Quasi-Periodic Flares from Star-Accretion Disc Collisions

Details Quasi-Periodic Flares from Star-Accretion Disc Collisions Quasi-Periodic Flares from Star-Accretion Disc Collisions

2009-06-04

arxiv.org/abs/0906.0800v2

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

16 pages, 11 figures, submitted to MNRAS; corrected typos

Scientific paper

We present simulated results of quasi-periodic flares generated by the inelastic collisions of a star bound to a super-massive black hole (SMBH) and its attendant accretion disc. We show that the behavior of the quasi-periodicity is affected by the mass and spin of the black hole and the orbital elements of the stellar orbit. We also evaluate the possibility of extracting useful information on these parameters and verifying the character of the Kerr metric from such quasi-periodic signals. Comparisons are made with the observed optical outbursts of OJ287, infrared flares from the Galactic center and X-ray variability in RE J1034+396.

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