A New Parameter in Accretion Disk Model

  title={A New Parameter in Accretion Disk Model},
  author={Fenge Yuan},
  journal={arXiv: Astrophysics},
  • F. Yuan
  • Published 3 February 2000
  • Physics
  • arXiv: Astrophysics
Taking optically thin accretion flows as example, we calculate the dynamics and the emergent spectra of accretion flows with different outer boundary conditions (OBCs) and find that OBC plays an important role in accretion disk model. This is because the accretion equations describing the behavior of accretion flows are a set of differential equations, therefore, accretion is intrinsically an initial-value problem. We argue that optically thick accretion flow should also show OBC-dependent… 


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