; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/P000525/1
History
Publication status
- Published
File Version
- Published version
Journal
Journal of High Energy PhysicsISSN
2470-0010Publisher
American Physical SocietyExternal DOI
Issue
2Volume
100Page range
1-11Article number
a023506Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Astronomy Centre Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2019-07-02First Open Access (FOA) Date
2019-07-24First Compliant Deposit (FCD) Date
2019-07-01Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC