Dynamics of warped discs

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• Chris Nixon (Leicester)
• Friday 08 June 2018, 11:30-12:30
• Kavli Large Meeting Room, Kavli Building.

If you have a question about this talk, please contact Martin Haehnelt.

Astrophysical discs are often warped, that is, their orbital planes change with radius. Discs can be warped by e.g. Lense-Thirring precession induced by a misaligned spinning black hole, or the gravitational pull of a misaligned companion. I will discuss the dynamics of warped discs, provide my thoughts on the role of `viscosity’ in their evolution, and present simulations of tilt oscillations, Kozai-Lidov oscillations and disc tearing. Finally I will present the results of a stability analysis of the warped disc equations to derive the criteria for the warp to be unstable and the disc to separate into distinct planes.

This talk is part of the Galaxies Discussion Group series.

This talk is included in these lists:

• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
• Cosmology, Astrophysics and General Relativity
• Galaxies Discussion Group
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
• Kavli Large Meeting Room, Kavli Building

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