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

By A. Green. 2016

141 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7f9402e6ff46967539112ccd46732470ccbd523b

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Florian Kuhnel
2. B. Carr
3. V. Vaskonen
4. J. Silk
5. H. Veermae
6. M. Raidal
7. Gert Hütsi
8. C. Hirata

In Nuclear and High Energy Physics

1. Florian Kuhnel
2. B. Carr
3. J. Silk
4. H. Veermae
5. M. Raidal
6. Gert Hütsi
7. C. Hirata
8. P. Salucci

Citations in the corpus

• Primordial Black Holes as Dark Matter: Recent Developments (2020, background): “[33] Anne Green, “Microlensing and dynamical constraints on primordial black hole dark matter with an extended mass function,” Phys.”
• Revisiting constraints on asteroid-mass primordial black holes as dark matter candidates (2019, background): “Note that all these constraints have been made assuming monochromatic mass functions, although considering extended mass functions do not relax those constraints [68–71].”
• Primordial black holes as generators of cosmic structures (2018, background): “It has been demonstrated both numerically (Green 2016) and analytically (Kannike et al. 2017) for the case in which the slow-roll approximation holds.”
• Two populations of LIGO-Virgo black holes (2020, background): “[70, 71]) if the critical scaling relationship [72–74] is not accounted for in the gravitational collapse.”
• The distribution of dark matter in galaxies (2018, background): “In this case, the detection of primordial black hole binaries could provide an unambiguous observational window to pin down the nature of dark matter (Green 2016).”
• Primordial black holes as dark matter candidates (2021, background): “On the other hand, even if PBHs can provide all the dark matter at some mass scale, the extended mass function may still violate the constraints at some other scale [43].”