Can gas dynamics in centres of galaxies reveal orbiting massive black holes

@article{Etherington2006CanGD,
  title={Can gas dynamics in centres of galaxies reveal orbiting massive black holes},
  author={James Etherington and Witold Maciejewski},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2006},
  volume={367},
  pages={1003-1010}
}
If supermassive black holes in centres of galaxies form by merging of black hole remnants of massive Population III stars, then there should be a few black holes of mass one or two orders of magnitude smaller than that of the central ones, orbiting around the centre of a typical galaxy. These black holes constitute a weak perturbation in the gravitational potential, which can generate wave phenomena in gas within a disc close to the centre of the galaxy. Here, we show that a single orbiting… 

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