A steady-state solution for warped accretion discs

2009/05/25 by Lei Chen, L. Chen, Shengmiao Wu +2 · 1 citation
Physics and Astronomy · #Accretion (finance) #Accretion disc #Astrophysical Phenomena and Observations #Astrophysics #Astrophysics and Star Formation Studies #Classical mechanics #Mechanics #Physics #Power law #RADIUS #Stellar, planetary, and galactic studies #Thermodynamics #Viscosity #astro-ph.CO

paper · pdf · doi:10.1111/j.1365-2966.2009.15080.x

6 pages, 5 figures, accepted for publication by MNRAS

arxiv created 2009/05/25 · openalex publication_date 2009/09/02 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We consider a thin accretion disc warped due to the Bardeen–Petterson effect, presenting both analytical and numerical solutions for the situation in which the two viscosity coefficients vary with radius as a 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 the previous one, which overestimated the inclination change in the outer disc. Our new analytical solution is appropriate for moderately warped discs, while for extremely misaligned discs only a numerical solution is appropriate.

Citations

• The Discovery of H 2 O Maser Emission in Seven Active Galactic Nuclei and at High Velocities in the Circinus Galaxy
• The warped disc of NGC 4258
• Symmetry in the Changing Jets of SS 433 and Its True Distance from Us
• Broad reprocessed Balmer emission from warped accretion discs
• Magnetically Driven Warping, Precession, and Resonances in Accretion Disks
• Radiation‐driven Warping. II. Nonisothermal Disks
• Warping of Accretion Disks with Magnetically Driven Outflows: A Possible Origin for Jet Precession

Cited by

• Reprocessed emission from warped accretion discs induced by the Bardeen-Petterson effect