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Microlensing and dynamical constraints on primordial black hole dark matter with an extended mass function

Green, Anne M.

Authors

ANNE GREEN anne.green@nottingham.ac.uk
Professor of Physics



Abstract

The recent discovery of gravitational waves from mergers of ∼10 M⊙ black hole binaries has stimulated interested in primordial black hole (PBH) dark matter in this mass range. Microlensing and dynamical constraints exclude all of the dark matter in compact objects with a delta function mass function in the range 10−7 ≲ M=M⊙ ≲ 105. However it has been argued that all of the dark matter could be composed of compact objects in this range with an extended mass function. We explicitly recalculate the microlensing and dynamical constraints for compact objects with an extended mass function which replicates the PBH mass function produced by inflation models. We find that the microlensing and dynamical constraints place conflicting constraints on the width of the mass function, and do not find a mass function which satisfies both constraints.

Citation

Green, A. M. (in press). Microlensing and dynamical constraints on primordial black hole dark matter with an extended mass function. Physical Review D - Particles, Fields, Gravitation and Cosmology, 94, Article 063530. https://doi.org/10.1103/PhysRevD.94.063530

Journal Article Type Article
Acceptance Date Sep 14, 2016
Online Publication Date Sep 28, 2016
Deposit Date Oct 3, 2016
Publicly Available Date Oct 3, 2016
Journal Physical Review D
Print ISSN 1550-7998
Electronic ISSN 1550-2368
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 94
Article Number 063530
DOI https://doi.org/10.1103/PhysRevD.94.063530
Public URL https://nottingham-repository.worktribe.com/output/809029
Publisher URL http://journals.aps.org/prd/abstract/10.1103/PhysRevD.94.063530

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