Limits on the Mass and Abundance of Primordial Black Holes from Quasar Gravitational Microlensing

@article{Mediavilla2017LimitsOT,
  title={Limits on the Mass and Abundance of Primordial Black Holes from Quasar Gravitational Microlensing},
  author={Evencio Mediavilla and J. Jim'enez-Vicente and Jose A. Mu{\~n}oz and H{\'e}ctor Vives-Arias and Jos'e Calder'on-Infante},
  journal={The Astrophysical Journal Letters},
  year={2017},
  volume={836}
}
The idea that dark matter can be made of intermediate-mass primordial black holes (PBHs) in the 10 M⊙ ≲ M ≲ 200 M⊙ range has recently been reconsidered, particularly in the light of the detection of gravitational waves by the LIGO experiment. The existence of even a small fraction of dark matter in black holes should nevertheless result in noticeable quasar gravitational microlensing. Quasar microlensing is sensitive to any type of compact objects in the lens galaxy, to their abundance, and to… 

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References

SHOWING 1-10 OF 38 REFERENCES

Observational Limits on Omega in Stars, Brown Dwarfs, and Stellar Remnants from Gravitational Microlensing

Microlensing by compact objects with masses between approximately 0.001 solar masses and approximately 300 solar masses will amplify the continuum emission of a quasar, without significantly changing

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

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

CONSTRAINTS ON MACHO DARK MATTER FROM COMPACT STELLAR SYSTEMS IN ULTRA-FAINT DWARF GALAXIES

I show that a recently discovered star cluster near the center of the ultra-faint dwarf galaxy Eridanus II provides strong constraints on massive compact halo objects (MACHOs) of ≳5 M⊙ as the main

Probing the dark matter radial profile in lens galaxies and the size of X-ray emitting region in quasars with microlensing

We use X-ray and optical microlensing measurements to study the shape of the dark matter density profile in the lens galaxies and the size of the (soft) X-ray emission region. We show that single

A new direction for dark matter research: intermediate-mass compact halo objects

The failure to find evidence for elementary particles that could serve as the constituents of dark matter brings to mind suggestions that dark matter might consist of massive compact objects

THE QUASAR ACCRETION DISK SIZE–BLACK HOLE MASS RELATION

We use the microlensing variability observed for 11 gravitationally lensed quasars to show that the accretion disk size at a rest-frame wavelength of 2500 Å is related to the black hole mass by

DARK MATTER MASS FRACTION IN LENS GALAXIES: NEW ESTIMATES FROM MICROLENSING

We present a joint estimate of the stellar/dark matter mass fraction in lens galaxies and the average size of the accretion disk of lensed quasars based on microlensing measurements of 27 quasar

Microlensing-based Estimate of the Mass Fraction in Compact Objects in Lens Galaxies

We estimate the fraction of mass that is composed of compact objects in gravitational lens galaxies. This study is based on microlensing measurements (obtained from the literature) of a sample of 29

THE MICROLENSING PROPERTIES OF A SAMPLE OF 87 LENSED QUASARS

Gravitational microlensing is a powerful tool for probing the physical properties of quasar accretion disks and properties of the lens galaxy such as its dark matter fraction and mean stellar mass.

Did LIGO Detect Dark Matter?

TLDR
It is considered that the black-hole (BH) binary detected by LIGO may be a signature of dark matter, and reasonable estimates span a range that overlaps the 2-53  Gpc^{-3} yr^{-1} rate estimated from GW150914, thus raising the possibility that LigO has detected PBH dark matter.