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

2016/09/28 by Anne M. Green · 3 citations
Physics and Astronomy · #Astrophysics #Binary black hole #Black Holes and Theoretical Physics #Black hole (networking) #Cosmology and Gravitation Theories #Dark matter #Function (biology) #Galaxy #Gravitational microlensing #Gravitational wave #Particle physics #Physics #Primordial black hole #Pulsars and Gravitational Waves Research #Range (aeronautics) #astro-ph.CO #astro-ph.GA

paper · pdf · doi:10.1103/physrevd.94.063530

published as Phys. Rev. D 94, 063530 (2016) · 6 pages, 4 figures, v2: version published in Phys. Rev. D with additional references

openalex publication_date 2016/09/28 · arxiv created 2016/09/29 · arxiv updated 2016/10/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The recent discovery of gravitational waves from mergers of \ensuremath∼10 M_\ensuremath\bigodot 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^\ensuremath-7\ensuremath\lesssimM/M_\ensuremath\bigodot\ensuremath\lesssim10⁵. 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.

Citations

• Beasts of the Southern Wild: Discovery of nine Ultra Faint satellites in the vicinity of the Magellanic Clouds
• Near-Critical Gravitational Collapse and the Initial Mass Function of Primordial Black Holes
• Limits on the Macho content of the Galactic Halo from the EROS-2 Survey of the Magellanic Clouds
• The observed properties of dwarf galaxies in and around the Local Group
• The Kinematics of the Ultra‐faint Milky Way Satellites: Solving the Missing Satellite Problem
• Observation of Gravitational Waves from a Binary Black Hole Merger
• Did LIGO detect dark matter?

Cited by

• Constraining primordial black hole masses with the isotropic gamma ray background
• The Automatic Learning for the Rapid Classification of Events (ALeRCE) Alert Broker
• Primordial black holes as generators of cosmic structures