Steady state solution of warped accretion discs

Abstract

We consider a thin accretion disc warped due to the Bardeen-Petterson effect, presenting both analytical and numerical solutions for the situation that the two viscosity coefficients vary with radius as power law, with the two power law indices not necessarily equal. The analytical solutions are compared with numerical ones, showing that our new analytical solution is more accurate than previous one, which overestimates the inclination changing in the outer disc. Our new analytical solution is appropriate for moderately warped discs, while for extremely misaligned disc, only numerical solution is appropriate.

6 pages, 5 figures, accepted for publication by MNRAS

References in corpus (4)

• The evolution of misaligned accretion discs and spinning black holes
• Alignment and Precession of a Black Hole with a Warped Accretion Disc
• The Warped Disc of NGC 4258
• Broad reprocessed Balmer emission from warped accretion discs

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• Alignments Of Black Holes With Their Warped Accretion Disks And Episodic Lifetimes Of Active Galactic Nuclei
• Reprocessed emission from warped accretion discs induced by the Bardeen-Petterson effect
• Evolution of Warped Accretion Disks in Active Galactic Nuclei. I. Roles of Feeding at the Outer Boundaries
• Parsec-scale jet precession and a putative supermassive binary black hole system in the blazar AO 0235+164