Intermediate-Mass Black Holes

@article{Greene2019IntermediateMassBH,
  title={Intermediate-Mass Black Holes},
  author={Jenny E. Greene and Jay Strader and Luis C. Ho},
  journal={arXiv: Astrophysics of Galaxies},
  year={2019}
}
We describe ongoing searches for intermediate-mass black holes with M_BH ~ 100-10^5 M_sun. We review a range of search mechanisms, both dynamical and those that rely on accretion signatures. We find that dynamical and accretion signatures alike point to a high fraction of 10^9-10^10 M_sun galaxies hosting black holes with M_BH<10^5 M_sun. In contrast, there are no solid detections of black holes in globular clusters. There are few observational constraints on black holes in any environment with… 
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    Proceedings of the International Astronomical Union
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References

SHOWING 1-10 OF 23 REFERENCES
Astro2020 Science White Paper: The Local Relics of of Supermassive Black Hole Seeds
We have compelling evidence for stellar-mass black holes (BHs) of ~5-80 M_sun that form through the death of massive stars. We also have compelling evidence for so-called supermassive BHs (10^5-10^10
An Arena for Multi-Messenger Astrophysics: Inspiral and Tidal Disruption of White Dwarfs by Massive Black Holes
The tidal disruption of stars by (super-)massive black holes in galactic nuclei has been discussed in theoretical terms for about 30 years but only in the past decade have we been able to detect such
Electromagnetic Window into the Dawn of Black Holes
Massive 10^6-10^10 Msun black holes (BHs) are ubiquitous in local galactic nuclei. They were common by the time the Universe is several Gyr old, and many of them were in place within the first 1~Gyr
The unique potential of extreme mass-ratio inspirals for gravitational-wave astronomy
The inspiral of a stellar-mass compact object into a massive ($\sim 10^{4}$-$10^{7} M_{\odot}$) black hole produces an intricate gravitational-wave signal. Due to the extreme-mass ratios involved,
Research Update on Extreme-Mass-Ratio Inspirals
The inspirals of stellar-mass mass compact objects into massive black holes in the centres of galaxies are one of the most important sources of gravitational radiation for space- based detectors like
A next-generation Very Large Array
  • E. Murphy
  • Physics, Computer Science
    Proceedings of the International Astronomical Union
  • 2017
TLDR
The ngVLA will tackle a broad range of outstanding questions in modern astronomy by simultaneously delivering the capability to unveil the formation of Solar System analogues, probe the initial conditions for planetary systems and life with astrochemistry, and characterize the assembly, structure, and evolution of galaxies from the first billion years to the present.
Stellar mass derived using Bell et al
  • K−band magnitude
  • 2018
Distance (Mpc). Column (3): Black hole mass determination method. Column (4): Black hole mass
  • Star cluster mass,
  • 2015
2019), based on depth, we can expect ∼ 10 events per year
  • 2019
2019), based on depth, we can expect ∼ 10 events per year
  • 2019
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