Shapes and Positions of Black Hole Shadows in Accretion Disks and Spin Parameters of Black Holes

@article{Takahashi2004ShapesAP,
  title={Shapes and Positions of Black Hole Shadows in Accretion Disks and Spin Parameters of Black Holes},
  author={Rohta Takahashi},
  journal={The Astrophysical Journal},
  year={2004},
  volume={611},
  pages={996-1004}
}
  • R. Takahashi
  • Published 6 May 2004
  • Physics
  • The Astrophysical Journal
Can we determine the spin parameter of a black hole by observing the black hole's shadow on an accretion disk? To answer this question, we make qualitative and quantitative analyses of the shape and position of the shadow cast by a rotating black hole on an optically thick accretion disk and its dependence on the angular momentum of the black hole. We consider two types of inner edges of accretion disks, an event horizon and a marginally stable orbit. We have found black hole shadows of quite… 

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