A star orbiting around a supermassive rotating black hole: free motion and corrections due to star-disc collisions | Zendy

David Vokrouhlický | Zendy; V. Karas | Zendy

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A star orbiting around a supermassive rotating black hole: free motion and corrections due to star-disc collisions

Author(s) -

David Vokrouhlický,

V. Karas

Publication year - 1993

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/265.2.365

Subject(s) - physics , supermassive black hole , astrophysics , precession , apsidal precession , angular momentum , geodesic , black hole (networking) , accretion (finance) , general relativity , orbital eccentricity , classical mechanics , astronomy , kerr metric , gravitational field , schwarzschild radius , stars , galaxy , geometry , planet , computer network , routing protocol , routing (electronic design automation) , computer science , link state routing protocol , mathematics

Our aim is to study the evolution of the orbit of a star under the influence of interactions with an accretion disc in an AGN. The model considered consists of a low-mass compact object orbiting a supermassive black hole and colliding periodically with the accretion disc. Approximate calculations based mostly on the Newtonian theory of gravity have been carried out by several authors, to estimate the effects of circularization of initially eccentric orbits and their dragging into the disc plane. Here, we present the first step towards a more adequate general relativistic approach in which the gravitational field of the nucleus is described by the Kerr metric

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