How to Detect Inclined Water Maser Disks (and Possibly Measure Black Hole Masses)

@article{Darling2017HowTD,
  title={How to Detect Inclined Water Maser Disks (and Possibly Measure Black Hole Masses)},
  author={Jeremy Darling},
  journal={The Astrophysical Journal},
  year={2017},
  volume={837}
}
  • J. Darling
  • Published 21 February 2017
  • Physics
  • The Astrophysical Journal
We describe a method for identifying inclined water maser disks orbiting massive black holes and for potentially using them to measure black hole masses. Owing to the geometry of maser amplification pathways, the minority of water maser disks are observable: only those viewed nearly edge-on have been identified, suggesting that an order of magnitude additional maser disks exist. We suggest that inward-propagating masers are gravitationally deflected by the central black hole, thereby scattering… 

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