Tidal interaction and brightening of accretion disks around supermassive black holes

Details Tidal interaction and brightening of accretion disks around supermassive black holes Tidal interaction and brightening of accretion disks around supermassive black holes

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aipc..254..239k&link_type=abstract

Testing the AGN paradigm. AIP Conference Proceedings, Volume 254, pp. 239-241 (1992).

Physics

1

Black Holes, Relativity And Gravitation

Scientific paper

We study the tidal interaction between a supermassive black hole and a star. The brightening of an accretion disk around a supermassive black hole as a consequence of the tidal disruption of the star is investigated with the Newtonian α-disk model, although relativistic effects are expected to be substantial. A large mass, 108-109 Msolar, for the supermassive black hole is required to produce possible optical flares on time scales of a few years. The numerical results imply that only a few percent of the mass of a disrupted star forms a very thin layer of accretion disk outside the marginally stable orbit. We suggest that the formation of such a thin disk could be interesting for producing potentially observable optical thermal flares with characteristic time scales on the order of a few years.

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