Relativistic Standard Accretion Disc
In this chapter we present a model of a standard accretion disc around a rotating black hole taking general relativity effects into full account. This model was first described in the paper by Novikov and Thorne (Black holes (Les Astres Occlus). Gordon and Breach, New York, 1973) and has since then been used in many studies to obtain convincing evidence of the existence of black holes, in both stellar binary systems and active galactic nuclei. It remains topical since a full account of the general relativistic properties of the motion of matter in the disc, and the generation of disc emission, allows the position of the inner disc radius and hence the black hole spin to be inferred from observations. In addition, the standard accretion disc is the basis for more complicated theories of warped (twisted) accretion discs, which are formed when the accreting matter moves outside the equatorial plane of a rotating black hole.
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