Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...324..829d&link_type=abstract
Astronomy and Astrophysics, v.324, p.829-834
Astronomy and Astrophysics
Astrophysics
16
Accretion, Accretion Discs
Scientific paper
We derive the system of equations describing the time dependent twisted accretion disc around a Kerr black hole (twist equations). The post-Newtonian corrections to the equations of motion and effects of the gravitomagnetic force are taken into account. We show that introduction of appropriate coordinate system greatly simplifies the derivation of equations and allows to consider sufficiently large but smoothly changing with distance and time inclination angles. The twist equations obtained by different authors in previous works are limiting cases of our general system.
Demiański Marek
Ivanov Pavel B.
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