Local stability of galactic discs in modified dynamics

@article{Shenavar2018LocalSO,
  title={Local stability of galactic discs in modified dynamics},
  author={Hossein Shenavar and Neda Ghafourian},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2018},
  volume={475},
  pages={5603-5617}
}
The local stability of stellar and fluid discs, under a new modified dynamical model, is surveyed by using WKB approximation. The exact form of the modified Toomre criterion is derived for both types of systems and it is shown that the new model is, in all situations, more locally stable than Newtonian model. In addition, it has been proved that the central surface density of the galaxies plays an important role in the local stability in the sense that LSB galaxies are more stable than HSBs… 

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