Effects of magnetic field on the runaway instability of relativistic accretion tori near a rotating black hole. Issue Volume 9:Issue S303(2013) (22nd May 2014)

• Record Type: Journal Article
• Authors: Karas, V.; Hamerský, J.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 9:Issue S303(2013)
• Page Start: 424
• Page End: 426
• Publication Date: 2014-05-22
• Subjects: Accretion, -- accretion disks – gravitation – black hole physics; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921314001057
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: Runaway instability operates in accretion tori around black holes, where it affects systems close to the critical (cusp overflowing) configuration. The runaway effect depends on the radial profile l ( R ) of the angular momentum distribution of the fluid, on the dimension-less spin a of the central black hole (| a | ≤ 1), and other factors, such as self-gravity. Here we discuss the role of runaway instability within a framework of an axially symmetric model of perfect fluid endowed with a purely toroidal magnetic field.