Kerr-like behavior of orbits around rotating Newtonian stars

@article{Kluniak2014KerrlikeBO,
  title={Kerr-like behavior of orbits around rotating Newtonian stars},
  author={W. Kluźniak and Dorota Rosińska},
  journal={Journal of Physics: Conference Series},
  year={2014},
  volume={496},
  pages={012016}
}
The innermost stable circular orbit and the splitting of epicyclic and orbital frequencies are among strong-field signatures of general relativity searched for in astronomical objects, particularly in the X-ray data accumulated in observations of neutron stars and black holes. It may come as a surprise that these effects are present in the Newtonian physics of rapidly rotating gravitating bodies, such as the classic Maclaurin spheroids. 
Innermost Stable Circular Orbits Around Rotating Compact Stars
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