Appearance of innermost stable circular orbits of accretion discs around rotating neutron stars

  title={Appearance of innermost stable circular orbits of accretion discs around rotating neutron stars},
  author={Gabriel Torok and Martin Urbanec and Karel Ad{\'a}mek and Gabriela Urbancov'a},
  journal={Astronomy and Astrophysics},
The innermost stable cicular orbit (ISCO) of an accretion disc orbiting a neutron star (NS) is often assumed a unique prediction of general relativity. However, it has been argued that ISCO also appears around highly elliptic bodies described by Newtonian theory. In this sense, the behaviour of an ISCO around a rotating oblate neutron star is formed by the interplay between relativis tic and Newtonian effects. Here we briefly explore the consequences of this interp lay using a straightforward… 

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