Bondi/Hoyle and Shakura/Sunyaev - Max-Planck-Institut für ...

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Models of accretion Model Assumptions Zel’dovich/Novikov Newtonian mechanics, collisionless gas (Vlasov equation) spherical symmetry Bondi/Hoyle Newtonian mechanics, adiabatic fluid (HD), spherical symmetry Shakura/Sunyaev Newtonian mechanics, viscous fluid (HD), simple radiative transfer, axisymmetry, disk geometry Michel GR mechanics, adiabatic fluid (HD), spherical symmetry Other Newtonian and GR models of accretion disks 7
2. Spherical accretion 8
Page 1 and 2: Accretion: Bondi/Hoyle and Shakura/
Page 3 and 4: Literature • This talk is based o
Page 5 and 6: Accretion onto compact objects •
Page 7: Models of accretion • Analytical
Page 11 and 12: Flow description • 1D radial flow
Page 13 and 14: • u(r) at small radii: free-fall
Page 15 and 16: 3. Disk accretion 14
Page 17 and 18: Disk accretion: General features
Page 19 and 20: Sketch of a thin accretion disk 18
Page 21 and 22: Angular momentum conservation • M
Page 23 and 24: Vertical momentum conservation •
Page 25 and 26: Viscosity law • Several physical
Page 27 and 28: Radiative transport • Transport f
Page 29 and 30: Structure of the solution • The s
Page 31 and 32: 4. General relativistic torus accre
Page 33 and 34: The torus (thick disk) model • As
Page 35: Summary • Accretion is inflow of

Bondi/Hoyle and Shakura/Sunyaev - Max-Planck-Institut für ...

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