ORBITS, FORCES AND ACCRETION DYNAMICS NEAR SPINNING BLACK-HOLES

Authors
BARRABES C BOISSEAU B ISRAEL W
Citation
C. Barrabes et al., ORBITS, FORCES AND ACCRETION DYNAMICS NEAR SPINNING BLACK-HOLES, Monthly Notices of the Royal Astronomical Society, 276(2), 1995, pp. 432-438
Citations number
33
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Monthly Notices of the Royal Astronomical Society → ACNP
ISSN journal
00358711
Volume
276
Issue
2
Year of publication
1995
Pages
432 - 438
Database
ISI
SICI code
0035-8711(1995)276:2<432:OFAADN>2.0.ZU;2-Z
Abstract
We analyse the relativistic dynamical properties of Keplerian and non- Keplerian circular orbits in a general axisymmetric and stationary gra vitational field, and discuss the implications for the stability of co - and counter-rotating accretion discs and tori surrounding a spinning black hole. Close to the horizon there are orbital peculiarities whic h can seem counterintuitive, but are elucidated by formulating the dyn amics in terms of the orbital velocity actually measured by a local, z ero-angular-momentum observer.